Synchronously constructing the optimal redox-acidity of sulfate and RuOx Co-modified CeO2 for catalytic combustion of chlorinated VOCs

Article Engineering, Environmental

Modelling and simulation of catalytic ammonia decomposition over Ni-Ru deposited on 3D-printed CeO2

Ilaria Lucentini et al.

Summary: The study focuses on preparing 3D-printed ceria structures via robocasting, impregnating them with Ni and Ru for catalytic decomposition of ammonia, validating the proposed model through simulations and experimental data comparison.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Environmental

Designed preparation of nano rod shaped CeO2-MnOx catalysts with different Ce/Mn ratios and its highly efficient catalytic performance for chlorobenzene complete oxidation: New insights into structure-activity correlations

Jie Wan et al.

Summary: A series of nano rod shaped CeO2-MnOx catalysts with different Ce/Mn molar ratios were synthesized through a facile hydro-thermal method. The Ce/Mn-1/8 catalyst showed the highest catalytic activity and the least production of hazardous byproducts in the complete oxidation of chlorobenzene (CB). The outstanding performance of this catalyst can be attributed to both its unique morphology effect and the strong interaction between CeO2 and MnOx.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Environmental

Ultra-active Ru supported on CeO2 nanosheets for catalytic combustion of Propane: Experimental insights into interfacial active sites

Jinyan Wu et al.

Summary: This study investigates the catalytic oxidation of propane using Ru supported on porous and defect-rich CeO2 nanosheets catalysts. The results show that the Ru/CeO2 catalyst using chlorine-free Ru precursor exhibits ultra-high activity. The presence of chlorine species suppresses dispersion of RuOx species and formation of Ru-O-Ce interfaces, accelerating the sintering of CeO2 and Ru-O-Ce interfaces.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Investigation into the catalytic roles of oxygen vacancies during gaseous styrene degradation process via CeO2 catalysts with four different morphologies

Ying Zhang et al.

Summary: CeO2 catalysts with different morphologies showed different thermocatalytic activities for gaseous styrene degradation. Spherical CeO2 exhibited the highest activity, which was attributed to its lattice distortion and oxygen vacancy concentration. Oxygen vacancies were identified as the main active sites, and the superior performance of spherical CeO2 was attributed to the lesser accumulation of intermediates on its surface.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Physical

Unveiling the lead resistance mechanism and interface regulation strategy of Ru-based catalyst during chlorinated VOCs oxidation

Xuelong Lv et al.

Summary: This study systematically investigates the effect of Pb poisoning on the activity of Ru-based catalysts during CVOCs oxidation, and finds that the high Pb resistance can be attributed to the oxygen vacancies on the supports capturing Pb ions and the formation of stable Ru-O-M bonds weakening the affinity between active sites and Pb. These findings contribute to the industrial application of Ru-based catalysts in Pb-containing scenarios.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Engineering, Environmental

Insight into the Role of Cerium in the Enhanced Performances during Catalytic Combustion of Acetonitrile over Core-Shell-like Cu-Ce/ZSM-5 Catalysts

Yaoyu Zhang et al.

Summary: Cerium-modified Cu/ZSM-5 catalysts effectively improved the mineralization rate and nitrogen selectivity of acetonitrile. The core-shell-like structure of Cu-Ce/ZSM-5 samples, with a Cu-Ce mixed oxide layer, exhibited enhanced reducibility and increased active oxygen species. Surface cerium species strengthened the hydrolysis reaction path of acetonitrile, generating sufficient NH species. The Cu-Ce/ZSM-5 core eliminated NO from acetonitrile overoxidation through internal selectivity catalytic reduction.

ACS ES&T ENGINEERING (2022)

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Article Nanoscience & Nanotechnology

Single-Atom Ru on Al2O3 for Highly Active and Selective 1,2-Dichloroethane Catalytic Degradation

Jiajing Pei et al.

Summary: A single-atom Ru catalyst anchored on mesoporous schistose gamma-Al2O3 has been developed to enhance catalytic activity and selectivity towards 1,2-DCE degradation. The catalyst shows lower conversion temperatures and mainly produces CO2 and HCl as degradation products. Furthermore, it also exhibits excellent anti-chlorine poisoning effect and water resistance during stability tests, suggesting potential for efficient degradation of industrial pollutants.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Engineering, Environmental

How to achieve complete elimination of Cl-VOCs: A critical review on byproducts formation and inhibition strategies during catalytic oxidation

Fawei Lin et al.

