Title:
METHOD FOR PRODUCING TETRAHYDROFURAN
Document Type and Number:
WIPO Patent Application WO/2013/005750
Kind Code:
A1
Abstract:
The present invention is a method that is for producing tetrahydrofuran and that produces tetrahydrofuran by supplying a starting material 1,4-butanediol containing gamma-butyrolactone to a reaction tank and performing a cyclodehydration reaction in the presence of a homogeneous acid catalyst having a pKa of no greater than 4 and able to dissolve in 1,4-butanediol, wherein a gas containing water, the gamma-butyrolactone, and the tetrahydrofuran in the reaction tank is introduced to a heat exchanger, obtaining a condensed liquid at the exit of the heat exchanger, at which point the ratio of the concentration of gamma-butyrolactone in the condensed liquid to the concentration of the gamma-butyrolactone in the starting material 1,4-butanediol is 20-100%.
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Inventors:
IZAWA YUSUKE
UTSUNOMIYA MASARU
HATTORI EIJI
UTSUNOMIYA MASARU
HATTORI EIJI
Application Number:
PCT/JP2012/067013
Publication Date:
January 10, 2013
Filing Date:
July 03, 2012
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
IZAWA YUSUKE
UTSUNOMIYA MASARU
HATTORI EIJI
IZAWA YUSUKE
UTSUNOMIYA MASARU
HATTORI EIJI
International Classes:
C07D307/08; C07B61/00
Domestic Patent References:
| WO2001044148A1 | 2001-06-21 |
Foreign References:
| JPH0753538A | 1995-02-28 |
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
Yuriko Hamada (JP)
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