4.3 Review

Catalytic oxidation degradation of volatile organic compounds (VOCs) - a review

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Article Energy & Fuels

Synergistic double doping of Co and Cu constructs multiple active sites to achieve catalyzed degradation of toluene at high humidity

Min Xu et al.

Summary: Developing high water resistance, efficient, and stable, functional catalysts is crucial for reducing and controlling volatile organic compounds (VOCs). This study designed CoCu-CeO2 trimetallic oxide catalysts to investigate their catalytic performance in a water-toluene complex system. The introduction of Cu species enhanced the redox performance, while Co species promoted the migration and conversion of Cu species, resulting in enhanced mineralization of toluene. The construction of this catalyst system provides scientific guidance for efficiently removing VOCs in complex multi-media environments.
Article Chemistry, Physical

Engineering Morphology and Ni Substitution of NiXCo3-XO4 Spinel Oxides to Promote Catalytic Combustion of Ethane: Elucidating the Influence of Oxygen Defects

Shida Liu et al.

Summary: Transition metal oxides, particularly Co-based spinel oxides, have potential as alternatives to noble metal catalysts in oxidation reactions. In this study, NixCo3-xO4 catalysts were synthesized to investigate the influence of oxygen vacancies on catalyst activities and reaction mechanisms in ethane combustion. The activity was found to be correlated with the population and properties of O defects, with a higher number of defects resulting in increased activity. The shape-induced facet effect was also related to the amount of Ni incorporated into the octahedral sites of Co oxide. The findings from this study contribute to a better understanding of facet-dependent catalytic behavior and the design of high-performance catalysts.

ACS CATALYSIS (2023)

Article Chemistry, Physical

Enhanced Catalytic Performance of La-Doped CoMn2O4 Catalysts by Regulating Oxygen Species Activity for VOCs Oxidation

Yewei Ren et al.

Summary: Modulating the activity of oxygen species in transition metal oxide catalysts is crucial for environmental catalytic oxidation reactions. In this work, the mobility of lattice oxygen and activation ability of gas oxygen over CoMn2O4 were effectively regulated by in situ solvothermal-induced lanthanum doping, leading to enhanced VOCs oxidation activity. The introduction of lanthanum species into the spinel lattice significantly increased the oxygen vacancies and weakened the metal-oxygen bond strength, resulting in higher mobility and reactivity of lattice oxygen and improved conversion of toluene to CO2 and H2O.

ACS CATALYSIS (2023)

Article Engineering, Environmental

Generation of abundant oxygen vacancies in Fe doped 6-MnO2 by a facile interfacial synthesis strategy for highly efficient catalysis of VOCs oxidation

Shuo Yang et al.

Summary: A series of homogenous Fe-Mn oxides with superior catalytic oxidation activity were developed for eliminating VOCs from industrial waste gas using the interfacial redox-precipitation method. Among them, Fe1Mn5 oxide exhibited the best catalytic performance for toluene oxidation with excellent stability and water resistance. The results showed that Fe doping and interfacial redox-precipitation method led to a high concentration of oxygen vacancy defects on Fe1Mn5 oxide, improving lattice oxygen mobility and oxygen species activity, thereby enhancing low temperature reducibility. In addition, in situ DRIFTS analysis revealed that both adsorbed oxygen species and lattice oxygen with improved mobility could interact with adsorbed toluene, facilitating rapid dehydrogenation and demethylation reactions and promoting the breakage of C--C bond in the aromatic ring.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Chemistry, Physical

Self-assembly TiO2-RGO/LDHs nanocomposite: Photocatalysis of VOCs degradation in simulation air

Xue Gao et al.

Summary: The TiO2-RGO/LDHs photocatalyst was synthesized using a hydrothermal method and its application in degrading volatile organic pollutants was studied. The results showed that the photocatalyst had good degradation activity, with graphene and LDHs playing important roles.

APPLIED SURFACE SCIENCE (2022)

Article Engineering, Environmental

Synergistic mechanism of Cu-Mn-Ce oxides in mesoporous ceramic base catalyst for VOCs microwave catalytic combustion

Shuoyi Feng et al.

Summary: Cu-Mn-Ce mesoporous catalysts showed high efficiency in degrading volatile organic compounds (VOCs) under microwave catalytic combustion, achieving almost 100% removal efficiency. The excellent performance and stability of the catalyst can be attributed to the synergistic effects of the dispersed catalyst on the mesoporous carrier, which increases defects and enhances catalytic activity.

CHEMICAL ENGINEERING JOURNAL (2022)

Review Chemistry, Multidisciplinary

Noble Metal Single-Atom Catalysts for the Catalytic Oxidation of Volatile Organic Compounds

Lina Zhang et al.

Summary: This article reviews recent advances in the use of metal single-atom catalysts for the oxidation of VOCs, focusing on their structures, reaction mechanisms, and potential applications.

CHEMSUSCHEM (2022)

Article Engineering, Environmental

Boosting Toluene Combustion by Tuning Electronic Metal-Support Interactions in In Situ Grown Pt@Co3O4 Catalysts

Menglan Xiao et al.

