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

Mine, Shinya; Yamaguchi, Taichi; Ting, Kah Wei et al.

Catalysis science and technology, 2021, 11(12), 4172-4180

Permalink : https://hdl.handle.net/2115/86024

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アクセス権
open access
URI
https://hdl.handle.net/2115/86024
タイトル
Reverse water-gas shift reaction over Pt/MoOx/TiO2 : reverse Mars-van Krevelen mechanism via redox of supported MoOx
著者
Mine, Shinya ; Yamaguchi, Taichi ; Ting, Kah Wei ; Maeno, Zen ; Siddiki, S. M. A. Hakim ; Oshima, Kazumasa ; Satokawa, Shigeo ; Shimizu, Ken-ichi ; Toyao, Takashi
著者名
Mine, Shinya
著者名
Yamaguchi, Taichi
著者名
Ting, Kah Wei
e-Rad_Researcher
30721154
著者名
Maeno, Zen
e-Rad_Researcher
60722650
著者名
Siddiki, S. M. A. Hakim
e-Rad_Researcher
60734275
著者名
Oshima, Kazumasa
著者名
Satokawa, Shigeo
e-Rad_Researcher
60324000
著者名
Shimizu, Ken-ichi
e-Rad_Researcher
80775388
著者名
Toyao, Takashi
言語
英語
発行日
2021-06-21
出版者
Royal Society of Chemistry
収録物名
Catalysis science and technology
巻(号)
11(12)
ページ
4172-4180
抄録
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.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
2044-4753
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1039/d1cy00289a