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:
Dec. 16, 2014
Filed:
Nov. 11, 2013
Hyundai Motor Company, Seoul, KR;
Postech Academy-industry Foundation, Pohang-si, Gyeongsangbuk-do, KR;
Jin Woo Choung, Suwon, KR;
In-Sik Nam, Pohang, KR;
Mun Kyu Kim, Pohang-si, KR;
Pyung Soon Kim, Daejeon, KR;
Byong-Kwon Cho, Pohang-si, KR;
Hyundai Motor Company, Seoul, KR;
Postech Academy-Industry Foundation, Pohang-si, Gyeongsangbuk-Do, KR;
Abstract
A supported catalyst for reduction reaction of nitrogen oxides includes a support and an silver (Ag)-based compound and aluminum fluoride which are immobilized in the support. A method for preparing the supported catalyst for reduction reaction of nitrogen oxides includes an impregnation step wherein aluminum fluoride, a hydrate or a salt thereof, and a silver (Ag)-based compound or a hydrate thereof are reacted with a support and a step of calcining the support. Nitrogen oxides in exhaust gas are removed by reacting with a reducing agent, in the presence of the supported catalyst for reduction reaction of nitrogen oxides. Wherein, the supported catalyst has an excellent nitrogen oxide removal efficiency at a practical exhaustion temperature of 270 to 400° C.