Summary: The study focused on the electronic metal-support interaction to enhance the catalytic performance of Pt@Co3O4 catalysts in toluene degradation. The catalyst showed excellent activity, water resistance, and long-term stability. Surface oxygen species played a crucial role in toluene degradation and could efficiently be replenished by gaseous oxygen.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Energy & Fuels

Low platinum alloy catalyst PtCo3 obtaining high catalytic activity and stability with great water and CO2 resistance for catalytic oxidation of toluene

Jianwu Zou et al.

Summary: PtCo3 nanoparticles were synthesized by the organic phase reduction method, and PtCo3-C samples were obtained by physically loading them on carbon black. PtCo3-C exhibited excellent low temperature catalytic activity and thermal stability in toluene oxidation, as well as great water and CO2 resistance. The adsorption energy of toluene on PtCo3-C was much higher than that of water and CO2, and a catalytic mechanism for toluene oxidation over PtCo3-C was proposed.
Article Engineering, Chemical

Outstanding Stability and Enhanced Catalytic Activity for Toluene Oxidation by Si-O-Mn Interaction over MnOx/SiO2

Baojiang Zhang et al.

Summary: A porous silica supported amorphous MnOx catalyst with excellent stability and high activity for catalytic combustion of volatile organic compounds (VOCs) has been successfully constructed. The Si-O-Mn hybridization was found to enhance the activity by promoting the spillover of active oxygen species.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2022)

Article Chemistry, Applied

Effect of different supports on activity of Mn-Ce binary oxides catalysts for toluene combustion

Lei Li et al.

Summary: The effects of different support materials on the catalytic performance of toluene removal were investigated. The Mn-Ce binary oxides supported on ZrO2 showed the best catalytic activity, attributed to low-temperature reducibility and abundant surface species. XPS and TPR results revealed good interaction between Mn and Ce elements in MnCe/ZrO2, and weak interaction between metal oxide and support promoted the dispersion and reduction of MnCe oxides at low temperature.

JOURNAL OF RARE EARTHS (2022)

Article Chemistry, Physical

Dendritic mesoporous silica nanosphere supported highly dispersed Pd-CoOx catalysts for catalytic oxidation of toluene

Qinglong Liu et al.

Summary: Catalytic oxidation of toluene-bearing VOCs can be effectively achieved using Co-grafted dendritic mesoporous silica nanospheres. The catalysts exhibit superior micro-structure, high dispersion of CoOx species, and proper metal-support interaction. The presence of moisture negatively affects the catalytic activity but this effect is reversible. Introducing Pd into the catalysts significantly enhances the catalytic performance by influencing the oxygen activation and toluene adsorption synergistic effect.

MOLECULAR CATALYSIS (2022)

Article Chemistry, Physical

Simple Thermocatalytic Oxidation Degradation of VOCs

Xuelian Li et al.

Summary: Volatile organic compounds (VOCs) are a class of harmful pollutants with various sources. The application of noble metal catalysts and metal oxide catalysts in thermal catalytic oxidation degradation of VOCs has been reviewed, along with the challenges and prospects for improving VOCs treatment.

CATALYSIS LETTERS (2022)

Article Chemistry, Physical

Rh1Cu3/ZSM-5 as an Efficient Bifunctional Catalyst/Adsorbent for VOCs Abatement

Shuo Yao et al.

Summary: This study focused on VOCs abatement using catalytic combustion/adsorption over Rh-based/ZSM-5, with Rh1Cu3/ZSM-5 showing excellent catalytic activity and adsorption capability for toluene. Interaction between Rh species and Cu oxides improved catalytic performance, while the large specific surface area and strong interaction with VOCs molecules of Rh1Cu3/ZSM-5 enhanced its adsorption ability. Bifunctional materials with dual-metal modification are significant for VOCs abatement development.

CATALYSIS LETTERS (2022)

Article Chemistry, Applied

VOCs catalytic removal over hierarchical porous zeolite NaY supporting Pt or Pd nanoparticles

Rebecca El Khawaja et al.

Summary: The present study investigates the impregnation of palladium or platinum on hierarchical porous zeolite catalysts for the oxidation of volatile organic compounds (VOCs). It was found that platinum-based catalysts exhibited higher conversion rates, and the presence of platinum (II) species allowed for complete degradation of VOCs at lower temperatures.

CATALYSIS TODAY (2022)

Article Engineering, Environmental

Efficient degradation of multiple Cl-VOCs by catalytic ozonation over MnOx catalysts with different supports

Fawei Lin et al.

