4.7 Article

Effect of CuO species and oxygen vacancies over CuO/CeO2 catalysts on low-temperature oxidation of ethyl acetate

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Recent advances of metal-organic framework-based and derivative materials in the heterogeneous catalytic removal of volatile organic compounds

Renzhi Rao et al.

Summary: This paper reviews the recent applications of heterogeneous catalytic technologies in the degradation of volatile organic compounds (VOCs), including photocatalysis, thermal catalysis, and other catalytic approaches. It highlights the applications of metal organic frameworks (MOFs) and their derivatives in VOCs degradation, such as the progress of MOF-derived metal oxides in the treatment of toluene. The mechanisms of VOCs degradation by different catalytic approaches are systematically presented, and the views and directions of VOCs treatment technology development are discussed.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

Review Engineering, Environmental

Oxygen vacancies in the catalyst: Efficient degradation of gaseous pollutants

Shenghao Zhao et al.

Summary: This paper reviews recent research advances in improving the performance of catalysts for the degradation of gaseous pollutants based on controlling oxygen vacancies (OVs). The relationship between OVs and the degradation performance of typical gaseous pollutants is elucidated, and various approaches for generating and characterizing OVs in catalysts are summarized. The challenges and future opportunities for the development of oxygen-deficient catalysts are also discussed in this review.

CHEMICAL ENGINEERING JOURNAL (2023)

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)

Article Chemistry, Applied

Effect of interaction between different CeO2 plane and platinum nanoparticles on catalytic activity of Pt/CeO2 in toluene oxidation

Shengsheng Chang et al.

Summary: The effect of CeO2 plane exposure on total toluene oxidation was investigated by preparing CeO2 nanorods, nano-octahedrons, and nano-cubes with different plane exposures. The results revealed that the (110) plane of CeO2 was the most beneficial for the dispersion of Pt species, followed by the (111) face. The improved Pt species dispersion enhanced the metal-supports interaction, facilitating the electron transfer and O2 adsorption-activation, thus promoting the total oxidation of toluene.

JOURNAL OF RARE EARTHS (2022)

Article Chemistry, Applied

Unraveling specific role of carbon matrix over Pd/quasi-Ce-MOF facilitating toluene enhanced degradation

Chunjing Su et al.

Summary: This study synthesized Pd/quasi-Ce-BTC catalyst by simple one-step pyrolysis and applied it in the oxidation of toluene, showing excellent catalytic activity. Microscopic analysis revealed the formation of a carbon matrix composite quasi-MOF structure interface. The results demonstrated that the amorphous carbon matrix significantly enhanced the adsorption and activation capacity of toluene in the reaction, creating a reductive system that facilitated the activation and utilization of oxygen. In-situ XPS analysis confirmed the involvement of the carbon matrix in oxygen activation and storage, with Pd0 identified as the crucial active site. Stability and water resistance tests indicated the good stability of Pd/quasi-Ce-BTC. This study provides a potential method for the development of quasi-MOF catalysts for effective VOCs abatement.

JOURNAL OF RARE EARTHS (2022)

Article Chemistry, Physical

Highly efficient photothermal catalysis of toluene over Co3O4/TiO2 p-n heterojunction: The crucial roles of interface defects and band structure

Yang Yang et al.

Summary: The unique properties presented in the interface of composite oxides have important implications for catalytic degradation. In this study, MOx/TiO2 composites were used for the full spectrum light-assisted photothermal catalytic degradation of toluene. A p-n heterojunction with interface defects was constructed between TiO2 and Co3O4, leading to improved photothermal performance. The relationship between interface properties, band structure, and catalytic performance was comprehensively studied based on experimental results and theoretical calculations.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Applied

Synergistic effects of CeO2/Cu2O on CO catalytic oxidation: Electronic interaction and oxygen defect

Chengyan Ge et al.

Summary: Cu and Ce species play important roles in CO catalytic oxidation, and their synergistic effect is worth investigating. This study compares the performance of CeO2/Cu2O on different crystal planes and reveals the impact of interfacial electronic interactions and oxygen defects on the catalytic reaction. The results show that CeO2/o-Cu2O {111} exhibits superior performance, thanks to the coordination unsaturated copper atoms on this crystal plane. Through interfacial electronic interactions, CeO2/o-Cu2O {111} generates more oxygen defects and improves the redox and activation abilities of CO and O-2. Furthermore, the study reveals the reaction mechanism of CeO2/o-Cu2O {111} in CO oxidation.

JOURNAL OF RARE EARTHS (2022)

Article Chemistry, Physical

Silica-Supported Copper (II) Oxide Cluster via Ball Milling Method for Catalytic Combustion of Ethyl Acetate

Yuhang Ye et al.

Summary: Highly dispersed CuO/SiO2 catalysts were successfully synthesized by a green process of ball milling. The copper phyllosilicate layer plays an important role in the stabilization of CuO during thermal pretreatment.