Summary: This review examines the formation of byproducts in the catalytic oxidation of Cl-VOCs, with a focus on the potential risks posed by polychlorinated byproducts. Strategies to inhibit byproducts formation are explored, with an emphasis on the need to develop catalysts for the efficient and complete elimination of Cl-VOCs. Further research is needed to understand the migration and evolution routes of Cl species and design catalysts to achieve truly complete elimination of Cl-VOCs without secondary pollution.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Engineering, Environmental

High Selectivity to HCl for the Catalytic Removal of 1,2-Dichloroethane Over RuP/3DOM WOx: Insights into the Effects of P-Doping and H2O Introduction

Xiaohui Yu et al.

Summary: The study indicates that P-doping and H2O introduction can enhance the selectivity of HCl in the oxidation reaction of 1,2-dichloroethane, reducing the generation of chlorine-containing byproducts.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

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Article Chemistry, Physical

Catalytic oxidation of chlorinated volatile organic compounds over Mn-Ti composite oxides catalysts: Elucidating the influence of surface acidity

Hao Liu et al.

Summary: The reducibility and surface acidity of Mn-Ti composite oxides were controlled by adjusting the Mn/Ti molar ratio, impacting their catalytic activity for the deep oxidation of vinyl chloride. It was found that the catalyst surface acidity played a decisive role in the oxidation process, while Lewis acidic sites from Ti species also influenced the catalytic activity.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Engineering, Environmental

HCl-Tolerant HxPO4/RuOx-CeO2 Catalysts for Extremely Efficient Catalytic Elimination of Chlorinated VOCs

Qiguang Dai et al.

Summary: Bulk metal doping and surface phosphate modification synergistically enhance the catalytic performance of CeO2 catalysts for the oxidation of Cl-VOCs, suppressing the formation of polychlorinated byproducts and improving surface structural stability.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

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Article Chemistry, Physical

Catalytic combustion of chlorobenzene at low temperature over Ru-Ce/TiO2: High activity and high selectivity

Wenjun Liang et al.

Summary: The addition of Ce can reduce the noble metal content while maintaining catalytic efficiency, improving the low-temperature catalytic oxidation of chlorobenzene. Ce helps store and release oxygen, enhancing the activity and dispersion of precious metal, and promotes the formation of Ru-O-Ce interaction for better catalytic performance.

APPLIED CATALYSIS A-GENERAL (2021)

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Article Engineering, Environmental

Bifunctional Catalytic Cooperativity on Nanoedge: Oriented Ce-Fe Bimetallic Fenton Electrocatalysts for Organic Pollutant Control

Ying Liu et al.

Summary: Ce-doped vertically aligned alpha-FeOOH nanoflakes anchored on a carbon felt cathode can efficiently generate H2O2 and convert it to center dot OH in Electro-Fenton operation, achieving high removal and mineralization efficiency.

ACS ES&T ENGINEERING (2021)

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Article Chemistry, Physical

The superior performance of dichloromethane oxidation over Ru doped sulfated TiO2 catalysts: synergistic effects of Ru dispersion and acidity

Qingji Ying et al.

APPLIED SURFACE SCIENCE (2020)

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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)

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Article Chemistry, Physical

3DOM CeO2-supported RuyM (M = Au, Pd, Pt) alloy nanoparticles with improved catalytic activity and chlorine-tolerance in trichloroethylene oxidation

Xing Zhang et al.

CATALYSIS SCIENCE & TECHNOLOGY (2020)

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Article Engineering, Environmental

Ru/CeO2 Catalyst with Optimized CeO2 Support Morphology and Surface Facets for Propane Combustion

Zheng Wang et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

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Article Engineering, Environmental

Efficient Elimination of Chlorinated Organics on a Phosphoric Acid Modified CeO2 Catalyst: A Hydrolytic Destruction Route

Xiaoxia Dai et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

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Article Engineering, Environmental

Adsorption/catalytic combustion of toxic 1,2-dichloroethane on multifunctional Nb2O5-TiO2 composite metal oxides

Peng Yang et al.

CHEMICAL ENGINEERING JOURNAL (2019)

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Article Chemistry, Applied

Elimination of 1,2-dichloroethane over (Ce,Cr)xO2/Nb2O5 catalysts: synergistic performance between oxidizing ability and acidity

Jie Wan et al.

