Deactivation factor of CuCl2-KCl/Al2O3 catalyst for ethylene oxychlorination in a commercial-scale plant

Tomokazu Ohashi, Sae Someya, Yoshihiko Mori, Tetsuo Asakawa, Makoto Hanaya, Motohiro Oguri, Ryo Watanabe, Choji Fukuhara

Research output: Contribution to journalArticle

Abstract

Ethylene oxychlorination over a CuCl2-KCl/Al2O3 catalyst was examined for 2 consecutive years in a commercial-scale plant. The oxychlorination performance of the CuCl2-KCl/Al2O3 catalyst deteriorated gradually, which could seriously affect stable operation. To clarify such deactivation factors, the relationship between catalyst performance and physicochemical property change was investigated using X-ray fluorescence, electron probe microanalysis, and Brunauer–Emmett–Teller measurements. Sublimation of the CuCl component and subsequent increment of the ratio of K to Cu components were observed at the inlet of the catalyst bed, and were determined to be contributing factors in the deactivation of the CuCl2-KCl/Al2O3 catalyst.

Original languageEnglish
Article number117205
JournalApplied Catalysis A: General
Volume589
DOIs
Publication statusPublished - 2020 Jan 5

Keywords

  • Copper chloride
  • Deactivation factor
  • Oxychlorination
  • Vinyl chloride monomer

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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