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

1993-03-25

1996-05-14

Pal, Asok

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

Catalyst or precursor therefor

Boron or compound containing same

502202, 502230, 502207, 502208, 502210, 502213, 502216, 502219, 502223, 502224, 502332, 502333, B01J 2104, B01J 2116, B01J 2338

Patent

active

055167403

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.

REFERENCES:
patent: 2507496 (1950-05-01), Bond
patent: 4077912 (1978-03-01), Dolhyj et al.
patent: 4255253 (1981-03-01), Herrington et al.
patent: 4428864 (1984-01-01), Cairms et al.
patent: 4465789 (1984-08-01), Lindsley
patent: 4495308 (1985-01-01), Gibson
patent: 4888320 (1989-12-01), Ihara et al.
patent: 4900707 (1990-02-01), Cody et al.
patent: 4906601 (1990-03-01), Cody et al.
patent: 4919786 (1990-04-01), Hamner et al.
patent: 4923588 (1990-05-01), Cody et al.
patent: 4923841 (1990-05-01), Hamner et al.
patent: 4992159 (1991-02-01), Cody et al.
patent: 5021388 (1991-06-01), Fridey et al.
patent: 5075275 (1991-12-01), Murahami
patent: 5200382 (1993-04-01), Cody et al.
"Catalyst Supports and Supported Catalysts--Theoretical and Applied Concepts" Stiles (Editor) Butterworths, London, 1987, pll, 13-15, 46, 93.
"Fibrillar Alumina as a Wash-Coat on Monoliths in the Catalytic Oxidation of Xylene", Evaldsson, et al, Applied Catalysis, 55 (1989) 123-136.
"Effect of Hydrothermal Treatment on Alumina as Support for Noble Metal Catalysts" Rowendahl, et al Applied Catalysis 59 (1990) 89-102.
"Preparation of Highly Selective and Abrasion Resistant Thick Shell Catalysts for Heterogenously Catalyzed Exothermic-Oxidation Reaction" Arntz et al, Preparation of Catalysts IV, Elsevier 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.

Affiliated with

Also associated with

Rating

Catalyst comprising thin shell of catalytically active material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst comprising thin shell of catalytically active material , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst comprising thin shell of catalytically active material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1895639