Surface properties enhanced MnxAlO oxide catalysts derived from MnxAl layered double hydroxides for acetone catalytic oxidation at low temperature

Sun, Yong‐Gang; Zhang, Xin; Li, Na; Xin, Xing; Yang, Hongxun; Zhang, Fenglian; Cheng, Jie; Zhang, Zhongshen; Hao, Zhixin

doi:10.1016/j.apcatb.2019.03.035

Cited by 79 publications

(79 citation statements)

References 44 publications

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“…The presence of Mn 4+ and Mn 3+ was evidenced by the Mn XPS spectra shown in Figure b. On a quantitative basis, the Mn 4+ /Mn 3+ ratio decreased from 3.3 in OMS-2 to 2.3 in PdO–CeO 2 –OMS, suggesting a decrease in the MnO 2 content. − …”

Section: Resultsmentioning

confidence: 91%

Synergistic Effects of Ternary PdO–CeO₂–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Guo

Zhang

Han

et al. 2020

ACS Appl. Mater. Interfaces

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We developed a robust ternary PdO–CeO2–OMS-2 catalyst with excellent catalytic performance in the selective reduction of NO with CO using a strategy based on combining components that synergistically interact leading to an effective abatement of these toxic gases. The catalyst affords 100% selectivity to N2 at the nearly full conversion of NO and CO at 250 °C, high stability in the presence of H2O, and a remarkable SO2 tolerance. To unravel the origin of the excellent catalytic performance, the structural and chemical properties of the PdO–CeO2–OMS-2 nanocomposite were analyzed in the as-prepared and used state of the catalyst, employing a series of pertinent characterization methods and specific catalytic tests. The experimental as well as theoretical results, based on density-functional theory calculations suggest that CO and NO follow different reaction pathways, CO is preferentially adsorbed and oxidized at Pd sites (PdII and Pd0), while NO decomposes on the ceria surface. Lattice oxygen vacancies at the interfacial perimeter of PdO–CeO2 and PdO–OMS-2, and the diffusion of oxygen and oxygen vacancies are proposed to play a critical role in this multicenter reaction system.

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Section: Resultsmentioning

confidence: 91%

Synergistic Effects of Ternary PdO–CeO₂–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Guo

Zhang

Han

et al. 2020

ACS Appl. Mater. Interfaces

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“…As a precursor of ozone generation and photochemical smog, volatile organic compounds (VOCs) not only cause a lot of environmental problems but also are harmful to human health. , Catalytic oxidation has been recognized as one of the most promising technologies because of its advantages of low operating temperature, high treatment efficiency, and few byproducts. , Catalysts are the core of catalytic oxidation technology, which directly affect the oxidation efficiency. Although noble metals (Pt, Pd, Ag, and Au) possess excellent catalytic activity at low temperature, their industrial application is severely restricted by their high price and vulnerability to poison. − By contrast, Co 3 O 4 being a transition metal oxide is cheap and antipoisonous, and its catalytic activity is comparable to that of precious metals. , However, the catalytic performance of a single-component structure is usually worse than that of a multicomponent hybrid structure with a synergistic effect. , He et al synthesized a yolk–shell-like mesoporous CoCrO x catalyst with strong interactions between Co and Cr elements.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 Catalytic oxidation has been recognized as one of the most promising technologies because of its advantages of low operating temperature, high treatment efficiency, and few byproducts. 3,4 Catalysts are the core of catalytic oxidation technology, which directly affect the oxidation efficiency. Although noble metals (Pt, Pd, Ag, and Au) possess excellent catalytic activity at low temperature, their industrial application is severely restricted by their high price and vulnerability to poison.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Acetone Oxidation over the CeO₂/Co₃O₄ Catalyst Derived from Metal–Organic Frameworks

Zheng

Zhao

Shan

et al. 2020

ACS Appl. Mater. Interfaces

115

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A novel CeO2/Co3O4 catalyst with a high catalytic activity has been designed and prepared by pyrolysis of metal–organic frameworks, and its catalytic performance was evaluated by the acetone catalytic oxidation reaction. The Co3O4–M catalyst with T 90 at 194 °C was prepared by pyrolysis of the MOF-71 precursor, which was 56 °C lower than that of commercial Co3O4 (250 °C). By the addition of cerium to the MOF-71 precursor, an enhanced CeO2/Co3O4 catalyst with T 90 at 180 °C was prepared. Importantly, the CeO2/Co3O4 catalyst exhibited superior stability for acetone oxidation. After 10 cycle tests, the conversion could also be maintained at 97% for at least 100 h with slight activity loss. Characterization studies were used to investigate the influence of cerium doping on the property of the catalyst. The results showed that addition of cerium could facilitate the expansion of the surface area and enhance the porous structure and reducibility at low temperature. Furthermore, the surface ratio of Co3+/Co2+ and mobile oxygen obviously improved with the addition of cerium. Therefore, the metal oxides prepared by this method have potential for the elimination of acetone.

