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. 24, 2018
Filed:
Dec. 21, 2009
Ko Ariga, Yamaguchi, JP;
Hidekazu Aoyama, Yamaguchi, JP;
Ko Ariga, Yamaguchi, JP;
Hidekazu Aoyama, Yamaguchi, JP;
TOSOH CORPORATION, Yamaguchi, JP;
Abstract
A subject for the invention is to provide a chabazite-type zeolite that is expected to have durability and thermal resistance, which are practical properties required of catalyst supports and adsorbent bases, and that has profitability. A chabazite-type zeolite having an SiO/AlOmolar ratio of 15-50 and an average particle diameter size of 1.5 μm or more has high durability and high thermal resistance. Such a chabazite-type zeolite can be produced by crystallizing a starting-material composition in which the molar ratios of a structure-directing agent and water to SiOsatisfy0.05≤(structure-directing agent)/SiO<0.13 and5≤HO/SiO<30,in the presence of at least one kind of alkali metal ions selected from the group consisting of K, Rb, and Cs. The structure-directing agent preferably is an N,N,N-trimethyladamantaneammonium salt.