CuxRu1-x catalysts for carbon neutralization with CH4 or CO production

Bo Huang, Yuhan Liu, Hirokazu Kobayashi, Zhe Tan, Tomokazu Yamamoto, Takaaki Toriyama, Syo Matsumura, Shogo Kawaguchi, Yoshiki Kubota, Hong Zheng, Hiroshi Kitagawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

CO2 methanation is a promising large-scale carbon neutralization process for industrial exhaust gases. However, the moderate activities of catalysts to date have always limited large-scale practical applications of CO2 methanation. Solid solutions with abundant active sites and adjustable electronic states are good candidates for achieving higher activities. Here, we developed a carbon neutralization platform system and synthesized CuxRu1-x solid solutions for CO2 methanation by coreduction methodology. Among them, Cu0.05Ru0.95 showed the best CO2 methanation activity, outperforming the best monometallic catalyst Ru. The origin of excellent activity was attributed to the rapid CO2 asymmetric dissociation on Cu-Ru dual-atom sites. Furthermore, anomalous electron transfer from Ru to Cu was found, resulting in high electron density in Cu-atom sites, which mainly induced the rapid CO2 dissociation for CuxRu1-x solid solutions. In addition, the Cu0.7Ru0.3 solid solution had high intrinsic activity for CO2 hydrogenation and 100% CO selectivity.

Original languageEnglish
Article number100705
JournalChem Catalysis
Volume3
Issue number8
DOIs
Publication statusPublished - Aug 17 2023

All Science Journal Classification (ASJC) codes

  • Chemistry (miscellaneous)
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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