Title:
REGENERATION OF BETA-ZEOLITE CATALYST
Document Type and Number:
Japanese Patent JP3853003
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To regenerate β-zeolite, which is used as a catalyst in production of an alkylbenzene useful as an organic intermediate material for various kinds of polymer raw materials, to recover the initial activity when the activity is lowered due to a long time use.
SOLUTION: Re-activation of a β-zeolite catalyst, which is used in a liquid- phase or a gas-liquid mixed-phase alkylation reaction using benzene containing cyclopentadiene or cyclopentadiene together with dicyclopentadiene in not higher than 5ppm by weight in total as raw material benzene is carried out by cleaning with benzene similarly containing cyclopentadiene or cyclopentadiene together with dicyclopentadiene in not higher than 5ppm in total. Consequently, the β-zeolite catalyst whose activity is lowered by alkylation reaction of benzene can be completely reactivated by a simple method.
Inventors:
Yoshikazu Takamatsu
Hiroshi Ishida
Hiroshi Ishida
Application Number:
JP1766197A
Publication Date:
December 06, 2006
Filing Date:
January 17, 1997
Export Citation:
Assignee:
Asahi Kasei Chemicals Corporation
International Classes:
B01J29/70; B01J38/56; B01J29/90; C07B61/00; C07C2/66; C07C15/02; (IPC1-7): B01J38/56; B01J29/70; B01J29/90; C07B61/00; C07C2/66; C07C15/02
Domestic Patent References:
| JP3500891A | ||||
| JP5138034A | ||||
| JP8281118A | ||||
| JP10504343A |
Foreign References:
| US5118897 | ||||
| WO1996004225A1 |
Attorney, Agent or Firm:
Takeshi Shimizu
Joi Ito
Hideo Takei
Yoshio Narui
Joi Ito
Hideo Takei
Yoshio Narui
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