Engelhard Corporation

N.e. Chemcat Corporation

Basf Catalysts LLC

Masaki Funabiki

Teiji Yamada

Kunihide Kayano

Gary A Gramiccioni

Victor Rosynsky

Tomoya Takahashi

Tunehisa Kawauchi

Kenneth W Blamble

Brent C Bibbee

Jerry D Cornelius

Ralph A Quigley

Tadao Chiba

Tsunao Watanabe

A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath, it is rotated 180&#xb0;. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.

Method for catalyst coating of a substrate

A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath it is rotated 180&#xb0;. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.

Method for applying a catalyst composition to the interior of a hollow substrate

A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath, it is rotated 180&deg;. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.

System for catalytic coating of a substrate

A catalyst composition comprising a refractory support having deposited thereon an active layer containing a platinum group metal component comprising an alumina component having the platinum group metals rhodium and palladium dispersed thereon, a cerium compound, a strontium compound, and a zirconium compound.

Catalyst for purification of exhaust gas

Exhaust gas-purifying catalyst excellent in heat resistance and process

Exhaust gas-purifying catalyst and process for preparation thereof

An exhaust gas purification catalyst for removing carbon monoxide, hydrocarbons and nitrogen oxides from an exhaust gas and suppressing the evolution of hydrogen sulfide comprises a monolithic support and deposited thereon, at least one platinum-group element, active alumina, cerium oxide and germanium oxide. The catalyst is produced by a process which comprises

Exhaust gas purification catalyst for suppressing hydrogen sulfide

A three-way catalyst for the purification of automotive exhaust is made by depositing on a monolithic support a slurry containing a platinum group element, active alumina, cerium oxide a barium compound and a zirconium compound and calcining the support.

Process for producing a catalyst for purifying exhaust gases from

A catalyst, and a method for producing the catalyst, and a method for purifying exhaust gases which is very efficient in its use of rhodium has a layered catalytic structure on a refractory substrate, the inner layer containing ceria and platinum, the outer layer containing zirconia and rhodium.

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Shizuoka, Japan

Masaki Funabiki