CATALYSTS (2022)

Article Chemistry, Physical

Stable Black Phosphorus Encapsulation in Porous Mesh-like UiO-66 Promoted Charge Transfer for Photocatalytic Oxidation of Toluene and o-Dichlorobenzene: Performance, Degradation Pathway, and Mechanism

Jinfeng Chen et al.

Summary: This study presents a new strategy to enhance the charge transfer from Zr atoms in UiO-66 to black phosphorus (BP) for the photocatalytic degradation of toluene and o-dichlorobenzene. The formation of Zr-P bonds is the key to improve the charge-transfer capability of BP-UiO, which is encapsulated by a hydrophilic porous mesh-like UiO-66 layer. BP-UiO shows enhanced visible-light-harvesting ability, charge transport capability, and photocatalytic activity. In situ IR and GC-MS techniques are used to investigate the degradation pathways of contaminants.

ACS CATALYSIS (2022)

Article Chemistry, Physical

The promoting effect of alkali metal and H2O on Mn-MOF derivatives for toluene oxidation: A combined experimental and theoretical investigation

Xiaodong Zhang et al.

Summary: In this work, alkali metal-doped manganese-based metal-organic framework (Mn-MOF) derivative materials were obtained and their catalytic activities in toluene oxidation were studied. The results showed that the Na-doped Mn-MOF derivatives exhibited higher catalytic activity due to their larger specific surface area, lower average manganese valence, and better adsorbed oxygen mobility. Furthermore, the addition of alkali metal and the presence of water in the reaction atmosphere promoted the mineralization of toluene.

JOURNAL OF CATALYSIS (2022)

Article Chemistry, Physical

Boosting toluene oxidation by the regulation of Pd species on UiO-66: Synergistic effect of Pd species

Xiaodong Zhang et al.

Summary: Supported single-atoms and sub-nanometre clusters have shown excellent catalytic performance in many reactions, but they are prone to inactivation in complex reactive conditions. This study demonstrates that Pd-UiO-66 catalyst with ultra-low Pd loading contains active Pd species (isolated Pd atom, sub-nanometre Pd clusters, and Pd nanoparticles), and exhibits superb activity for toluene oxidation and water resistance.

JOURNAL OF CATALYSIS (2022)

Article Chemistry, Physical

Mn-incorporated Co3O4 bifunctional electrocatalysts for zinc-air battery application: An experimental and DFT study

Changfei Huang et al.

Summary: Manganese-incorporated Co3O4 catalysts, prepared through thermal pyrolysis of ZIF-67, showed enhanced electrocatalytic activity for oxygen reduction and evolution reactions. The catalyst annealed at 450 degrees C exhibited the best performance in terms of catalytic activity, delivering high power density and good cycling stability in zinc-air battery applications. The improved catalytic activity can be attributed to the introduction of manganese and the induced structural changes.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Engineering, Environmental

Chlorine-Coordinated Pd Single Atom Enhanced the Chlorine Resistance for Volatile Organic Compound Degradation: Mechanism Study

Fukun Bi et al.

Summary: In this study, Pd@ZrO2 catalysts with high chlorine resistance were prepared using a Zr-based metal-organic framework (MOF) as a sacrificial template. The catalyst exhibited excellent water resistance, long-term stability, and resistance to CO and dichloromethane (DCM) for volatile organic compound (VOC) elimination. The results suggest that this work provides a new strategy for designing high-chlorine resistance catalysts to improve the atmospheric environment.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Chemistry, Applied

Facile fabrication of hollow structured Cu-Ce binary oxides and their catalytic properties for toluene combustion

Lei Li et al.

Summary: A series of hollow structured CuCeOx composite catalysts with different Cu/Ce molar ratios were synthesized via a simple hydrothermal approach and applied in catalytic combustion of toluene. Among the catalysts, Cu6Ce4Ox catalyst showed superior catalytic performance, attributed to its high surface area, low-temperature reducibility, and abundant surface active oxygen species. The DRIFTs results revealed the possible pathway for toluene oxidation, involving intermediates such as benzyl alcohol, benzaldehyde, and benzoate species leading to decomposition into CO2 and H2O.

CATALYSIS TODAY (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, Environmental

Simple strategy for the construction of oxygen vacancies on α-MnO2 catalyst to improve toluene catalytic oxidation

Lingzhu Chen et al.

Summary: A strategy for large-scale production of high-activity alpha-MnO2 catalysts in VOCs oxidation is crucial. By adjusting the precipitation temperature, construction of oxygen vacancies on alpha-MnO2 has been achieved, improving its catalytic activity. The best catalyst, alpha-MnO2-60, showed significantly improved activity despite its lower specific surface area, highlighting the importance of surface oxygen vacancies in catalytic activity. This work offers insights for rational design of efficient VOCs catalysts.

