Organophilic, quaternary phosphonium ion-exchanged smectite clay

Details Organophilic, quaternary phosphonium ion-exchanged smectite clay Organophilic, quaternary phosphonium ion-exchanged smectite clay

1996-04-17

1998-05-05

Lewis, Michael

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

Zeolite or clay, including gallium analogs

Including organic component

502 80, B01J 2904

Patent

active

057474036

ABSTRACT:
An quaternary phosphonium ion-exchanged clay and method of removing organic contaminants from air and/or water, by contacting the contaminants in the air or water with a quaternary phosphonium organo-clay. The clay is prepared by ion-exchange of an ion-exchangeable clay with (a) tetra-short chain alkyl (C.sub.1 -C.sub.4) quaternary phosphonium ion or (b) a di- or tri-short chain alkyl (C.sub.1 -C.sub.4) quaternary phosphonium ion having 1 or 2 mono-substituted or unsubstituted cycloakyl moieties, or one or two alkaryl moieties for removing air-laden and water-laden organic contaminants. The new organo-clays and methods are particularly adapted for removal of aromatic petroleum-based contaminants from water, such as benzene; alkyl-benzenes, such as toluene; xylenes (o-, m- and p-isomers); and chlorinated 1 and 2 carbon compounds, such as CCl.sub.4.

REFERENCES:
patent: 3929849 (1975-12-01), Oswald
Kalovoulos et al., "Determination of the total cation exchange capacity by triphenylmethylphosphonium bromide" Chemical Abstracts vol. 68 No. 16444, 1968 (no month).

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