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:
Jun. 11, 1985
Filed:
Jul. 13, 1983
Applicant:
Inventors:
Georg Grigoleit, Dorsten, DE;
Rudolf Oberkobusch, Duisburg, DE;
Jurgen Stadelhofer, Dortmund, DE;
Kurt Matern, Duisburg, DE;
Assignee:
Rutgerswerke Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546252 ; 546250 ;
Abstract
The catalytic dehydrogenation of piperidine to pyridine in the gas phase using hydrogen as the carrier gas is carried out with a silicon dioxide carrier activated with copper, nickel and chromium as the catalyst, the metals copper, nickel and chromium being present in an amount of 5-12:1-5:0.1-<0.7 parts by weight per 100 parts by weight of catalyst. The optimum hydrogen/piperidine molar ratio is 5:1, and purified and dried conversion gas from the dehydrogenation reaction is preferably recycled and used as the hydrogen.