Catalysts

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

Reexamination Certificate

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C502S327000, C585S276000, C518S715000

Reexamination Certificate

active

07732370

ABSTRACT:
A catalyst including cobalt, zinc oxide and aluminium is described, having a total cobalt content of 15-75% by weight (on reduced catalyst), an aluminium content ≧10% by weight (based on ZnO) and which when reduced at 425° C., has a cobalt surface area as measured by hydrogen chemisorption at 150° C. of at least 20 m2/g cobalt. A method for preparing the catalyst is also described including combining a solution of cobalt, zinc and aluminium with an alkaline solution to effect co-precipitation of a cobalt-zinc-aluminium composition from the combined solutions, separating of the co-precipitated composition form the combined solutions, heating the composition to form an oxide composition, and optionally reducing at least a portion of the cobalt to cobalt metal. The catalysts may be used for hydrogenation reactions and for the Fischer-Tropsch synthesis of hydrocarbons.

REFERENCES:
patent: 4039302 (1977-08-01), Khera
patent: 4077995 (1978-03-01), Khera
patent: 4659742 (1987-04-01), Courty et al.
patent: 4675343 (1987-06-01), Courty et al.
patent: 4791141 (1988-12-01), Chaumette et al.
patent: 4826800 (1989-05-01), McAteer
patent: 5109027 (1992-04-01), Miller et al.
patent: 5140050 (1992-08-01), Mauldin et al.
patent: 7422995 (2008-09-01), Baijense et al.
patent: 0 671 976 (1999-08-01), None
patent: 1 358 934 (2003-11-01), None
Operator's Manual for the Micromeritics ASAP 201 Chemi System, V2.01, Appendix C, Part No. 01-42808-01, Oct. 1996.

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