Catalyst comprising thin shell of catalytically active material

Details Catalyst comprising thin shell of catalytically active material Catalyst comprising thin shell of catalytically active material

1991-11-15

1993-04-06

Garvin, Patrick P.

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

Catalyst or precursor therefor

Boron or compound containing same

502207, 502208, 502210, 502213, 502216, 502219, 502223, 502230, 502323, 502324, 502332, 502333, 502527, 502202, B01J 2713

Patent

active

052003825

ABSTRACT:
A catalyst is disclosed comprising a thin outer shell of catalytic material bonded to an inner core of catalytically inert material. The catalyst is made by coating a catalytically inert core such as alpha alumina, with a thin layer of finely divided catalytically active material in a slurry of colloidal boehmite/pseudo boehmite then calcining to convert the boehmite/pseudo boehmite into .gamma. alumina thereby bonding it to the inert core. Catalysts made by this technique containing an outer shell of platinum on fluorided alumina in an inert core of alpha alumina .gamma. are attractive isomerization catalysts.

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patent: 4992159 (1991-02-01), Cody et al.
"Preparation of Highly Selective and Abrasion Resistant Thick Shell Catalysts For Heterogeneously Catalyzed Exothermic-Oxidation Reaction" Arntz et al., Preparation of Catalysts IV, Else vier Science Publishers pp. 137-149 (1987).
"Theory of Preparation of Supported Catalysts" Nelmark et al. Ind. Eng. Chem. Prod. Res. Dev. 1981, 20 439-450.

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