The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 1994
Filed:
May. 07, 1993
Applicant:
Inventors:
Assignee:
DSM N.V., , NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
568435 ; 568425 ; 568426 ; 502102 ; 502104 ;
Abstract
The invention relates to a catalyst that is very suitable for the conversion of a benzoic acid into the corresponding benzaldehyde. The catalyst can be obtained via coprecipitation of a manganese salt, a salt from which an acid support is formed, a zinc salt and optionally a copper salt at a pH between 4 and 10, calcination, after precipitation, of the coprecipitate at a temperature of between 300 and 700.degree. C. and then, optionally, reduction of the calcined coprecipitate with the aid of a hydrogen-containing gas mixture. Using such a catalyst the hydrogenation of a benzoic acid can be carried out at lower temperature resulting in energy-savings and, hence, cost-savings.