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“…Recently, the transition metal oxides including simple and complex metal oxides have received increasing attention as catalysts for the catalytic removal of VOCs due to the advantages of low price, superior thermal stability, and favorable chemical stability under oxidizing atmosphere. [ 25–41 ] Among them, many researches focus on improving the catalytic activity of metal oxides (Pd/Al 2 O 3 –CeO 2 , [ 42 ] Pt/Cr 2 O 3 , [ 43 ] Pt/manganese oxide, [ 44 ] Ru/CeO 2 , [ 45 ] Pd/CoMn x Al 1− x O 3 [ 46 ] ), non‐metallic oxides (Pd/SiO 2 [ 47 ] ) and zeolite (Pd/ZSM‐5, [ 48 ] Nb‐modified Cu/HZSM‐5 [ 49 ] ) through the surface modification of noble metals or transition metals. In terms of photocatalytic degradation of VOCs, many photocatalysts with relative high photocatalytic activity have been developed such as TiO 2 , CeO 2 , CuO, and MnO 2 .…”

Section: Introductionmentioning

confidence: 99%

Perovskite Oxides in Catalytic Combustion of Volatile Organic Compounds: Recent Advances and Future Prospects

Yang

Sun

et al. 2022

Energy & Environ Materials

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Volatile organic compounds are a kind of important indoor and outdoor air pollutants. In recent years, more and more attention has been paid to the ways of volatile organic compound elimination because of its potential long‐term effects on human health. Among the various available methods for volatile organic compound elimination, the catalytic combustion is the most attractive method due to its high efficiency, low cost, simple operation, and easy scale‐up. Perovskite oxides, as a large family of metal oxides with their A‐site mainly of lanthanide element and/or alkaline earth metal element and B‐site of transition metal element, have been extensively investigated as active and stable catalysts for volatile organic compound removal reactions due to their abundant compositional elements, high thermal/chemical stability, and compositional/structural flexibility. The catalytic performance of perovskite oxides is strongly depended on its material composition, morphology, and surface/bulk properties, while the doping, tailored synthesis route, and composite construction may have a significant effect on the bulk (oxygen vacancy concentration, lattice structure), surface (oxygen species, defect) properties, and particulate morphology, consequently the catalytic activity and stability for volatile organic compound removal. Herein, a comprehensive review about the recent advances in perovskite oxides for volatile organic compound elimination reactions based on catalytic combustion is presented from different aspects with a special emphasis on the material design strategies, such as compositional tuning, morphology control, nanostructure building, hybrid construction, and surface modification. At last, some perspectives are presented on the development and design of perovskite oxide‐based catalysts for volatile organic compound removal applications by highlighgting the critical issues and challenges.

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Surface properties enhanced MnxAlO oxide catalysts derived from MnxAl layered double hydroxides for acetone catalytic oxidation at low temperature

Cited by 79 publications

References 44 publications

Synergistic Effects of Ternary PdO–CeO₂–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Synergistic Effects of Ternary PdO–CeO₂–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Enhanced Acetone Oxidation over the CeO₂/Co₃O₄ Catalyst Derived from Metal–Organic Frameworks

Perovskite Oxides in Catalytic Combustion of Volatile Organic Compounds: Recent Advances and Future Prospects

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Surface properties enhanced MnxAlO oxide catalysts derived from MnxAl layered double hydroxides for acetone catalytic oxidation at low temperature

Cited by 79 publications

References 44 publications

Synergistic Effects of Ternary PdO–CeO2–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Synergistic Effects of Ternary PdO–CeO2–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Enhanced Acetone Oxidation over the CeO2/Co3O4 Catalyst Derived from Metal–Organic Frameworks

Perovskite Oxides in Catalytic Combustion of Volatile Organic Compounds: Recent Advances and Future Prospects

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Product

Resources

About

Synergistic Effects of Ternary PdO–CeO₂–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Synergistic Effects of Ternary PdO–CeO₂–OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO

Enhanced Acetone Oxidation over the CeO₂/Co₃O₄ Catalyst Derived from Metal–Organic Frameworks