Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2003-10-03
2008-11-18
Nguyen, Cam N. (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S327000, C502S328000, C502S332000, C502S335000, C502S337000, C502S340000, C502S341000, C502S349000, C502S350000, C502S351000, C502S355000, C502S415000, C502S439000
Reexamination Certificate
active
07452842
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.
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Shokubai Kouza, vol. 5, Shokubai Sekkei, pp. 141-142, Catalysis Society of Japan, 1985 and translation.
Hosoya Eiichi
Inaba Kiyoshi
Nakajima Hideyuki
Wakatsuki Toshiya
Japan Oil, Gas and Metals National Corporation
Nguyen Cam N.
The Webb Law Firm
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