Boosting reverse water-gas shift reaction activity of Pt nanoparticles through light doping of W

Daiya Kobayashi, Hirokazu Kobayashi, Kohei Kusada, Tomokazu Yamamoto, Takaaki Toriyama, Syo Matsumura, Shogo Kawaguchi, Yoshiki Kubota, Masaaki Haneda, Susan Meñez Aspera, Hiroshi Nakanishi, Shigebumi Arai, Hiroshi Kitagawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The reverse water-gas shift (RWGS) reaction is an important reaction from the viewpoint of converting CO2into CO as an important raw material compound. As the RWGS reaction is a mildly endothermic and competitive reaction with CO2methanation, it is important to improve the activity at low temperatures. Here, we report PtW nanoparticles (NPs) supported on γ-Al2O3(PtW NPs/Al2O3) in which Pt and W were randomly mixed for obtaining a highly active and selective catalyst for the RWGS. At low temperatures of 200 and 300 °C, PtW NPs/Al2O3exhibited 16- and 17-times higher activity than Pt/Al2O3, one of the most promising catalysts. The enhanced activity of PtW NPs originated from alloying Pt with W, which contributes to the sintering resistance of Pt NPs, and promotion of CO2adsorption and CO desorption on the catalyst. Furthermore, PtW NPs/Al2O3exhibited high durability and excellent catalytic performance.

Original languageEnglish
Pages (from-to)15613-15617
Number of pages5
JournalJournal of Materials Chemistry A
Volume9
Issue number28
DOIs
Publication statusPublished - Jul 28 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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