Title:
1,4―ブチンジオールの接触水素添加による1,4―ブタンジオールの製造法
Document Type and Number:
Japanese Patent JP3995719
Kind Code:
B2
Abstract:
A process for preparing 1,4-butanediol by continuous catalytic hydrogenation of 1,4-butynediol comprises reacting 1,4-butynediol with hydrogen in the liquid continuous phase in the presence of a heterogeneous hydrogenation catalyst at from 20 to 300° C., a pressure of from 1 to 200 bar and values of the liquid-side volumetric mass transfer coefficient kLa of from 0.1 s-1 to 1 s-1a) using a catalyst suspended in the reaction medium, where if a packed bubble column is employed this is operated in the upflow mode and at a ratio of gas leaving the reaction vessel to gas fed to the reaction vessel of from 0.99:1 to 0.4:1, orb) passing the liquid and gas in cocurrent in an upward direction through a fixed-bed reactor operated in the gas-circulation mode while maintaining a ratio of the gas fed to the reaction vessel to gas leaving the reaction vessel of from 0.99:1 to 0.4:1.
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| JPH0489482 | PRODUCTION OF 2-METHYLQUINOLINE |
Inventors:
Liner becker
Franz Josef Brecker
Gerd Kybel
Rolf Pincos
Joachim Wolff-Deering
Franz Josef Brecker
Gerd Kybel
Rolf Pincos
Joachim Wolff-Deering
Application Number:
JP51712598A
Publication Date:
October 24, 2007
Filing Date:
September 23, 1997
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
B01J25/02; C07C29/17; B01J8/02; B01J8/06; B01J10/00; B01J19/00; B01J19/24; B01J19/26; C07B61/00; C07C31/20
Domestic Patent References:
| JP61097235A | ||||
| JP63307832A |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel