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:
Dec. 29, 1998
Filed:
Oct. 17, 1996
Mitsunori Tabata, Saitama, JP;
Masaaki Kawatsuki, Saitama, JP;
Katsumi Miyamoto, Saitama, JP;
Hiroshi Tsuchida, Kanagawa, JP;
Tomohiro Yoshinari, Saitama, JP;
Kazushi Usui, Chiba, JP;
Fujio Suganuma, Saitama, JP;
Tadao Nakatsuji, Osaka, JP;
Hiromitsu Shimizu, Osaka, JP;
Ritsu Yasukawa, Osaka, JP;
Hideaki Hamada, Ibaraki, JP;
Takehiko Ito, Ibaraki, JP;
Yoshiaki Kintaichi, Ibaraki, JP;
Motoi Sasaki, Ibaraki, JP;
Japan as Represented by Director General of Agency of Industrial Science, , US;
Petroleum Energy Center, Tokyo, JP;
Cosmo Oil Co., Ltd., Tokyo, JP;
Sakai Chemical Industry Co., Ltd., Osaka, JP;
Abstract
A process for removing nitrogen oxide from exhaust is disclosed, comprising contacting exhaust containing nitrogen oxide with an alumina catalyst which contains not more than 0.5% by weight of an alkali metal and/or an alkaline earth metal and has a total pore volume of from 0.48 to 1.2 cm.sup.3 .multidot.g.sup.-1 with 0.26 to 0.6 cm.sup.3 .multidot.g.sup.-1 of the total pore volume being formed of pores of not greater than 80 .ANG. or has a volume of pores formed of pores of not greater than 60 .ANG. of from 0.06 to 0.2 cm.sup.3 .multidot.g.sup.-l and which may have supported thereon tin in an oxidative atmosphere containing excess oxygen in the presence of a hydrocarbon or an oxygen-containing organic compound.