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Title:
METHOD FOR PRODUCING CARBOXYLIC ACID AND CARBOXYLIC ACID ANHYDRIDE
Document Type and Number:
Japanese Patent JP2002226425
Kind Code:
A
Abstract:

To provide a method for producing a carboxylic acid or a carboxylic acid anhydride by which the same level as that of a conventional rate of reaction can be maintained, the formation of by-products other than the objective product can be suppressed and the decomposition rate of a catalyst can be suppressed to prolong the catalyst life.

This method for producing the carboxylic acid and the carboxylic acid anhydride comprises carrying out carbonylating reaction of a raw material to be carbonylated with carbon monoxide in the presence of a fixed catalyst for the carbonylating reaction and an alkyl iodide in a reactional solvent. The fixed catalyst for the carbonylating reaction is a solid catalyst for the carbonylating reaction produced by using a resin carrier having a porous cross linked structure containing a nitrogen-containing ring and a salt of a group VIII metal and the amount of the group VIII metal supported on the resin carrier is 1.0-10.0 wt.%. The method for the production is carried out in a reactor of a flow system and the temperature of a reactor is set at ≤160°C. The water concentration at the outlet of the reactor is set so as to satisfy 0.3 wt.%≤H2O≤10 wt.%.


Inventors:
YONEDA NORIYUKI
UEDA KAZUAKI
KUSANO AKIRA
HIRAO YOSHIFUMI
Application Number:
JP2001029125A
Publication Date:
August 14, 2002
Filing Date:
February 06, 2001
Export Citation:
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Assignee:
CHIYODA CHEM ENG CONSTRUCT CO
International Classes:
B01J32/00; B01J35/10; C07B41/08; C07B61/00; C07C51/12; C07C53/08; C07C53/12; B01J31/22; (IPC1-7): C07C51/12; B01J31/22; B01J32/00; B01J35/10; C07B41/08; C07C53/08; C07C53/12
Domestic Patent References:
JPH07265708A1995-10-17
JPH10245360A1998-09-14
JPH05306253A1993-11-19
JPH09124544A1997-05-13
Attorney, Agent or Firm:
Hideo Sarada (1 outside)