Active Site Dependent Reaction Mechanism over Ru/CeO 2 Catalyst toward CO 2 Methanation
Beijing University of Chemical Technology · Sinopec (China) · +3 more institutions
Abstract
Oxygen vacancy on the surface of metal oxides is one of the most important defects which acts as the reactive site in a variety of catalytic reactions. In this work, operando spectroscopy methodology was employed to study the CO2 methanation reaction catalyzed by Ru/CeO2 (with oxygen vacancy in CeO2) and Ru/α-Al2O3 (without oxygen vacancy), respectively, so as to give a thorough understanding on active site dependent reaction mechanism. In Ru/CeO2 catalyst, operando XANES, IR, and Raman were used to reveal the generation process of Ce(3+), surface hydroxyl, and oxygen vacancy as well as their structural evolvements under practical reaction conditions. The steady-state isotope transient kinetic analysis…
Citation impact
- FWCI
- 22.43
- Percentile
- 100%
- References
- 47
Authors
8- FWFei WangCorresponding
Beijing University of Chemical Technology
- SHShan He
Beijing University of Chemical Technology
- HCHao Chen
Beijing University of Chemical Technology
- BWBin Wang
Sinopec (China), Beijing Chemical Industry Research Institute (China)
- LZLirong Zheng
Chinese Academy of Sciences, Institute of High Energy Physics
Topics & keywords
- Methanation
- Catalysis
- Chemistry
- Formate
- Vacancy defect
- Photochemistry
- Inorganic chemistry
- Dissociation (chemistry)