Structural analysis of reduced molybdenum oxide catalyst for light-assisted reverse water-gas shift reaction.

• Naito Shintaro

  Osaka University

• Kuwahara Yasutaka

  Osaka University Elements Strategy Initiative for Catalysts and Batteries, Kyoto University JST PRESTO

• Kusu Kazuki

  Osaka University

• Yamashita Hiromi

  Osaka University Elements Strategy Initiative for Catalysts and Batteries, Kyoto University

Bibliographic Information

Other Title

• 光アシスト逆シフト反応における還元型モリブデン酸化物触媒の構造解析

Abstract

Reduced molybdenum oxide (H_xMoO_3-y) obtained through hydrogen reduction of MoO₃ has two distinctive properties. One is abundant oxygen vacancies and another is strong absorption of visible light. The application of these features to the catalytic reactions is being investigated. In this study, the structures of the catalyst under the reaction conditions were investigated by using in-situ XAFS and in-situ UV-vis measurements. The activity of the reverse water gas shift reaction was enhanced depending on the amount of oxygen vacancies, and in-situ XAFS measurement results suggest that the reaction proceeds via a reversible redox behavior of oxygen vacancies. In addition, the activity of the reaction under visible light irradiation increased more than two-fold, and the in-situ UV-vis measurement results suggest that the increase in the visible light region is due to the plasmon-originated light absorption.

Journal

• Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science

  Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2021 (0), 2Da12S-, 2021

  The Japan Society of Vacuum and Surface Science

Details

• CRID: 1390009018100178560
• NII Article ID: 130008134156
• DOI: 10.14886/jvss.2021.0_2da12s
• ISSN: 24348589
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed