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.

Understanding Active Sites in the Water–Gas Shift Reaction for Pt–Re Catalysts on Titania

ACS Catalysis ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2597-2606 ◽  
Author(s):  
Audrey S. Duke ◽  
Kangmin Xie ◽  
Amy J. Brandt ◽  
Thathsara D. Maddumapatabandi ◽  
Salai C. Ammal ◽  
...  
Keyword(s):  
Active Sites ◽  
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.

Identification of relevant active sites and a mechanism study for reverse water gas shift reaction over Pt/CeO 2 catalysts

2016 ◽  
Vol 25 (6) ◽  
pp. 1051-1057 ◽  
Author(s):  
Xiaodong Chen ◽  
Xiong Su ◽  
Binglian Liang ◽  
Xiaoli Yang ◽  
Xinyi Ren ◽  
...  
Keyword(s):  
Active Sites ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Mechanism Study ◽  
Reverse Water Gas Shift ◽  
Shift Reaction ◽  
Water Gas

Metallic Pt as active sites for the water–gas shift reaction on alkali-promoted supported catalysts

2012 ◽  
Vol 286 ◽  
pp. 279-286 ◽  
Author(s):  
Jorge H. Pazmiño ◽  
Mayank Shekhar ◽  
W. Damion Williams ◽  
M. Cem Akatay ◽  
Jeffrey T. Miller ◽  
...  
Keyword(s):  
Active Sites ◽  
Supported Catalysts ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Shift Reaction ◽  
Water Gas

scholarly journals Active and Stable MgAl2O4 and Ni(SA)/MgAl2O4 Catalysts for the Reverse Water Gas Shift Reaction

2021 ◽  
Author(s):  
Lingling Zhang ◽  
Qi Song ◽  
Yimeng Xing ◽  
Zhichun Si ◽  
Yuxiang Liu ◽  
...  
Keyword(s):  
Active Sites ◽  
Noble Metals ◽  
Water Gas Shift ◽  
High Price ◽  
Water Gas Shift Reaction ◽  
Durability Test ◽  
Adsorption Sites ◽  
Reverse Water Gas Shift ◽  
Shift Reaction ◽  
Water Gas

Reverse water gas shift reaction (RWGS) is an important process which plays a vital role in many CO2 utilization related reactions. Noble metals are the most active catalysts in RWGS, but the high price and low reserve strangled their applications. In the present work, we reported a non-transition-metal MgAl2O4 catalyst which showed outstanding activity and stability at high temperatures in the RWGS reaction and improved performance after doping of single atomic Nin+. The catalyst can obtain 46% of CO2 conversion in durability test of 75 h at 800 °C under high weight hourly space velocities (225 000 ml g-1 h-1). The adsorption sites, possible reaction route, and effects of Nin+ single atoms on the (111) surface of MgAl2O4 for RWGS were investigated by in situ DRIFTS and DFT calculations. The results indicated that the rate determining reaction step of RWGS on MgAl2O4 and Ni (SA)/MgAl2O4 were both the reaction of OH* + H* → H2O* + *, but the energy barrier was significantly reduced after introducing single atomic Nin+. Nin+ atoms can increase the hydroxyl coverage on the surface of catalyst and Al3+ sites near the Nin+ ion are considered as the predominant active sites for RWGS reactions.

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