CHINESE JOURNAL OF CATALYSIS (2019)

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Article Chemistry, Physical

Bimodal mesoporous TiO2 supported Pt, Pd and Ru catalysts and their catalytic performance and deactivation mechanism for catalytic combustion of Dichloromethane (CH2Cl2)

Shuang Cao et al.

APPLIED CATALYSIS A-GENERAL (2018)

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Article Chemistry, Physical

Low-Temperature CO2 Methanation over CeO2-Supported Ru Single Atoms, Nanoclusters, and Nanoparticles Competitively Tuned by Strong Metal-Support Interactions and H-Spillover Effect

Yu Guo et al.

ACS CATALYSIS (2018)

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Article Chemistry, Physical

Catalytic removal of 1,2-dichloroethane over LaSrMnCoO6/H-ZSM-5 composite: insights into synergistic effect and pollutant-destruction mechanism

Mingjiao Tian et al.

CATALYSIS SCIENCE & TECHNOLOGY (2018)

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Article Engineering, Environmental

Phosphate-Functionalized CeO2 Nanosheets for Efficient Catalytic Oxidation of Dichloromethane

Qiguang Dai et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

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Article Engineering, Environmental

Catalytic Oxidation of Chlorobenzene over MnxCe1-xO2/HZSM-5 Catalysts: A Study with Practical Implications

Xiaole Weng et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2017)

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New insight into the structure of CeO2-TiO2 mixed oxides and their excellent catalytic performances for 1,2-dichloroethane oxidation

Zhinan Shi et al.

CHEMICAL ENGINEERING JOURNAL (2016)

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Designed SO42-/Fe2O3-SiO2 solid acids for polyoxymethylene dimethyl ethers synthesis: The acid sites control and reaction pathways

Huaju Li et al.

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Current status and perspectives of rare earth catalytic materials and catalysis

Wahgcheng Zhan et al.

CHINESE JOURNAL OF CATALYSIS (2014)

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Promoted activity of sulphated Ce/Zr mixed oxides for chlorinated VOC oxidative abatement

B. de Rivas et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2013)

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Intrinsic Relation between Catalytic Activity of CO Oxidation on Ru Nanoparticles and Ru Oxides Uncovered with Ambient Pressure XPS

Kamran Qadir et al.

NANO LETTERS (2012)

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Surface properties and catalytic behavior of Ru supported on composite La2O3-SiO2 oxides

B. M. Faroldi et al.

APPLIED CATALYSIS A-GENERAL (2009)

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Tailoring and structure of PtRu nanoparticles supported on functionalized carbon for DMFC applications: New evidence of the hydrous ruthenium oxide phase

J. L. Gomez de la Fuente et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2009)

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Lewis and Bronsted acids in super-acid catalyst SO4 (2-)/ZrO2-SiO2

Yan Wang et al.

JOURNAL OF MATERIALS SCIENCE (2009)

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XPS spectra and electronic structure of Group IA sulfates

M. Wahlqvist et al.

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA (2007)

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Catalytic combustion of trichloroethene over Ru/Al2O3:: Reaction mechanism and kinetic study

Beatriz Miranda et al.

CATALYSIS COMMUNICATIONS (2006)

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Characterization of sulfated TiO2 prepared by the sol-gel method and its catalytic activity in the n-hexane isomerization reaction

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JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2005)

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Enhanced Water Resistance and Catalytic Performance of Ru/TiO2 by Regulating Bronsted Acid and Oxygen Vacancy for the Oxidative Removal of 1,2-Dichloroethane and Toluene

Xiaohui Yu et al.

Summary: This study compared the oxidation of 1,2-dichloroethane and a mixture of 1,2-dichloroethane and toluene using different catalysts. The results showed that HPW modification successfully enhanced the oxidation activity of 1,2-dichloroethane but led to excessive adsorption of toluene, inhibiting the degradation of 1,2-dichloroethane. Compared to Brionsted acid modification, catalysts with oxygen vacancies are more suitable for the oxidation of multicomponent VOCs.

ENVIRONMENTAL SCIENCE & TECHNOLOGY

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Synchronously constructing the optimal redox-acidity of sulfate and RuOx Co-modified CeO2 for catalytic combustion of chlorinated VOCs

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