METHOD OF REUSING HYDROGENATION CATALYST - NIPPON CATALYTIC CHEM IND

Title:

METHOD OF REUSING HYDROGENATION CATALYST

Document Type and Number:

Japanese Patent JP2004121968

Kind Code:

A

Abstract:

To provide a method of reusing hydrogenation catalyst which enables a hydrogenation catalyst to be reused without deteriorating catalytic activity and has high production efficiency.

This method for reusing a catalyst used in hydrogenation reaction is characterized in that it comprises a step to temporarily house the catalyst unseparated and/or separated from the reaction liquid in a storage vessel other than a reaction vessel, a step to keep at least one of oxygen and hydrogen of ≥0.001vol.% concentration in the gas phase of the storage vessel and/or to adjust the temperature in the storage vessel to be at a temperature of ≥40°C and make the value obtained by multiplying the temperature (°C) in the storage vessel by the time (hour) to be housed in the storage vessel to be ≤2,000.

Inventors:

NISHIBAYASHI HIDEYUKI
SASAKI MASAMITSU
KAKIMOTO YUKIHIKO

Application Number:

JP2002289156A

Publication Date:

April 22, 2004

Filing Date:

October 01, 2002

Export Citation:

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Assignee:

NIPPON CATALYTIC CHEM IND

International Classes:

C07D307/60; B01J38/10; B01J38/12; C07B61/00; (IPC1-7): B01J38/10; B01J38/12

Attorney, Agent or Firm:

Takehiko Matsumoto

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