Summary: This study investigated the catalytic ozonation of different Cl-VOCs over supported MnOx catalysts and found that the catalytic performance and byproducts formation varied among different Cl-VOCs. Among all the Cl-VOCs, Mn/HZSM-5(27) showed better conversion and mineralization rate, and the catalytic co-ozonation of mixed Cl-VOCs exhibited both inhibitive and promotive effects. Competitive adsorption and the difficulty of Cl-VOCs degradation were the determining factors in catalytic co-ozonation, while the presence of H2O had negligible impact. These findings provide valuable references for industrial applications involving multiple Cl-VOCs and water vapor.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Engineering, Environmental

A versatile route to fabricate Metal/UiO-66 (Metal = Pt, Pd, Ru) with high activity and stability for the catalytic oxidation of various volatile organic compounds

Juntian Li et al.

Summary: Metal-organic frameworks (MOFs) supported highly dispersed metal nanoparticles exhibit excellent catalytic performance for the oxidation of volatile organic compounds (VOCs), addressing the limitations of traditional noble metal catalysts.

CHEMICAL ENGINEERING JOURNAL (2022)

Review Engineering, Environmental

Research Progress of a Composite Metal Oxide Catalyst for VOC Degradation

Kai Zhang et al.

Summary: Volatile organic compounds (VOCs) are toxic and damaging to the environment and human body. Catalytic oxidation technology is an effective method for VOC degradation, offering advantages such as high efficiency, low energy consumption, safety, and minimal secondary pollution. This paper introduces the catalytic oxidation technology for VOC degradation and the development of single metal oxide catalysts, focusing on the application and influencing factors of composite metal oxide catalysts for VOC removal.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Chemistry, Physical

Catalytic oxidation of VOCs over 3D@2D Pd/CoMn2O4 nanosheets supported on hollow Al2O3 microspheres

Jiaqin He et al.

Summary: A series of 3D@2D constructed Al2O3@CoMn2O4 microspheres with a hollow hierarchical structure supporting Pd nanoparticles were successfully synthesized. The catalyst exhibited excellent catalytic activity, high stability, water-resistance, and low-cost, making it a promising candidate for VOC combustion. The introduction of hollow Al2O3 and in situ growth of 2D CMO spinel materials in the microspheres resulted in a well-defined core-shell hollow hierarchical structure with larger specific surface area and promoted catalytic activity. The optimum catalyst showed the lowest apparent activation energy for toluene and achieved 100% conversion of toluene, benzene, and ethyl acetate at relatively low temperatures.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

Article Chemistry, Physical

Confining shell-sandwiched Ag clusters in MnO2-CeO2 hollow spheres to boost activity and stability of toluene combustion

Menglan Xiao et al.

Summary: This study reports the construction of shell-sandwiched MnO2-Ag-CeO2 hollow spheres with remarkable sintering resistance and high activity for toluene combustion. The unique hollow structure alters the electronic states of catalysts sites and increases the adsorbed site of reactant molecules. The multi-interfaces facilitate the release of oxygen species and the deep oxidation of intermediates.

NANO RESEARCH (2022)

Article Nanoscience & Nanotechnology

Hydrophobic Modification of ZSM-5-Encapsulated Uniform Pt Nanoparticles for Catalytic Oxidation of Volatile Organic Compounds

Xinbao Zhu et al.

Summary: In this study, Pt nanoparticles encapsulated in ZSM-5 catalysts were prepared using a one-pot synthesis strategy for the oxidation of volatile organic compounds (VOCs). The results showed that the interaction between Pt and zeolite and the dispersion of metal were significantly enhanced after encapsulation, leading to improved catalytic activity and stability.

ACS APPLIED NANO MATERIALS (2022)

Article Chemistry, Applied

Co-assembly of microfibrous-structured Ag@SiO2-Co3O4/Al-fiber catalysts assisted with water-soluble silane coupling agent for catalytic combustion of trace ethylene

Qiaofei Zhang et al.

Summary: In this study, a microfibrous structured Ag@SiO2-Co3O4/Al-fiber catalyst was tailored using a water-soluble silane coupling agent. The catalyst exhibited high activity and stability for catalytic combustion of trace ethylene at high-throughput operation, with a low Ag loading of 0.2 wt%. Ethylene conversion higher than 99% was achieved at 200 degrees C under dry atmosphere, and C2H4 conversion was retained at around 94% within 120 h running, showing no signs of deactivation.

CATALYSIS TODAY (2022)

Article Engineering, Environmental

Low-Temperature Combustion of Toluene over Cu-Doped SmMn2O5 Mullite Catalysts via Creating Highly Active Cu2+-O-Mn4+ Sites

Yongjie Shen et al.

Summary: This study demonstrates the low-temperature combustion of toluene using Cu-doped SmMn2O5 mullite catalysts, which showed enhanced redox and oxygen activation ability. The consumption of intermediate species and CO2 generation were promoted, leading to improved low-temperature combustion. This work provides novel ideas for the development of high-performance catalysts for low-temperature VOC combustion.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Green & Sustainable Science & Technology

New understanding of source profiles: Example of the coating industry

Song Gao et al.

Summary: This study focused on the source profiles of VOCs in the coating industry, identifying many new species of VOCs and finding that butyl acetate had replaced the benzene series as the dominant species. The industry's average ozone formation potential was found to be 2.6 times higher than the measurement results of traditional methods, and the source reactivity increased by an average of 366.7%.

