Title:
水素化触媒
Document Type and Number:
Japanese Patent JP4920616
Kind Code:
B2
Abstract:
Hydrogenation catalysts comprising metallic palladium supported on activated carbon, wherein less than 50% by weight of the palladium is comprised within a surface layer with a depth of up to 50 microns, the remainder being comprised in a layer between 50 and 400 microns deep. The catalysts can be used in particular in purifying terephthalic acid obtained by oxidation of p-xylene. They are prepared by dry impregnation of the support.
Inventors:
Marinella Maren Touch
Luigi Kabari
Carlo rubini
Luigi Kabari
Carlo rubini
Application Number:
JP2008050668A
Publication Date:
April 18, 2012
Filing Date:
February 29, 2008
Export Citation:
Assignee:
SUD CHEMIE MT S.r.l.
International Classes:
B01J23/44; B01J21/00; B01J37/02; B01J21/18; B01J23/00; B01J23/46; B01J23/89; B01J35/10; B01J37/025; C01B31/08; C02F1/00; C02F1/58; C02F1/72; C07B61/00; C07C51/42; C07C51/487; C07C63/26; B01J35/00
Domestic Patent References:
| JP7505085A | ||||
| JP9263566A |
Attorney, Agent or Firm:
Shintaro Nogawa