Synthetic method and synthetic system

Patent metadata

Field	Value
Publication number	US-2020095692-A1
Application number	US-201816141201-A
Country	US
Kind code	A1
Filing date	Sep 25, 2018
Priority date	Sep 25, 2018
Publication date	Mar 26, 2020
Grant date	—

Abstract

Provided is a synthesis method comprising a first step of producing a carbonate compound from carbon monoxide and an alcohol-based compound at an anode of a first electrochemical cell comprising a cathode and the anode, and a second step of synthesizing a first product by a dealcoholization reaction of the carbonate compound, wherein an alcohol-based compound eliminated in the second step is recycled in the first step.

First claim

1 . A synthesis method comprising:
a first step of producing a carbonate compound from carbon monoxide and an alcohol-based compound at a side of an anode of a first electrochemical cell comprising a cathode and the anode; and a second step of synthesizing a first product by a dealcoholization reaction of the carbonate compound,
wherein an alcohol-based compound eliminated in the second step is recycled in the first step.

2 . The synthesis method according to claim 1 , wherein the carbonate compound is at least one selected from the group consisting of dimethyl carbonate, diethyl carbonate, ethylene carbonate, dipropyl carbonate, propylene carbonate, ethyl methyl carbonate, methyl propyl carbonate, ethyl propyl carbonate and diphenyl carbonate.

3 . The synthesis method according to claim 1 , wherein the first product is synthesized by a dealcoholization condensation reaction of the carbonate compound with at least one selected from the group consisting of a diol-based compound and a diamine-based compound, in the second step.

4 . The synthesis method according to claim 3 , wherein the first product is at least one selected from the group consisting of compounds represented by the following formulae (4-1) and (5-1):

wherein R 1 and R 2 each independently represent an organic group having 1 to 30 carbon atoms.

5 . The synthesis method according to claim 3 , wherein the first product is a polymer having at least any of repeating units represented by the following formulae (4-2) and (5-2):

wherein R 1 and R 2 each independently represent an organic group having 1 to 30 carbon atoms.

6 . The synthesis method according to claim 1 , wherein
the second step is performed in a first reactor, the method further comprises a third step of synthesizing a second product by a further dealcoholization reaction of the first product in a second reactor that is a separate reactor from the first reactor, and an alcohol-based compound eliminated in the third step is recycled in the first step.

7 . The synthesis method according to claim 6 , wherein the second product is a polymer having at least any of repeating units represented by the following formulae (4-2) and (5-2):

wherein R 1 and R 2 each independently represent an organic group having 1 to 30 carbon atoms.

8 . The synthesis method according to claim 1 , wherein at least a part of the carbon monoxide is produced by reduction of carbon dioxide at the side of the cathode of the first electrochemical cell.

9 . The synthesis method according to claim 1 , wherein at least a part of the carbon monoxide is produced at a side of a cathode of a second electrochemical cell that is a separate electrochemical cell from the first electrochemical cell.

10 . A synthesis system comprising:
a first electrochemical cell comprising a cathode and an anode, wherein the anode comprises a catalyst that catalyzes a reaction for production of a carbonate compound from carbon monoxide and an alcohol-based compound; a first gas feed line that feeds carbon monoxide to the side of the anode of the first electrochemical cell; a first reactor that produces a first product by a dealcoholization reaction of the carbonate compound; and a circulation line configured so as to enable the carbonate compound produced at the side of the anode of the first electrochemical compartment to be fed to the first reactor and enable an alcohol-based compound eliminated in the first reactor to be fed to the side of the anode of the first electrochemical cell.

11 . The synthesis system according to claim 10 , comprising:
a second reactor that produces a second product by a dealcoholization reaction of the first product produced in the first reactor; and a feed pathway that feeds an alcohol-based compound eliminated in the second reactor, to the side of the anode of the first electrochemical cell.

12 . The synthesis system according to claim 10 , comprising a second gas feed line that feeds carbon dioxide to the side of the cathode of the first electrochemical cell, wherein
the cathode of the first electrochemical cell comprises a catalyst that reduces carbon dioxide to carbon monoxide; and the first gas feed line is a connecting path that connects the side of the cathode of the first electrochemical cell to the side of the anode thereof.

13 . The synthesis system according to claim 10 , comprising:
a second electrochemical cell comprising a cathode and an anode, wherein the cathode comprises a catalyst that reduces carbon dioxide to carbon monoxide; and a third gas feed line that feeds carbon dioxide to the side of the cathode of the second electrochemical cell,
wherein the first gas feed line is a connecting path that connects the side of the cathode of the second electrochemical cell and the side of the anode of the first electrochemical cell.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• Fujinuma Naohiro
• Shinmei Kenichi

Classifications

• C08G71/00

  Macromolecular compounds obtained by reactions forming a ureide or urethane link, otherwise, than from isocyanate radicals in the main chain of the macromolecule · CPC title

• C08G64/305

  and alcohols · CPC title

• C25B15/08

  Supplying or removing reactants or electrolytes; Regeneration of electrolytes · CPC title

• C08G64/307

  and phenols · CPC title

• C08G64/0208

  saturated · CPC title