Title:
【発明の名称】無水酢酸又は無水酢酸及び酢酸の製造方法
Document Type and Number:
Japanese Patent JP3500150
Kind Code:
B2
Abstract:
A process for producing acetic anhydride alone or both of acetic anhydride and acetic acid by the reaction of methyl acetate and/or dimethyl ether and, as optional component(s), water and/or methanol with carbon monoxide alone or both of carbon monoxide and hydrogen in the presence of a rhodium compound and methyl iodide as the principal catalysts, wherein trace impurities causative of tar generation is removed by separating the same through distillation in the evaporator and/or in the subsequent refining step, thus reducing the generation of the tar which otherwise turns into a contaminant.
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Inventors:
Yoshiaki Morimoto
Hiroto Tanikawa
Kazuyuki Akita
Hiroto Tanikawa
Kazuyuki Akita
Application Number:
JP50340695A
Publication Date:
February 23, 2004
Filing Date:
August 16, 1994
Export Citation:
Assignee:
Daicel Chemical Industry Co., Ltd.
International Classes:
C07C51/12; C07C51/44; C07C51/56; C07C51/573; (IPC1-7): C07C51/12; C07C51/44; C07C51/54; C07C51/56; C07C51/573; C07C53/08; C07C53/12
Domestic Patent References:
| JP4295445A | ||||
| JP6369719A |
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)