Fabrication of More Oxygen Vacancies and Depression of Encapsulation for Superior Catalysis in the Water–Gas Shift Reaction

2021 ◽  
pp. 10646-10653
Author(s):  
Qijun Pei ◽  
Guanghao Qiu ◽  
Yang Yu ◽  
Jintao Wang ◽  
Khai Chen Tan ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Shift Reaction ◽  
Water Gas

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.

Comparison of the effects of the catalyst preparation method and CeO2 morphology on the catalytic activity of Pt/CeO2 catalysts for the water-gas shift reaction

2020 ◽  
Vol 10 (18) ◽  
pp. 6299-6308 ◽  
Author(s):  
Yeol-Lim Lee ◽  
Anush Mnoyan ◽  
Hyun-Suk Na ◽  
Seon-Yong Ahn ◽  
Kyoung-Jin Kim ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Vacancies ◽  
Preparation Method ◽  
Catalyst Preparation ◽  
Water Gas Shift ◽  
High Catalytic Activity ◽  
Water Gas Shift Reaction ◽  
Key Factors ◽  
Shift Reaction ◽  
Water Gas

The key factors (Pt0 dispersion & oxygen vacancies) should maintain high values to attain high catalytic activity and they are directly affected by the morphology and the preparation method of the catalyst.

scholarly journals Use of CuNi/YSZ and CuNi/SDC Catalysts for the Reverse Water Gas Shift Reaction

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Maxime Lortie ◽  
Rima J. Isaifan
Keyword(s):  
Oxygen Vacancies ◽  
Yttria Stabilized Zirconia ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Stabilized Zirconia ◽  
Reverse Water Gas Shift ◽  
Partial Pressures ◽  
Modified Polyol Method ◽  
Shift Reaction ◽  
Water Gas

Cu50Ni50 nanoparticles were synthesized using a modified polyol method and deposited on samarium-doped ceria, SDC, and yttria-stabilized zirconia, YSZ, supports to form reverse water-gas shift, RWGS, catalysts. The best CO yields, obtained with the Cu50Ni50/SDC catalyst, were about 90% of the equilibrium CO yields. In contrast CO yields using Pt/SDC catalysts were equal to equilibrium CO yields at 700°C. Catalyst selectivity to CO was 100% at hydrogen partial pressures equal to CO2 partial pressures, 1 kPa, and decreased as methane was formed when the hydrogen partial pressure was 2 kPa or greater. The reaction results were explained using a combination of Eley-Rideal and Langmuir-Hinshelwood mechanisms that involved adsorption on the metal surface and the concentration of oxygen vacancies in the support. Finally the Cu50Ni50/SDC catalyst was found to be thermally stable for 48 hours at 600/700°C.

Fabrication of Oxygen Vacancies through Assembling Amorphous Titanate Overlayer on Titanium Oxide for Catalytic Water-Gas Shift Reaction

2021 ◽  
Author(s):  
Qijun Pei ◽  
Teng He ◽  
Yang Yu ◽  
Zijun Jing ◽  
Jintao Wang ◽  
...  
Keyword(s):  
Titanium Oxide ◽  
Chemical Process ◽  
Oxygen Vacancies ◽  
Hydrogen Generation ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Wgs Reaction ◽  
Co Removal ◽  
Shift Reaction ◽  
Water Gas

Water-gas shift (WGS) reaction is a key chemical process for CO removal and hydrogen generation that convert CO and H2O to CO2 and H2. The activation of H2O at the...

Synergetic effect of Cu active sites and oxygen vacancies in Cu/CeO2–ZrO2 for the water–gas shift reaction

2021 ◽  
Author(s):  
Yuanwu Hu ◽  
Na Wang ◽  
Zhiming Zhou
Keyword(s):  
Active Sites ◽  
Oxygen Vacancies ◽  
Vacancy Concentration ◽  
Synergetic Effect ◽  
Water Gas Shift ◽  
Oxygen Vacancy Concentration ◽  
Water Gas Shift Reaction ◽  
Positive Linear Correlation ◽  
Shift Reaction ◽  
Water Gas

A positive linear correlation was established between the TOF and the ratio of oxygen vacancy concentration to Cu dispersion, demonstrating the synergetic effect of Cu active sites and oxygen vacancies for WGS.

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