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. 15, 2018
Filed:
Jun. 13, 2014
Unizeo Co., Ltd., Tokyo, JP;
MITSUI MINING & SMELTING CO., LTD., Tokyo, JP;
Abstract
Provided are: a M-exchanged beta zeolite which is useful for the catalytic removal of nitrogen monoxide contained in a gas to be purified even when oxygen is contained in the gas at a high concentration or when the gas has a low temperature; and a method for producing the M-exchanged beta zeolite. The M-exchanged beta zeolite according to the present invention has a SiO/AlOratio of 7 to 18, and is ion-exchanged by a Mion (wherein Mrepresents a n-valent metal cation; n represents a numeral value of 1 to 3; and M represents an element selected from the group consisting of Ni, Co, Cu, Mn, Zn, Sn, Ag, Li, K, Cs, Au, Ca, Mg, Pt, Pd, Rh and Ir). The amount of the Mion carried on the M-exchanged beta zeolite is preferably from 0.01 to 2.5 mmol/g relative to the amount of the M-exchanged beta zeolite.