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:
Jun. 23, 2015
Filed:
Sep. 25, 2012
N.e. Chemcat Corporation, Minato-ku, Tokyo, JP;
Takehiro Fujimura, Shizuoka, JP;
Yoshinori Takahashi, Shizuoka, JP;
N.E. CHEMCAT CORPORATION, Tokyo, JP;
Abstract
The invention discloses a catalyst for purifying exhaust gas apparatus having a Three-way Catalyst (TWC) superior in purification performance of, particularly, NO, among carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NO), in exhaust gas discharged from a gasoline automobile. It is provided by a catalyst for purifying exhaust gas containing a Rhodium (Rh)-loaded porous inorganic oxide and barium sulfate (BaSO), with loaded or not-loaded onto alumina. At least a part of Rh is present independently from Ba inside a catalyst layer, and Rh—Ba deviation rate determined from EPMA analysis is 10% to 80%. It is preferable that loaded amount of Rhodium is 0.05 g/L to 2.0 g/L, and amount of barium sulfate is 0.5 g/L to 25 g/L and 0.5 g/L to 15 g/L, in the case of being loaded or not-loaded onto alumina, respectively.