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:
Jul. 20, 2021
Filed:
Oct. 25, 2018
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
National University Corporation Tottori University, Tottori, JP;
National University Corporation Yokohama National University, Yokohama, JP;
Yoshihiro Kubota, Kanagawa, JP;
Satoshi Inagaki, Kanagawa, JP;
Naonobu Katada, Tottori, JP;
Satoshi Suganuma, Tottori, JP;
Yasuo Yamazaki, Tokyo, JP;
Takahiro Kogawa, Saitama, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
NATIONAL UNIVERSITY CORPORATION TOTTORI UNIVERSITY, Tottori, JP;
NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, Kanagawa, JP;
Abstract
The purpose of the present invention is to provide a metal-substituted beta zeolite that exhibits a more excellent catalytic performance than conventional one, and a method for producing the same. The present invention provides a metal-substituted beta zeolite by subjecting an alkali metal-form beta zeolite produced without using an organic structure-directing agent to ion exchange with ammonium ion and then, using a filter cake procedure, to ion exchange with copper ion or iron(II) ion. The present invention also provides a metal-substituted beta zeolite which has been ion exchanged with copper ion or iron(II) ion and in which the amount of Lewis acid sites is greater than the amount of Bronsted acid sites when the amount of Bronsted acid sites and the amount of Lewis acid sites are measured by ammonia infrared-mass spectroscopy temperature-programmed desorption on the as-produced state.