Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2011-03-29
2011-03-29
Mayes, Melvin C (Department: 1732)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S336000, C502S327000, C502S326000, C502S302000, C518S715000, C518S700000
Reexamination Certificate
active
07915193
ABSTRACT:
A method of activating an iron Fischer-Tropsch catalyst by introducing an inert gas into a reactor comprising a slurry of the catalyst at a first temperature, increasing the reactor temperature from the first temperature to a second temperature at a first ramp rate, wherein the second temperature is in the range of from about 150° C. to 250° C., introducing synthesis gas having a ratio of H2:CO to the reactor at a space velocity, and increasing the reactor temperature from the second temperature to a third temperature at a second ramp rate, wherein the third temperature is in the range of from about 270° C. to 300° C. The iron Fischer-Tropsch catalyst may be a precipitated unsupported iron catalyst, production of which is also provided.
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International Application No. PCT/US2009/064895 International Search Report dated Jun. 24, 2010, 11 pages.
Benham Charles B.
Bley Richard
Demirel Belma
Fraenkel Dan
Rejai Bahman
Mayes Melvin C
Nguyen Colette
Porter Hedges LLP
Rentech Inc.
Westby Timothy S.
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