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:
May. 17, 1977
Filed:
Jan. 19, 1976
Applicant:
Inventor:
Dennis P McArthur, Yorba Linda, CA (US);
Assignee:
Union Oil Company of California, Los Angeles, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ; 252432 ; 252373 ; 4232132 ; 4232135 ; 2606 / ; 2606 / ; 260673 ; 2606 / ; 2606 / ; 208 16 ; 208133 ; 208209 ; 2082 / ;
Abstract
Certain crystalline aluminum borate catalyst supports containing about 8-25 weight-percent of B.sub.2 O.sub.3 are found to provide unusually stable and active catalysts for high-temperature chemical conversions, particularly exhaust gas conversion, when prepared by precalcining shaped composites of alumina and boria at temperatures between about 1250.degree. and 2600.degree.F, prior to the addition thereto of active metal or metals. Calcination at below 1250.degree. F is found to yield amorphous catalysts of inferior activity, while at temperatures above 2600.degree. F drastic reductions in surface area may occur.