Preferential oxidation catalyst and process for preparing...

Details Preferential oxidation catalyst and process for preparing... Preferential oxidation catalyst and process for preparing...

2007-07-24

2007-07-24

Lorengo, J. A. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S327000, C502S334000, C502S339000

Reexamination Certificate

active

10934298

ABSTRACT:
Disclosed is a process for preparing a stable PROX reaction catalyst, comprising the steps of (a) preparing a catalyst platinum supported on alumina; (b) calcinating the catalyst from step (a) at 300˜600° C. for 2˜4 hours; (c) contacting the catalyst obtained from step (b) with hydrogen at 300° C.˜600° C. for 2˜4 hours to reduce the catalyst; and (d) dropping the temperature in the reduced catalyst from step (c) to less than 100° C. and then contacting the catalyst with a predetermined solvent and/or gas while elevating the temperature to 300° C.–600° C. The catalyst has Pt—Al arrangement, the content of Pt being 0.5˜7% by weight and has an overall shape of an oval.

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