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

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Keywords

Copper chloride
Deactivation factor
Oxychlorination
Vinyl chloride monomer

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Cite this

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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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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AU - Ohashi, Tomokazu

AU - Someya, Sae

AU - Mori, Yoshihiko

AU - Asakawa, Tetsuo

AU - Hanaya, Makoto

AU - Oguri, Motohiro

AU - Watanabe, Ryo

AU - Fukuhara, Choji

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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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Access to Document

10.1016/j.apcata.2019.117205