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

研究成果: Article


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.

ジャーナルApplied Catalysis A: General
出版物ステータスPublished - 2020 1 5

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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