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. 01, 2018
Filed:
Apr. 25, 2014
Daiichi Kigenso Kagaku Kogyo Co., Ltd., Osaka-shi, Osaka, JP;
Hiroshi Kodama, Osaka, JP;
DAIICHI KIGENSO KAGAKU KOGYO CO., LTD., Osaka, JP;
Abstract
This invention provides a zirconia-based porous body having a pore diameter suitable for supporting catalytic active species, such as precious metals, small variability in pore diameter, and a sufficient specific surface area even after 12-hour heating at 1000° C. Specifically, the invention provides a zirconia-based porous body in particle form having (1) a pore diameter peak at 20 to 100 nm in the pore distribution by BJH method, a P/W ratio of 0.05 or more wherein W represents half width of the peak and P represents height of the peak in the measured pore distribution curve, and a total pore volume of 0.5 cm/g or more; and (2) a pore diameter peak at 20 to 100 nm, the P/W ratio of 0.03 or more, a specific surface area of at least 40 m/g, and a total pore volume of 0.3 cm/g or more, after heat treatment at 1000° C. for 12 hours.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile