Title:
RANEY CATALYST, ITS PRODUCTION AND PRODUCTION OF SUGAR-ALCOHOL BY USING THE CATALYST
Document Type and Number:
Japanese Patent JP3793267
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a Raney catalyst for a fixed bed, which is high in initial activity and endurable to use for a long period, and to produce a high purity sugar-alcohol at a low cost by using a Raney catalyst.
SOLUTION: The lump Raney catalyst produced by (a) a 1st process for melting nickel and aluminum, (b) a 2nd process for obtain a quenched lump alloy by quenching small drops of the molten material and (c) a 3rd process for classifying the quenched lump alloy as it is or after pulverizing once and activating is recovered after used for hydrogen addition reaction under a hydrogen pressure. The recovered Raney nickel is finely pulverized and reactivated and the sugar-alcohol is produced by executing hydrogen addition reaction using the Raney catalyst under a hydrogen pressure.
Inventors:
Shimazu Koshiro
Yoshiaki Tateno
True pattern Mitsuo
Okamoto Naoki
Takao Oshima
Nagasawa Minoru
Hideki Sakamura
Yoshiaki Tateno
True pattern Mitsuo
Okamoto Naoki
Takao Oshima
Nagasawa Minoru
Hideki Sakamura
Application Number:
JP31372095A
Publication Date:
July 05, 2006
Filing Date:
November 08, 1995
Export Citation:
Assignee:
Towa Chemical Industry Co., Ltd.
Nikko Rika Co., Ltd.
Nikko Rika Co., Ltd.
International Classes:
B01J25/00; C07H15/04; B01J25/02; C07B61/00; C07C29/141; C07C29/145; C07C31/18; C07C31/26; (IPC1-7): B01J25/00; C07C29/141; C07C29/145; C07C31/18; C07C31/26; C07H15/04; //C07B61/00
Domestic Patent References:
| JP49007320B1 | ||||
| JP59189938A | ||||
| JP50044995A |
Attorney, Agent or Firm:
Keiichi Ota
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