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. 21, 1985
Filed:
Jan. 25, 1984
Applicant:
Inventor:
John F Brennan, Des Plaines, IL (US);
Assignee:
UOP Inc., Des Plaines, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502309 ; 502312 ; 423239 ;
Abstract
A catalyst useful for the reduction of nitrogen oxide comprising vanadium and, optionally, tungsten deposited on an inorganic oxide support, preferably titania. A precursor of the catalyst is treated with an acid from the group comprising the moderately strong organic acids and/or the strong mineral acids, excluding sulfuric acid and phosphoric acid, preferably following the deposition of the metal(s). Other aspects of the invention are a method of preparing the catalyst and a process for its use wherein a gaseous stream of nitrogen oxide and ammonia is contacted with the catalyst at reductive reaction conditions.