JOURNAL OF CLEANER PRODUCTION (2022)

Article Chemistry, Physical

Assembling core-shell SiO2@NiaCobOx nanotube decorated by hierarchical NiCo-Phyllisilicate ultrathin nanosheets for highly efficient catalytic combustion of VOCs

Fang Dong et al.

Summary: In this study, a core-shell SiO2@NiaCobOx nanotube was designed and synthesized for the efficient conversion of VOCs. The low-temperature catalytic combustion of toluene was achieved through the combined action of MvK and L-H mechanisms. The nanotube also exhibited good thermal stability and water resistance.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Physical

Boosting the deep oxidation of propane over zeolite encapsulated Rh-Mn bimetallic nanoclusters: Elucidating the role of confinement and synergy effects

Wenming Liu et al.

Summary: A novel bimetallic nanocluster catalyst was designed and applied in the deep oxidation of propane. The catalyst exhibited superior activity, stability, high temperature thermal stability, water resistance, and recyclability. The research provides a new approach for designing high-performance catalysts for the removal of volatile organic compounds under harsh reaction conditions.

JOURNAL OF CATALYSIS (2022)

Article Engineering, Environmental

Non-equilibrium plasma enhanced oxygen vacancies of CuO/CeO2 nanorod catalysts for toluene oxidation

Jianyu Yun et al.

Summary: A series of CuO/CeO2 nanorod catalysts for toluene oxidation were prepared with non-equilibrium plasma, which can enhance the synergism between CuO active phase and CeO2 support, increase oxygen vacancies, and improve catalytic activity.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

Article Chemistry, Applied

Three-dimensionally ordered macroporous MnSmOx composite oxides for propane combustion: Modification effect of Sm dopant

Kai Zeng et al.

Summary: In this study, the effects of samarium doping on the 3DOM MnSmOx composite oxides as catalytic materials were systematically investigated, revealing that samarium doping significantly improved the redox ability and surface oxygen mobility of the catalyst, and the 3DOM architecture showed superiority in promoting the surface adsorption and oxidation of propane molecules.

CATALYSIS TODAY (2021)

Review Chemistry, Multidisciplinary

MnO2-Based Materials for Environmental Applications

Ruijie Yang et al.

Summary: Manganese dioxide is a promising semiconductor material for environmental applications, but its purification efficiency has been limited. Recent efforts have focused on improving the purification efficiency through morphology control and structure construction. MnO2-based materials have potential for adsorption and degradation of pollutants, and future research should focus on nanostructures and composite design.

ADVANCED MATERIALS (2021)

Article Chemistry, Physical

The structural evolution of MnOx with calcination temperature and their catalytic performance for propane total oxidation

Ting Cai et al.

Summary: Manganese oxide is an active catalyst widely used in various reactions, with α-MnO2 showing better activity for propane total oxidation compared to 8-MnO2 and Mn2O3. The research provides insights into the structure and application of Mn-based materials in VOCs removal.

APPLIED SURFACE SCIENCE (2021)

Article Environmental Sciences

Polyhedral cobalt oxide supported Pt nanoparticles with enhanced performance for toluene catalytic oxidation

Shuangju Li et al.

Summary: Polyhedral CoOx was synthesized by calcination of Co-based metal-organic framework ZIF-67 and highly dispersed Pt nanoparticles were successfully loaded on CoOx. The catalytic results showed that Pt-nano/CoOx had the best activity and stability, exhibiting superior catalytic oxidation performance of toluene.

CHEMOSPHERE (2021)

Article Engineering, Environmental

The structural differences of perovskite ATiO3 (A = Ca, Sr) dictate the photocatalytic VOCs mineralization efficiency

Wenjia Yang et al.

Summary: This study compares the photocatalytic efficiency of cubic SrTiO3 and tetragonal CaTiO3, finding that cubic SrTiO3 exhibits higher efficiency due to increased formation of reactive oxygen species, enhanced selectivity of intermediates, and accelerated ring-opening and mineralization rate. These results provide new insights into the relationship between intrinsic structure and photocatalytic performance.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Energy & Fuels

Toluene catalytic oxidation over the layered MOx - δ-MnO2 (M = Pt, Ir, Ag) composites originated from the facile self-driving combustion method

Xuxu Zhai et al.

Summary: A series of layered manganese oxides catalysts were successfully prepared by self-driving combustion (SDC) technology using potassium permanganate and citric acid as precursors. Noble metals were employed to modulate the obtained manganese oxide matrix, resulting in new nanocatalysts with improved catalytic performance, with 0.5Pt-SDC-13 exhibiting the highest activity.
Article Engineering, Environmental

Pd-based catalysts promoted by hierarchical porous Al2O3 and ZnO microsphere supports/coatings for ethyl acetate highly active and stable destruction

Mudi Ma et al.

