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:
Aug. 18, 2015
Filed:
Jan. 17, 2012
Masaru Ogura, Tokyo, JP;
Keiji Itabashi, Tokyo, JP;
Tatsuya Okubo, Tokyo, JP;
Shanmugam Palani Elangovan, Tokyo, JP;
Masaru Ogura, Tokyo, JP;
Keiji Itabashi, Tokyo, JP;
Tatsuya Okubo, Tokyo, JP;
Shanmugam Palani Elangovan, Tokyo, JP;
UNIZEO CO., LTD., Tokyo, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
Abstract
To provide an Fe(II)-substituted beta type zeolite which has been ion-exchanged with Fe(II) ions and can effectively adsorb and remove nitrogen monoxide or hydrocarbon contained in gas to be cleaned, even if oxygen is present in the gas at a high concentration or the temperature of the gas is low. In the Fe(II)-substituted beta type zeolite, a ratio of SiO/AlOis preferably 10 to 18, a BET specific surface area is preferably 400 m/g to 700 m/g, a micropore specific surface area is preferably 290 m/g to 500 m/g, and a micropore volume is preferably 0.15 cm/g to 0.25 cm/g. The amount of Fe(II) supported is preferably 0.01% by mass to 6.5% by mass based on the Fe(II)-substituted beta type zeolite.