Formation of carbonate on Ag(111) under exposure to ethylene and oxygen gases evidenced by near ambient pressure XPS and NEXAFS

Kazuhisa Isegawa, Kohei Ueda, Satoru Hiwasa, Kenta Amemiya, Kazuhiko Mase, Hiroshi Kondoh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The active oxygen species for ethylene epoxidation on Ag surfaces has been a long-standing issue. We conducted in situ observations of Ag(111) surfaces under exposure to ethylene and oxygen gases with near ambient pressure (NAP) X-ray photo-electron spectroscopy and near-edge X-ray absorption fine structure spectroscopy. Combined results of these spectroscopies evidence that a carbonate species with a flat-lying configuration is formed on the Ag(111) surface at 370500 K under exposure to the NAP gas mixture of ethylene and oxygen.

Original languageEnglish
Pages (from-to)159-162
Number of pages4
JournalChemistry Letters
Volume48
Issue number2
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • Ethylene epoxidation
  • NAP-XPS
  • Silver single crystal

ASJC Scopus subject areas

  • Chemistry(all)

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