JOURNAL OF HAZARDOUS MATERIALS (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

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

Jian Zhao et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Article Chemistry, Physical

The role of metal-support interaction in Ag/CeO2 catalysts for CO and soot oxidation

M. V. Grabchenko et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Article Engineering, Environmental

Roles of Oxygen Vacancies in the Bulk and Surface of CeO2 for Toluene Catalytic Combustion

Ziang Su et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2020)

Article Nanoscience & Nanotechnology

Optimum Preferential Oxidation Performance of CeO2-CuOx-RGO Composites through Interfacial Regulation

Junfang Ding et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

Article Chemistry, Physical

A comparative study of CO oxidation over Cu-O-Ce solid solutions and CuO/CeO2 nanorods catalysts

Shaikh Tofazzel Hossain et al.

APPLIED SURFACE SCIENCE (2018)

Article Chemistry, Physical

Cu/CeO2 Catalyst for Water-Gas Shift Reaction: Effect of CeO2 Pretreatment

Chongqi Chen et al.

CHEMPHYSCHEM (2018)

Article Chemistry, Applied

Catalytic combustion of VOCs on Pt/CuMnCe and Pt/CeY honeycomb monolithic catalysts

Anming Zhu et al.

JOURNAL OF RARE EARTHS (2018)

Article Chemistry, Multidisciplinary

CeCu composite catalyst for CO synthesis by reverse water-gas shift reaction: Effect of Ce/Cu mole ratio

Guilin Zhou et al.

JOURNAL OF CO2 UTILIZATION (2017)

Article Chemistry, Physical

The NO oxidation performance over Cu/Ce0.8Zr0.2O2 catalyst

Zhong Wang et al.

SURFACES AND INTERFACES (2017)

Article Chemistry, Physical

Boosting soot combustion efficiencies over CuO-CeO2 catalysts with a 3DOM structure

Jinguo Wang et al.

CATALYSIS SCIENCE & TECHNOLOGY (2016)

Article Chemistry, Physical

Small CuO clusters on CeO2 nanospheres as active species for catalytic N2O decomposition

Maxim Zabilskiy et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2015)

Article Chemistry, Multidisciplinary

CO oxidation on CuO/CeO2 catalyst prepared by solvothermal synthesis: influence of catalyst activation temperature

Yuling Zheng et al.

JOURNAL OF NANOPARTICLE RESEARCH (2015)

Article Chemistry, Physical

Active sites over CuO/CeO2 and inverse CeO2/CuO catalysts for preferential CO oxidation

Shanghong Zeng et al.

JOURNAL OF POWER SOURCES (2014)

Article Chemistry, Physical

Supported Au catalysts for low-temperature abatement of propene and toluene, as model VOCs: Support effect

M. Ousmane et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2011)

Article Chemistry, Physical

Catalytic combustion of VOCs over a series of manganese oxide catalysts

Sang Chai Kim et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2010)

Article Chemistry, Physical

Characterization and catalytic performance of Cu/CeO2 and Cu/MgO-CeO2 catalysts for NO reduction by CO

Jinfa Chen et al.

APPLIED CATALYSIS A-GENERAL (2009)

Article Chemistry, Physical

VOC oxidation over CuO-CeO2 catalysts prepared by a combustion method

Dimitrios Delimaris et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2009)

Article Chemistry, Applied

Catalytic combustion of VOCs on non-noble metal catalysts

W. B. Li et al.

CATALYSIS TODAY (2009)

Article Chemistry, Applied

Effect of CeO2 preparation method and Cu loading on CuO/CeO2 catalysts for methane combustion

Weiling Yang et al.

JOURNAL OF NATURAL GAS CHEMISTRY (2009)

Article Chemistry, Physical

Effect of synthesis parameters on catalytic properties of CuO-CeO2

George Avgouropoulos et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2006)

Article Chemistry, Physical

Electronic structure of the CeO2(110) surface oxygen vacancy

B Herschend et al.

SURFACE SCIENCE (2005)

Article Chemistry, Physical

CuO/CeO2 catalysts:: Redox features and catalytic behaviors

XL Tang et al.

APPLIED CATALYSIS A-GENERAL (2005)

Review Chemistry, Multidisciplinary

Atmospheric degradation of volatile organic compounds

R Atkinson et al.

CHEMICAL REVIEWS (2003)

Article Chemistry, Multidisciplinary

Catalytic combustion of benzene over supported metal oxides catalysts

SS Hong et al.

KOREAN JOURNAL OF CHEMICAL ENGINEERING (2003)

Article Chemistry, Physical

Perovskite-type oxides synthesized by reactive grinding Part I. Preparation and characterization

S Kaliaguine et al.

APPLIED CATALYSIS A-GENERAL (2001)