Summary: The hierarchical porous Al2O3 and ZnO microspheres synthesized for Pd loading show excellent performance in VOC purification, particularly in ethyl acetate degradation and binary VOC oxidation, with high activity and stability.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Energy & Fuels

Fabricating M/Al2O3/cordierite (M = Cr, Mn, Fe, Co, Ni and Cu) monolithic catalysts for ethyl acetate efficient oxidation: Unveiling the role of water vapor and reaction mechanism

Mudi Ma et al.

Summary: This study focused on the reduction and control of anthropogenic VOCs, with a particular emphasis on the fabrication of noble-metal-free monolithic catalysts for industrial VOC removal. A Mn-based cordierite monolithic catalyst showed exceptional activity and stability in the catalytic oxidation of ethyl acetate, with the presence of low levels of water vapor promoting EA conversion while higher concentrations inhibited it. This work provides important insights for designing VOC oxidation catalysts under practical conditions.
Article Energy & Fuels

Superior performance of Cu-Ce binary oxides for toluene catalytic oxidation: Cu-Ce synergistic effect and reaction pathways

Binghong Song et al.

Summary: Cu1Ce3 catalyst shows superior toluene oxidation activity with high selectivity and stability, making it promising for practical applications. The catalytic oxidation of toluene over Cu1Ce3 catalyst involves two main pathways through benzyl alcohol and benzoic acid.
Review Chemistry, Organic

Polymeric Heteregeneous Catalysts in the Hydroformylation of Unsaturated Compounds

D. P. Zhuchkov et al.

Summary: This review discusses heterogeneous hydroformylation catalysts, specifically metal complexes fixed in an organic polymer structure. It provides synthesis methods, data on hydroformylation of unsaturated compounds (including asymmetric hydroformylation), and emphasizes the systematization of data on catalysts developed based on porous organic polymers. Due to their porous structure, resistance to organic media, and high concentration of heteroatoms, these materials show promise for developing highly active, selective, and stable heterogeneous catalysts for hydroformylation of unsaturated compounds, especially higher linear olefins.

PETROLEUM CHEMISTRY (2021)

Article Chemistry, Physical

Improved reactivity for toluene oxidation on MnOx/CeO2-ZrO2 catalyst by the synthesis of cubic-tetragonal interfaces

Caixia Zhou et al.

Summary: The CeO2-ZrO2 solid solutions with cubic-tetragonal interfaces were prepared and found to enhance catalytic activity for toluene oxidation. The interfaces promoted the adsorption of toluene and the formation of key intermediates at low temperatures, leading to higher catalytic activity. This promotion role might be related to the morphology, surface area and interface components of Ce-Zr supports.

APPLIED SURFACE SCIENCE (2021)

Article Engineering, Environmental

CeCoOx-MNS catalyst derived from three-dimensional mesh nanosheet Co-based metal-organic frameworks for highly efficient catalytic combustion of VOCs

Fang Dong et al.

Summary: Various three-dimensional Co-based metal organic frameworks (Co-MOFs) are successfully synthesized, including three-dimensional nanocube, mesh nanosheets, and prismatic nanotube Co-MOFs. The CeCoOx-MNS catalyst derived from Co-MOFs-MNS precursor exhibits superior activity for VOCs oxidation, with more Co3+ and Ce3+ species, and abundant surface weak acid sites. In situ DRIFTS results indicate the main reaction intermediates and potential reaction pathway.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Environmental Sciences

Pt-support interaction and nanoparticle size effect in Pt/CeO2-TiO2 catalysts for low temperature VOCs removal

Yijun Shi et al.

Summary: The size of Pt nanoparticles in Pt/CeO2-TiO2 catalysts affects their degradation activity towards benzene and 1,2-dichloroethane (DCE), with smaller Pt particle sizes enhancing the metal-support interaction and redox properties for deep oxidation at low temperature. Additionally, Pt/CeO2-TiO2 catalysts with larger Pt nanoparticles exhibit more acidic sites, contributing to the conversion of DCE to C2H3Cl. Furthermore, Pt/CeO2-TiO2 catalysts show high stability in DCE degradation reactions and are minimally affected by the presence of benzene and water in the feed gases.

CHEMOSPHERE (2021)

Article Engineering, Environmental

Double redox process to synthesize CuO-CeO2 catalysts with strong Cu-Ce interaction for efficient toluene oxidation

Yiqing Zeng et al.

Summary: A novel double redox method was developed to synthesize highly active CuO-CeO2 (CuCe-DR) catalyst, which exhibits higher Ce3+ and Cu2+ ion concentrations and stronger Cu-Ce interaction compared to CuCe-C catalyst. CuCe-DR catalyst shows higher toluene oxidation performance and stability at low temperatures, attributed to the increased surface chemisorbed oxygen and improved redox properties.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Engineering, Chemical

Regulation of oxygen vacancies in cobalt-cerium oxide catalyst for boosting decontamination of VOCs by catalytic oxidation

Lidong Wang et al.

