Catalytic process for minimizing the H.sub.2 S emissions from au

Details Catalytic process for minimizing the H.sub.2 S emissions from au Catalytic process for minimizing the H.sub.2 S emissions from au

1988-05-23

1991-04-16

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

4232132, 4232135, B01D 4700, B01J 802

Patent

active

050080903

ABSTRACT:
This invention relates to a catalyst comprising a mixture of a primary refractory inorganic oxide having dispersed thereon at least one first active component selected from the group consisting of rare earth oxides and a secondary support consisting of zirconia, titania or cerium oxide having dispersed thereon at least one second active component which is a metal oxide, the metal selected from the group consisting of metals which form a stable sulfide said mixture having at least one main catalytic metal selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium deposited thereon. This invention also relates to a method of manufacturing said catalyst. Finally a method to minimize the formation of H.sub.2 S when automotive exhaust is contacted with a method is also claimed.

REFERENCES:
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patent: 3840471 (1974-10-01), Keith et al.
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patent: 4760044 (1988-07-01), Joy et al.
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G. J. Barnes and J. C. Summers, "Hydrogen Sulfide Formation Over Automotive Oxidation Catalysts", Soc. of Automotive Engineers, Paper No. 750093.

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