Multi-layer non-identical catalyst on metal substrate by electro

Details Multi-layer non-identical catalyst on metal substrate by electro Multi-layer non-identical catalyst on metal substrate by electro

1998-04-17

2000-06-06

Niebling, John F.

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

Miscellaneous

502303, 502304, 502340, 502349, 502350, 502355, 50252712, 50252713, B01J 2104

Patent

active

060718501

ABSTRACT:
A method for producing by electrophoretic deposition multi-layer, polyfunctional, catalyst members for use in catalytic converters having a plurality of suitably porous and adherent catalyst support coatings of substantially uniform thickness, a plurality of non-identical catalytic agents imbued therein/on, and a flexible metal substrate, are disclosed. Such process involves maintaining electrical interaction between a metal substrate previously coated with catalyst-catalyst support material, the power source, and the electrodes disposed in the electrophoretic deposition ("EPD") cell containing a slurry of a second catalyst support material and a second catalyst composition non-identical to that found in the first catalytically-active layer.

REFERENCES:
patent: 4294726 (1981-10-01), Bozon et al.
patent: 5057483 (1991-10-01), Wan
patent: 5591691 (1997-01-01), Friedman et al.

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