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. 20, 1979
Filed:
Apr. 12, 1977
Toshihiro Yoshioka, Ohtake, JP;
Shikiho Itaya, Ohtake, JP;
Yusaku Arima, Onga, JP;
Hirokazu Tanaka, Kitakyushu, JP;
Mitsui Petrochemical Industries Ltd., Tokyo, JP;
Catalysts & Chemicals Industries Co. Ltd., Tokyo, JP;
Abstract
A catalyst composition for the vapor phase reduction of nitrogen oxides with ammonia, which consists essentially of a non-noble transition metal compound supported on a shaped carrier comprising a titanium oxide and a clay mineral having an average particle size of 0.1 to 100 microns. The shaped carrier preferably contains an additional component which is an inorganic fibrous material, silica hydrogel, silica sol, or a mixture of at least two of these. An exhaust gas containing nitrogen oxides is treated, with a high percent NO removal, by contacting it with the catalyst composition in the presence of ammonia gas at 200 to 600.degree. C.