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:
Nov. 18, 2008
Filed:
Oct. 03, 2003
Toshiya Wakatsuki, Funabashi, JP;
Kiyoshi Inaba, Ichikawa, JP;
Hideyuki Nakajima, Chiba, JP;
Eiichi Hosoya, Hachioji, JP;
Toshiya Wakatsuki, Funabashi, JP;
Kiyoshi Inaba, Ichikawa, JP;
Hideyuki Nakajima, Chiba, JP;
Eiichi Hosoya, Hachioji, JP;
Japan Oil, Gas and Metals National Corporation, Kanagawa, JP;
Abstract
A porous preform (carrier) is soaked in an impregnating solution, which contains both of a catalytic-activity constituent, e.g. Ni and/or Co, and a carrier-forming constituent, e.g. Mg, Al, Zr, Ti and/or Ca, so as to simultaneously infiltrate the catalytic-activity and carrier-forming constituents into the porous preform. The impregnated preform is dried, calcined at a temperature of 700° C. or higher and then activated at a temperature of 500° C. or higher, whereby fine catalytic-activity particles are distributed on a surface of the porous carrier with high dispersion. Due to finely-distributed catalytic-activity particles, the surface of the catalyst is prevented from deposition of carbonaceous matters during reformation of hydrocarbon and held in an active state over a long term.