METHOD FOR PRODUCING ESTER

Title:

METHOD FOR PRODUCING ESTER

Document Type and Number:

Japanese Patent JP2012214387

Kind Code:

A

Abstract:

To provide a highly efficient esterification reaction process using a separatory membrane improved in dehydration ability and durability.

A method for producing an ester is provided, comprising the following process: in a reactor containing a reaction solution, a carboxylic acid and an alcohol are reacted with each other in the presence of a catalyst, along with removing water formed by the reaction using a separator having a separatory membrane supported on a porous substrate, wherein the separatory membrane is e.g. a CHA-type zeolite membrane or NaA-type zeolite one, and a pressure-reducing operation for removing water from the reaction system is started ≥10 min after the reaction solution is started to be heated or after the temperature of the solution comes to its boiling point. By this method, the esterification reaction process can be made small in scale, along with significantly decreasing the frequency of maintenance such as separatory membrane's exchange.

Inventors:

HASEGAWA YASUHISA
HANAOKA TAKAMASA
MIZUKAMI FUJIO
KOBATA YASUNORI

Application Number:

JP2011079143A

Publication Date:

November 08, 2012

Filing Date:

March 31, 2011

Export Citation:

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Assignee:

AIST
NIPPON SURFACTANT KOGYO KK

International Classes:

C07C67/08; B01D61/36; B01D69/10; B01D71/02; C07C69/24; C07C69/44; C07C69/50; C07B61/00

Domestic Patent References:

JP2011016123A	2011-01-27
JP2002047213A	2002-02-12
JPH10114686A	1998-05-06
JPH05168865A	1993-07-02
JP2005095782A	2005-04-14
JP2002003445A	2002-01-09
JPS63162003A	1988-07-05

Foreign References:

WO1998011050A1

1998-03-19

Attorney, Agent or Firm:

Masahiko Sudo

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