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:
Jan. 13, 1976
Filed:
Jul. 02, 1971
Applicant:
Inventors:
Yoshizo Minato, Nishinomiya, JA;
Shinichi Yasuda, Otsu, JA;
Assignee:
Koei Chemical Company, Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2602 / ; 252435 ;
Abstract
Alkylpyridines such as 2-picoline and 4-picoline are prepared by contacting acetaldehyde and ammonia in a gaseous phase with a phosphate of two metals such as cobalt magnesium phosphate, cobalt aluminum phosphate or lead aluminum phosphate, impregnated with an aqueous solution of phosphoric acid or ammonium phosphate, as a catalyst, at a temperature of 350.degree. to 500.degree.C and a space velocity of 200 to 2,000 Hr.sup.-.sup.1. Silica-alumina and a promoter can be added to the catalyst. The impregnated catalyst has a higher catalytic activity and holds the initial high activity even after a considerable number of regeneration.