Summary: A series of self-assembled cobalt-cerium oxides with regulated oxygen vacancies were developed for enhancing low-temperature catalytic oxidation of air pollution, particularly targeting volatile organic pollutant toluene. The introduction of cobalt atoms efficiently tuned the oxygen vacancies in the catalyst, improving oxygen species migration and redox cycles of Co3+/Co2+ and Ce4+/Ce3+. The CoCe-5 catalyst showed significantly enhanced performance, with toluene conversion temperature reduced by 23% compared to ceria, attributed to abundant oxygen vacancies promoting adsorption, activation, and oxidation of toluene.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Article Engineering, Chemical

Turning the structural properties and redox ability of Co-La catalyst in the catalytic oxidation of toluene

Zhongxian Song et al.

Summary: The study found that the Co-La catalyst prepared via sol-gel method exhibited the best reactivity and stability, with smaller grain size and larger specific surface area.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Article Chemistry, Physical

Highly efficient and enhanced sulfur resistance supported bimetallic single-atom palladium-cobalt catalysts for benzene oxidation

Zhiquan Hou et al.

Summary: A novel Pd/Co single-atom catalyst (Pd1Co1/Al2O3) was prepared for benzene oxidation by the research team, achieving a benzene conversion of 90% at 250 degrees Celsius. The catalyst exhibited enhanced sulfur resistance performance and good regeneration ability of the active sites.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Physical

MOF-derived CeO2 supported Ag catalysts for toluene oxidation: The effect of synthesis method

Yuxin Wang et al.

Summary: This study focused on the catalytic performance of MOF-derived CeO2 supported Ag catalysts prepared by different synthesis methods for toluene oxidation, identifying the method resulting in the best catalytic performance and analyzing the influencing factors through the study of physicochemical properties.

MOLECULAR CATALYSIS (2021)

Article Chemistry, Physical

Synergistic effect of Pt/Ce and USY zeolite in Pt-based catalysts with high activity for VOCs degradation

Yijun Shi et al.

Summary: Pt/Ce-USY catalysts show superior activity for DCE degradation compared to Pt/USY catalysts, owing to the synergistic effect between abundant acid sites and strong oxidizing sites. For non-chlorinated VOCs degradation, both Pt/USY-r and Pt/Ce-USY-r catalysts exhibit good low-temperature activity, with low T-90 values for benzene, ethyl acetate, and n-hexane degradation, attributed to the active Pt species dispersed on the surface of USY zeolite. The loading of Pt promotes the deep oxidation of CH3Cl and C2H3Cl intermediates to CO2 and inhibits carbon deposition, increasing the durability of the catalyst for VOCs degradation, mainly due to the strong Pt-CeO2 interaction.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Physical

Hierarchically porous silica supported ceria and platinum nanoparticles for catalytic combustion of toluene

Yu Hao et al.

Summary: The hierarchically porous silica was synthesized using a polyelectrolyte-surfactant mesomorphous complex templating method, and then used as a carrier to prepare Pt/xCe/NKM-5 catalyst for toluene catalytic combustion. The Pt/30Ce/NKM-5 catalyst exhibited the most excellent catalytic activity, attributed to the synergy effect of the hierarchical pore structure and the metal-support interaction.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Chemistry, Physical

Recent advances in strategies to modify MIL-125 (Ti) and its environmental applications

Ke Yue et al.

Summary: MIL-125 (Ti) is a well-researched and widely used Ti-MOF in various applications, especially in photocatalysis where its heterojunction composite can improve photocatalytic performance. The article not only introduces modification strategies and applications, but also emphasizes the environmental applications of MIL-125 (Ti).

JOURNAL OF MOLECULAR LIQUIDS (2021)

Article Chemistry, Physical

Investigation into the Enhanced Catalytic Oxidation of o-Xylene over MOF-Derived Co3O4 with Different Shapes: The Role of Surface Twofold-Coordinate Lattice Oxygen (O2f)

Ying Ma et al.

Summary: Co3O4 catalysts with different shapes derived from metal-organic frameworks exhibit enhanced catalytic oxidation of o-xylene, with the active surface oxygen species O-2f playing a crucial role in oxygen vacancy formation and gaseous oxygen replenishment, leading to improved catalytic performance.

ACS CATALYSIS (2021)

Article Engineering, Environmental

Influence of physical structures and chemical modification on VOCs adsorption characteristics of molecular sieves

Xiaoqiang Shen et al.

Summary: The physical structure and chemical modification of molecular sieves significantly affect the adsorption of VOCs, with pure silica molecular sieves exhibiting strong adsorption ability for polar adsorbates and decreasing adsorption ability for nonpolar adsorbates as molecular volume increases. The theoretical results were supported by experimental findings for toluene adsorption on MFI, BEA, and Y-type zeolites.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

Article Chemistry, Physical

Catalytic oxidation of chlorinated VOCs over Ru/TixSn1-x catalysts

Jian Zhao et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Article Chemistry, Applied

MCM-41 supported nano-sized CuO-CeO2 for catalytic combustion of chlorobenzene

Jie Zheng et al.

