Composite catalyst for treatment of vehicular exhaust gases and

Details Composite catalyst for treatment of vehicular exhaust gases and Composite catalyst for treatment of vehicular exhaust gases and

1984-12-07

1986-11-04

Shine, W. J.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502243, 502261, 502262, 502303, 502304, 502313, 502324, 502325, 502326, 502327, 502328, 502329, 502331, 502332, 502333, 502334, 502339, 4232135, B01J 2104, B01J 2310, B01J 2364, B01J 2389

Patent

active

046210717

ABSTRACT:
A composite active phase/support catalyst adapted for the treatment of internal combustion engine exhaust gases, the active phase of which comprising at least one metal from a first group comprising platinum, palladium, iridium, rhodium, ruthenium, rhenium, silver, gold or plurality thereof and at least one additional metal and the support therefor comprising binder/filler admixture, is facilely prepared by (i) intimately admixing the binder and filler support material with at least 50% by weight but less than all of said at least one first group metal, or precursor thereof, and/or of said at least one additional metal, (ii) forming the resulting admixture into catalyst shaped article, (iii) drying and optionally calcining said catalyst shaped article, (iv) incorporating the remainder of said at least one first group metal, or precursor thereof, and/or said at least one additional metal into said catalyst shaped article, and then (v) drying and activating the composite catalyst.

REFERENCES:
patent: 3787333 (1974-01-01), Ichihara et al.
patent: 4294726 (1981-10-01), Bozon et al.
patent: 4299734 (1981-11-01), Fujitani et al.
patent: 4492769 (1985-01-01), Blanchard et al.

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