Effect of Calcination Temperature on Surface Oxygen Vacancies and Catalytic Performance Towards CO Oxidation of Co3O4 Nanoparticles Supported on SiO2

2012 ◽  
Vol 25 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Jin-bing Li ◽  
Zhi-quan Jiang ◽  
Kun Qian ◽  
Wei-xin Huang
Keyword(s):  
Co Oxidation ◽  
Calcination Temperature ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Co3o4 Nanoparticles ◽  
Surface Oxygen

scholarly journals Low temperature CO oxidation catalysed by flower-like Ni–Co–O: how physicochemical properties influence catalytic performance

RSC Advances ◽  
2018 ◽  
Vol 8 (13) ◽  
pp. 7110-7122 ◽  
Author(s):  
Yunan Yi ◽  
Pan Zhang ◽  
Zuzeng Qin ◽  
Chuxuan Yu ◽  
Wei Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Physicochemical Properties ◽  
Co Oxidation ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Surface Oxygen ◽  
High Concentration ◽  
Highly Dispersed ◽  
Low Temperature Co Oxidation

The flower-like catalyst possesses highly dispersed amorphous NiO and a high concentration of surface oxygen vacancies which are the central points for CO oxidation.

scholarly journals On the Effects of Doping on the Catalytic Performance of (La,Sr)CoO3. A DFT Study of CO Oxidation

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 312 ◽  
Author(s):  
Antonella Glisenti ◽  
Andrea Vittadini
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Formation Energy ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Energy Profiles ◽  
High Concentrations ◽  
3D Impurities

The effects of modifying the composition of LaCoO3 on the catalytic activity are predicted by density functional calculations. Partially replacing La by Sr ions has benefical effects, causing a lowering of the formation energy of O vacancies. In contrast to that, doping at the Co site is less effective, as only 3d impurities heavier than Co are able to stabilize vacancies at high concentrations. The comparison of the energy profiles for CO oxidation of undoped and of Ni-, Cu-m and Zn-doped (La,Sr)CoO3(100) surface shows that Cu is most effective. However, the effects are less spectacular than in the SrTiO3 case, due to the different energetics for the formation of oxygen vacancies in the two hosts.

Black TiO2−x with stable surface oxygen vacancies as the support of efficient gold catalysts for water-gas shift reaction

2018 ◽  
Vol 8 (5) ◽  
pp. 1277-1287 ◽  
Author(s):  
Lei Li ◽  
Li Song ◽  
Longfeng Zhu ◽  
Zheng Yan ◽  
Xuebo Cao
Keyword(s):  
Oxygen Vacancies ◽  
Electron Flow ◽  
Catalytic Performance ◽  
Water Gas Shift ◽  
Hot Electron ◽  
Surface Oxygen ◽  
Water Gas Shift Reaction ◽  
Black Tio2 ◽  
Shift Reaction ◽  
Water Gas

H2-etching engineered oxygen vacancies on black TiO2−x to enhance the hot-electron flow and water-gas shift catalytic performance of Au catalysts.

Surface oxygen vacancies in gold based catalysts for CO oxidation

RSC Advances ◽  
2014 ◽  
Vol 4 (25) ◽  
pp. 13145-13152 ◽  
Author(s):  
F. Romero-Sarria ◽  
J. J. Plata ◽  
O. H. Laguna ◽  
A. M. Márquez ◽  
M. A. Centeno ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxygen Vacancies ◽  
Surface Oxygen

Conversion of syngas into light olefins over bifunctional ZnCeZrO/SAPO-34 catalysts: regulation of the surface oxygen vacancy concentration and its relation to the catalytic performance

2021 ◽  
Author(s):  
Yaoya Luo ◽  
Sen Wang ◽  
Shujia Guo ◽  
Kai Yuan ◽  
Hao Wang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Oxygen Vacancies ◽  
Vacancy Concentration ◽  
Catalytic Performance ◽  
Light Olefins ◽  
Oxygen Vacancy Concentration ◽  
Surface Oxygen ◽  
Surface Oxygen Vacancy

Surface oxygen vacancies can improve the formation of methanol intermediates and promote their evolution into olefin products for syngas-to-olefins over Zn0.5CeZrOx/SAPO-34.

Study of the Surface Oxygen Vacancies Evolvement on the Single and Bi-Components Manganese Oxide Precursors and their Catalytic Performance

2017 ◽  
Vol 147 (3) ◽  
pp. 727-737 ◽  
Author(s):  
Renchun Yang ◽  
Chao Ren ◽  
Xuegang Teng ◽  
Zhiming Chen ◽  
Shanshan Wu ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Surface Oxygen

Influence of calcination temperature on the structure and catalytic performance of CuOx-CoOy-CeO2 ternary mixed oxide for CO oxidation

2013 ◽  
Vol 451 ◽  
pp. 282-288 ◽  
Author(s):  
Zhi-Gang Liu ◽  
Song-Hai Chai ◽  
Andrew Binder ◽  
Yuan-Yuan Li ◽  
Lin-Tao Ji ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Calcination Temperature ◽  
Mixed Oxide ◽  
Catalytic Performance ◽  
Ternary Mixed Oxide

CO oxidation over the polyoxometalate-supported single-atom catalysts M1/POM (Fe, Co, Mn, Ru, Rh, Os, Ir, and Pt; POM = [PW12O40]3–): a computational study on the activation of surface oxygen species

2019 ◽  
Vol 48 (18) ◽  
pp. 6228-6235 ◽  
Author(s):  
Chun-Guang Liu ◽  
Li-Long Zhang ◽  
Xue-Mei Chen
Keyword(s):  
Density Functional Theory ◽  
Co Oxidation ◽  
Density Functional ◽  
Computational Study ◽  
Density Functional Theory Calculations ◽  
Catalytic Performance ◽  
Single Atom ◽  
Oxygen Species ◽  
Surface Oxygen ◽  
Functional Theory

Density functional theory calculations have been carried out to explore the catalytic performance of a series of the M1/POM (M = Fe, Co, Mn, Ru, Rh, Os, Ir, and Pt; POM = [PW12O40]3−) single-atom catalysts for CO oxidation.

Engineering CuOx–ZrO2–CeO2 nanocatalysts with abundant surface Cu species and oxygen vacancies toward high catalytic performance in CO oxidation and 4-nitrophenol reduction

CrystEngComm ◽  
2020 ◽  
Vol 22 (23) ◽  
pp. 4005-4013 ◽  
Author(s):  
Baolin Liu ◽  
Yizhao Li ◽  
Shaojun Qing ◽  
Kun Wang ◽  
Jing Xie ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Solvent Free ◽  
Metal Species ◽  
Synthetic Strategy ◽  
Nitrophenol Reduction ◽  
Active Metal ◽  
Excellent Catalytic Performance

CuOx–ZrO2–CeO2 nanocrystalline catalysts were designed and synthesized by a solvent-free synthetic strategy, and exhibited excellent catalytic performance owing to the increased oxygen vacancies and better dispersed active metal species.

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