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:
Feb. 07, 1989
Filed:
Mar. 24, 1987
Applicant:
Inventors:
Kohei Sarumaru, Ami, JP;
Etsuji Yamamoto, Ami, JP;
Assignee:
Mitsubishi Petrochemical Company Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502205 ; 502214 ; 502249 ; 502311 ;
Abstract
In the production of a Mo-Bi-Na composite oxide catalyst by the process comprising incorporating compounds as respective element sources into a composite and subjecting the composite to heating treatment in an aqueous system, bismuth oxide and/or bismuth subcarbonate are/is used as a Bi source copmpound and at least a part of the heat treatment is conducted at a temperature of 450.degree. to 600.degree. C. The activity of the catalyst is significantly improved by introducing Bi in the form of the specified water insoluble compound into the catalyst.