JOURNAL OF RARE EARTHS (2020)

Article Chemistry, Physical

Cerium-Copper-Manganese Oxides Synthesized via Solution Combustion Synthesis (SCS) for Total Oxidation of VOCs

Miguel Jose Marin Figueredo et al.

CATALYSIS LETTERS (2020)

Article Chemistry, Physical

An Efficient Pt/CeyCoOx Composite Metal Oxide for Catalytic Oxidation of Toluene

Yin Lin et al.

CATALYSIS LETTERS (2020)

Article Engineering, Environmental

Tuning oxygen vacancy concentration of MnO2 through metal doping for improved toluene oxidation

Cui Dong et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

Article Chemistry, Physical

Nanocrystalline Co3O4 catalysts for toluene and propane oxidation: Effect of the precipitation agent

Weidong Zhang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Article Chemistry, Physical

Study of the use of a Pd-Pt-based catalyst for the catalytic combustion of storage tank VOCs

Yu Yang et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

Review Engineering, Environmental

Abatement of various types of VOCs by adsorption/catalytic oxidation: A review

Cuiting Yang et al.

CHEMICAL ENGINEERING JOURNAL (2019)

Article Chemistry, Physical

CO oxidation by Pd supported on CeO2(100) and CeO2(111) facets

Giulia Spezzati et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

Article Engineering, Environmental

Catalytic benzene oxidation by biogenic Pd nanoparticles over 3D-ordered mesoporous CeO2

Yunlong Guo et al.

CHEMICAL ENGINEERING JOURNAL (2019)

Article Chemistry, Physical

Supported ultralow loading Pt catalysts with high H2O-, CO2-, and SO2-resistance for acetone removal

Zhiwei Wang et al.

APPLIED CATALYSIS A-GENERAL (2019)

Article Engineering, Chemical

Effect of a Ce Promoter on Nonoxidative Dehydrogenation of Propane over the Commercial Cr/Al2O3 Catalyst

Yaliu Zhang et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2019)

Article Environmental Sciences

An overview of the development of vertical sampling technologies for ambient volatile organic compounds (VOCs)

Vo Thi Dieu Hien et al.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2019)

Article Chemistry, Physical

Effects of phase structure of MnO2 and morphology of δ-MnO2 on toluene catalytic oxidation

Kan Li et al.

APPLIED SURFACE SCIENCE (2019)

Article Chemistry, Physical

Thermal stability and propane combustion activity of RhxCe1-xO2-y nanoparticles deposited on functionalized alumina

Karolina Anna Ledwa et al.

CATALYSIS SCIENCE & TECHNOLOGY (2019)

Review Chemistry, Applied

Three-dimensionally ordered macroporous perovskite materials for environmental applications

Chenxi Zhang et al.

CHINESE JOURNAL OF CATALYSIS (2019)

Article Chemistry, Physical

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APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

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Monolithic Mn/Ce-based catalyst of fibrous ceramic membrane for complete oxidation of benzene

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APPLIED SURFACE SCIENCE (2018)

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Concurrent catalytic removal of typical volatile organic compound mixtures over Au-Pd/alpha-MnO2 nanotubes

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Mesoporous CoO-supported palladium nanocatalysts with high performance for o-xylene combustion

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CATALYSIS SCIENCE & TECHNOLOGY (2018)

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CATALYSIS SCIENCE & TECHNOLOGY (2018)

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ACS OMEGA (2018)

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ACS CATALYSIS (2017)

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Interface effect of mixed phase Pt/ZrO2 catalysts for HCHO oxidation at ambient temperature

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JOURNAL OF MATERIALS CHEMISTRY A (2017)

Review Biotechnology & Applied Microbiology

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ENVIRONMENTAL TECHNOLOGY & INNOVATION (2017)

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Oriented growth of layered-MnO2 nanosheets over α-MnO2 nanotubes for enhanced room-temperature HCHO oxidation

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APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

Article Nanoscience & Nanotechnology

Solvent-Free Chemical Approach to Synthesize Various Morphological Co3O4 for CO Oxidation

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ACS APPLIED MATERIALS & INTERFACES (2017)

Review Environmental Sciences

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ATMOSPHERIC ENVIRONMENT (2016)

Article Chemistry, Multidisciplinary

The active sites of supported silver particle catalysts in formaldehyde oxidation

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CHEMICAL COMMUNICATIONS (2016)

Article Engineering, Environmental

Shape effect of Pt/CeO2 catalysts on the catalytic oxidation of toluene

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CHEMICAL ENGINEERING JOURNAL (2016)

Article Chemistry, Applied

Occurrence of 13 volatile organic compounds in foods from the Canadian total diet study

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FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT (2016)

Article Chemistry, Physical

Preparation and catalytic performance of Ag, Au, Pd or Pt nanoparticles supported on 3DOM CeO2-Al2O3 for toluene oxidation

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JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2016)

