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Reverse water-gas shift reaction over Pt/MoOx/TiO2 : reverse Mars-van Krevelen mechanism via redox of supported MoOx

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Title: Reverse water-gas shift reaction over Pt/MoOx/TiO2 : reverse Mars-van Krevelen mechanism via redox of supported MoOx
Authors: Mine, Shinya Browse this author
Yamaguchi, Taichi Browse this author
Ting, Kah Wei Browse this author
Maeno, Zen Browse this author →KAKEN DB
Siddiki, S. M. A. Hakim Browse this author →KAKEN DB
Oshima, Kazumasa Browse this author →KAKEN DB
Satokawa, Shigeo Browse this author
Shimizu, Ken-ichi Browse this author →KAKEN DB
Toyao, Takashi Browse this author →KAKEN DB
Issue Date: 21-Jun-2021
Publisher: Royal Society of Chemistry
Journal Title: Catalysis science and technology
Volume: 11
Issue: 12
Start Page: 4172
End Page: 4180
Publisher DOI: 10.1039/d1cy00289a
Abstract: The reverse water-gas shift (RWGS) reaction is a promising catalytic route for reducing CO2 emissions because its product, CO, is a key intermediate in various industrialized catalytic processes that produce fuels and chemicals. We describe herein a MoOx/TiO2-supported Pt catalyst (Pt(3)/MoOx(15)/TiO2; Pt loading = 3 wt%, MoO3 loading = 15 wt%) that promotes the RWGS reaction at low temperature (200-300 degrees C) with high activity and selectivity. The catalytic performance for both CO2 conversion and selectivity of Pt(3)/MoOx(15)/TiO2 is better than those of Pt catalysts on other supports and other metal catalysts supported on MoOx(15)/TiO2, as well as Cu- and Fe-Cr-based industrial catalysts. Moreover, results of operando X-ray absorption spectroscopy studies show that the reaction takes place via the reverse Mars-van Krevelen mechanism where H-2 acts as a reducing agent to create oxygen vacancies on the supported Mo oxide species that are filled by CO2 as an oxidizing agent.
Type: article (author version)
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鳥屋尾 隆

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