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:
Jan. 19, 2016
Filed:
Nov. 22, 2012
Nippon Chemical Industrial Co., Ltd., Tokyo, JP;
National University Corporation Yokohama National University, Yokohama-shi, Kanagawa, JP;
The University of Tokyo, Tokyo, JP;
Yoshihiro Kubota, Yokohama, JP;
Satoshi Inagaki, Yokohama, JP;
Raita Komatsu, Yokohama, JP;
Keiji Itabashi, Tokyo, JP;
Tatsuya Okubo, Tokyo, JP;
Toyohiko Hieda, Tokyo, JP;
UniZeo Co., Ltd., Tokyo, JP;
NAT'L UNIVERSITY CORP. YOKOHAMA NAT'L UNIVERSITY, Yokohama-shi, Kanagaya, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
Abstract
Provided is a beta-type zeolite which has a high catalytic activity and is not easily deactivated. The beta-type zeolite of the invention has a substantially octahedral shape, has a Si/Al ratio of 5 or more, and is a proton-type zeolite. The Si/Al ratio is preferably 40 or more. This beta-type zeolite is preferably obtained by transforming a raw material beta-type zeolite synthesized without using a structure directing agent into an ammonium-type zeolite through ion exchange, then, exposing the beta-type zeolite to water vapor, and subjecting the exposed beta-type zeolite to an acid treatment.