Article Materials Science, Multidisciplinary

Study on the correlation between the surface active species of Pd/cordierite monolithic catalyst and its catalytic activity

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MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS (2016)

Article Materials Science, Multidisciplinary

Study on the correlation between the surface active species of Pd/cordierite monolithic catalyst and its catalytic activity

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MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS (2016)

Review Chemistry, Applied

Gas-solid catalytic reactions over ruthenium-based catalysts

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CHINESE JOURNAL OF CATALYSIS (2016)

Article Chemistry, Physical

1D-MnO2, 2D-MnO2 and 3D-MnO2 for low-temperature oxidation of ethanol

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APPLIED CATALYSIS B-ENVIRONMENTAL (2015)

Article Engineering, Chemical

Combustion kinetics of cyclooctane and its binary mixture with o-xylene over a Pt/γ-alumina catalyst

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CHEMICAL ENGINEERING RESEARCH & DESIGN (2015)

Article Environmental Sciences

Cu-Mn-Ce ternary mixed-oxide catalysts for catalytic combustion of toluene

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JOURNAL OF ENVIRONMENTAL SCIENCES (2015)

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Low temperature catalytic oxidation of volatile organic compounds: a review

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CATALYSIS SCIENCE & TECHNOLOGY (2015)

Article Chemistry, Physical

Morphology effect of Ru/CeO2 catalysts for the catalytic combustion of chlorobenzene

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APPLIED CATALYSIS B-ENVIRONMENTAL (2014)

Article Chemistry, Multidisciplinary

Extraction separation of toluene/cyclohexane with hollow fiber supported ionic liquid membrane

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KOREAN JOURNAL OF CHEMICAL ENGINEERING (2014)

Article Chemistry, Physical

Porous Co3O4 nanowires and nanorods: Highly active catalysts for the combustion of toluene

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APPLIED CATALYSIS A-GENERAL (2013)

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Comparison of the performance for oxidation of formaldehyde on nano-Co3O4, 2D-Co3O4, and 3D-Co3O4 catalysts

Bingyang Bai et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2013)

Article Multidisciplinary Sciences

Characterization and assessment of volatile organic compounds (VOCs) emissions from typical industries

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CHINESE SCIENCE BULLETIN (2013)

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Rod-, flower-, and dumbbell-like MnO2: Highly active catalysts for the combustion of toluene

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APPLIED CATALYSIS A-GENERAL (2012)

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CHEMICAL REVIEWS (2012)

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Binary VOCs absorption in a rotating packed bed with blade packings

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JOURNAL OF ENVIRONMENTAL MANAGEMENT (2012)

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Synthesis and physicochemical characterizations of nanostructured Pt/Al2O3-CeO2 catalysts for total oxidation of VOCs

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JOURNAL OF HAZARDOUS MATERIALS (2011)

Review Chemistry, Physical

Catalytic oxidation of volatile organic compounds on supported noble metals

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APPLIED CATALYSIS B-ENVIRONMENTAL (2010)

Article Chemistry, Physical

Catalytic combustion of VOCs over a series of manganese oxide catalysts

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APPLIED CATALYSIS B-ENVIRONMENTAL (2010)

Article Chemistry, Physical

Catalytic combustion of toluene over electrochemically promoted Ag catalyst

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APPLIED CATALYSIS B-ENVIRONMENTAL (2009)

Article Chemistry, Physical

Properties and performance of Pd based catalysts for catalytic oxidation of volatile organic compounds

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APPLIED CATALYSIS B-ENVIRONMENTAL (2009)

Article Chemistry, Applied

Catalytic combustion of VOCs on non-noble metal catalysts

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CATALYSIS TODAY (2009)

Article Multidisciplinary Sciences

Low-temperature oxidation of CO catalysed by Co3O4 nanorods

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NATURE (2009)

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Complete oxidation of o-xylene over Pd/Al2O3 catalyst at low temperature

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CATALYSIS TODAY (2008)

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Mechanism of HCl oxidation (Deacon process) over RuO2

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JOURNAL OF CATALYSIS (2008)

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Selective Synthesis of Co3O4 Nanocrystal with Different Shape and Crystal Plane Effect on Catalytic Property for Methane Combustion

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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2008)

Article Engineering, Chemical

Mass-transfer performance of rotating packed beds equipped with blade packings in VOCs absorption into water

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SEPARATION AND PURIFICATION TECHNOLOGY (2008)

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Catalytic oxidation of VOCs on Au/Ce-Ti-O

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CATALYSIS TODAY (2007)

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Catalytic purification of waste gases containing VOC mixtures with Ce/Zr solid solutions

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APPLIED CATALYSIS B-ENVIRONMENTAL (2006)

Article Chemistry, Multidisciplinary

Performance of ceramic composite membrane for the separation of VOCs

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KOREAN JOURNAL OF CHEMICAL ENGINEERING (2001)

Article Engineering, Environmental

The revision of the air quality legislation in the European Union related to ground-level ozone

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JOURNAL OF HAZARDOUS MATERIALS (2000)