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. 07, 1990
Filed:
Nov. 28, 1988
Yutaka Sasaki, Kanagawa, JP;
Hiroshi Utsumi, Kanagawa, JP;
Masato Otani, Kanagawa, JP;
Shinji Yamamoto, Kanagawa, JP;
Nitto Chemical Industry Co., Ltd., Tokyo, JP;
Abstract
A phosphorus-antimony-containing catalyst for oxidation, which is obtained by calcining a metal oxide composition containing as essential components, (a) antimony, (b) at least one element selected from the group consisting of iron, cobalt, nickel, tin, uranium, chromium, copper, manganese, titanium, thorium, and cerium, and (c) silica, at a temperature ranging from 500.degree. C. to 950.degree. C. to prepare a base catalyst, impregnating the base catalyst with a solution containing a phosphorus compound so that the atomic ratio of impregnated phosphorus to antimony the base catalyst is within the range of from 0.01:1 to 2:1, drying the impregnated base catalyst, and calcining the dried product at a temperature ranging from 300.degree. C. to 850.degree. C. The catalyst exhibits satisfactory activity and strength and can be prepared with satisfactory reproducibility.