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

doi:10.1016/j.apcata.2019.117205

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

School of Advanced Science and Engineering

Research output: Contribution to journal › Article

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 language	English
Article number	117205
Journal	Applied Catalysis A: General
Volume	589
DOIs	https://doi.org/10.1016/j.apcata.2019.117205
Publication status	Published - 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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Ohashi, T., Someya, S., Mori, Y., Asakawa, T., Hanaya, M., Oguri, M., Watanabe, R., & Fukuhara, C. (2020). Deactivation factor of CuCl₂-KCl/Al₂O₃ catalyst for ethylene oxychlorination in a commercial-scale plant. Applied Catalysis A: General, 589, [117205]. https://doi.org/10.1016/j.apcata.2019.117205

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

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.",

keywords = "Copper chloride, Deactivation factor, Oxychlorination, Vinyl chloride monomer",

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

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T1 - Deactivation factor of CuCl2-KCl/Al2O3 catalyst for ethylene oxychlorination in a commercial-scale plant

AU - Ohashi, Tomokazu

AU - Someya, Sae

AU - Mori, Yoshihiko

AU - Asakawa, Tetsuo

AU - Hanaya, Makoto

AU - Oguri, Motohiro

AU - Watanabe, Ryo

AU - Fukuhara, Choji

PY - 2020/1/5

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N2 - 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.

AB - 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.

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KW - Deactivation factor

KW - Oxychlorination

KW - Vinyl chloride monomer

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