Composite metal oxide adsorbents

Details Composite metal oxide adsorbents Composite metal oxide adsorbents

1995-10-06

1998-06-02

Lewis, Michael

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502325, 502331, 502332, 502335, 502336, 502337, 502338, 502340, 502341, 502345, 502346, B01J 2358

Patent

active

057599394

ABSTRACT:
Finely divided composite materials are provided comprising a first metal oxide (e.g., MgO) at least partially coated with an extremely thin layer of a second metal oxide selected from the group consisting of the transition metal oxides such as Fe.sub.2 O.sub.3. The composites are very effective for the destructive adsorption of undesirable fluids in gaseous or liquid form, such as chlorocarbons and chlorofluorocarbons. In use, a fluid stream including undesirable fluids are contacted with the composites of the invention, such as through the use of a filter containing the composite as a part of the filter media thereof.

REFERENCES:
patent: 4360504 (1982-11-01), Blanck et al.
patent: 4504681 (1985-03-01), Armor
patent: 5021383 (1991-06-01), Berty
patent: 5380507 (1995-01-01), Hiltunen et al.
Berty et al. in "Oxidation and Removal of Chlorinated Hydrocarbons" New Frontiers in Catalysis, Jul. 19-24, 1992.
Gesser et al., "Aerogels and Related Poravs Materials" in Chemical Reviews vol. 89 No. 4, 1989 pp. 765-788 (no month).

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