触媒の再生方法、及び炭酸エステルの製造方法

Japanese Patent JP7136112

B2

Realized is a method for restoring the activity of a catalyst for producing a carbonate ester by a simple technique with no use of a complicated step such as calcining or the like to allow the catalyst to be reusable, and a method for producing a carbonate ester at a high yield by use of the catalyst thus regenerated. The above-described problem has been solved by a method for regenerating a catalyst containing CeO₂, the catalyst being usable for a carbonate ester generation reaction of generating a carbonate ester from carbon dioxide and an alcohol, the method comprising (a) a separation step of separating the catalyst as a crude catalyst from a reaction solution of carbon dioxide and the alcohol; and (b) a catalyst processing step of washing the crude catalyst with a washing alcohol to provide a purified catalyst.

Harada English
Takehiko Isobe
Liu Jonathan
Yosuke Shinkai
Ryotaro Umezu

JP2019545086A

September 13, 2022

September 25, 2018

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Mitsubishi Gas Chemical Co., Ltd.

B01J23/92; B01J23/10; B01J38/02; B01J38/52; B01J38/60; C07C68/04; C07C69/96

JP2012162523A
JP2010077113A

WO1999006142A1

STOIAN, Dragos et al.,Catalysis under microscope: Unraveling the mechanism of catalyst de- and re-activation in the contin,Catalysis Today,2016年,vol. 283,p. 2-10, Supplementary Information,特に、2.1, 2.2, 3.2, Table S1
中川善直ほか,ニトリル類を脱水剤に用いたセリア触媒による二酸化炭素とメタノールからの炭酸ジメチル合成,第110回触媒討論会 討論会A予稿集,2012年,p. 145-146,特に、p. 146右欄

Hiroshi Kobayashi
Kyoei Sugiyama
Taro Ushio
Yasuhito Suzuki

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