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Reverse water-gas shift reaction over Pt/MoOx/TiO2 : reverse Mars-van Krevelen mechanism via redox of supported MoOx
| 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) |
| URI: | http://hdl.handle.net/2115/86024 |
| 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)
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Submitter: 鳥屋尾 隆
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