Title:
METHOD FOR REGENERATING CATALYST AND METHOD FOR PRODUCING CARBONATE ESTER
Document Type and Number:
WIPO Patent Application WO/2019/065549
Kind Code:
A1
Abstract:
The present invention addresses the problem of achieving: a method for making it possible to reuse a catalyst for carbonate ester production by restoring activity to the catalyst with a simple procedure and without complicated steps such as firing; and a method for using said regenerated catalyst to produce carbonate ester at high yield. This problem is solved by a method for regenerating a catalyst containing CeO2, which is used in a carbonate ester generation reaction for generating carbonate ester from carbon dioxide and alcohol, wherein the method for regenerating the catalyst includes: (a) a separation step for separating the catalyst out as a crude catalyst from a reaction solution of carbon dioxide and alcohol; and (b) a catalyst treatment step for cleaning the crude catalyst with cleaning alcohol to make a purified catalyst.
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Inventors:
HARADA HIDEFUMI (JP)
ISOBE TAKEHIKO (JP)
LIU HONGYU (JP)
SHINKAI YOUSUKE (JP)
UMEZU RYOTARO (JP)
ISOBE TAKEHIKO (JP)
LIU HONGYU (JP)
SHINKAI YOUSUKE (JP)
UMEZU RYOTARO (JP)
Application Number:
PCT/JP2018/035250
Publication Date:
April 04, 2019
Filing Date:
September 25, 2018
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
B01J38/52; B01J23/92; C07C68/04; C07C69/96; C07B61/00
Domestic Patent References:
| WO1999006142A1 | 1999-02-11 | |||
| WO2015099053A1 | 2015-07-02 |
Foreign References:
| JP2012162523A | 2012-08-30 | |||
| JP2010077113A | 2010-04-08 | |||
| JP2012162523A | 2012-08-30 | |||
| JP2010077113A | 2010-04-08 |
Other References:
STOIAN, DRAGOS ET AL.: "Catalysis under microscope:Unraveling the mechanism of catalyst de-and re- activation in the continuous dimethyl carbonate synthesis from CO2 and methanol in the presence of a dehydrating agent", CATALYSIS TODAY, vol. 283, 2016, pages 2 - 10, XP029869018, DOI: 10.1016/j.cattod.2016.03.038
NAKAGAWA YOSHINAO ET AL.: "Synthesis of dimethyl carbonate from carbon dioxide and methanol by means of ceria catalyst in which nitrile is used as dehydrating-agent", PROCEEDINGS OF FORUM A OF 110TH CATALYSIS SOCIETY OF JAPAN MEETING, 2012, pages 145 - 146, XP009519573
ACS CATAL., vol. 4, no. 11, 2014, pages 3877 - 3880
CHEMSUSCHEM, vol. 6, 2013, pages 1341 - 1344
CATALYSIS TODAY, vol. 283, pages 2 - 10
NAKAGAWA YOSHINAO ET AL.: "Synthesis of dimethyl carbonate from carbon dioxide and methanol by means of ceria catalyst in which nitrile is used as dehydrating-agent", PROCEEDINGS OF FORUM A OF 110TH CATALYSIS SOCIETY OF JAPAN MEETING, 2012, pages 145 - 146, XP009519573
ACS CATAL., vol. 4, no. 11, 2014, pages 3877 - 3880
CHEMSUSCHEM, vol. 6, 2013, pages 1341 - 1344
CATALYSIS TODAY, vol. 283, pages 2 - 10
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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