Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2007-11-20
2007-11-20
Nguyen, Tam M. (Department: 1764)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S300000, C502S325000, C502S328000, C502S329000
Reexamination Certificate
active
10668908
ABSTRACT:
A catalyst is provided comprising nickel in a reduced valence state on a carrier comprising zinc oxide and alumina, wherein the Zn:Ni atomic ratio is at least 12, and the catalyst particles are prepared by a) mixing zinc oxide in the form of a powder and alumina or an alumina precursor in the form of a powder; b) peptising the powder mixture and forming an extrudable dough by adding acid and water to the powder mixture in such amounts that the dough contains 0.8-1.2 moles acid equivalents per kg powder; c) extruding the extrudable dough to form extrudates; d) drying and calcining the extrudates; e) impregnating the extrudates with an aqueous solution of a nickel compound; f) drying, calcining and reducing the impregnated extrudates.
REFERENCES:
patent: 5094996 (1992-03-01), Kidd
patent: 5306685 (1994-04-01), Khare
patent: 6193877 (2001-02-01), McVicker et al.
patent: 6254766 (2001-07-01), Sughrue et al.
patent: 0401788 (1990-12-01), None
patent: 1224970 (2002-07-01), None
“New Hydrodesulfurization Catalyst for Pertroleum-Fed Fuel Cell Vehicles and Cogenerations,” by Kinya Tawara, Takeshi Nishimura, Hikoichi Iwanami, Tokuyoshi Nishimoto, and Takashi Hasuike,Ind. Eng. Chem. Res.2001, 40, pp. 2367-2370.
Nguyen Tam M.
Shell Oil Company
Stewart Charles W.
LandOfFree
Catalyst and its use in desulphurisation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst and its use in desulphurisation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst and its use in desulphurisation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3856843