Ex-situ reduction and dry passivation of noble metal catalysts

Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And group viii containing

Reexamination Certificate

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C502S085000, C502S240000, C502S245000

Reexamination Certificate

active

07407909

ABSTRACT:
A method of ex-situ activation and dry passivation of supported noble metal catalysts including the steps of reducing in the presence of hydrogen and dry passivation by cooling in an inert atmosphere and exposing to air or by filling the pores of the catalyst with a low sulfur oil before exposing to air.

REFERENCES:
patent: 4372841 (1983-02-01), Stuntz et al.
patent: 2004/0200758 (2004-10-01), Yang et al.

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