Silylation of charcoal to increase its hydrophobicity

Details Silylation of charcoal to increase its hydrophobicity Silylation of charcoal to increase its hydrophobicity

1990-11-28

1992-09-29

Dees, Carl F.

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

Solid sorbent

Organic

502413, B01J 2022, B01J 2032

Patent

active

051514028

ABSTRACT:
When charcoal is used as an adsorbent, its effective lifetime is decreased by the adsorption of water vapor. A process is described whereby the charcoal is treated with an effective amount of a non-chlorinated organo-silane to increase the hydrophobicity of the charcoal. The reduction in surface area and organic adsorption capacity, which occurs upon silylation, is relatively small whereas there is a somewhat greater reduction in water adsorption capacity of the silylated charcoal.

REFERENCES:
patent: 2697029 (1954-12-01), Baker et al.
patent: 4561976 (1985-12-01), Houser
G. Wojcik and K. Karpinski, Chemia Stosowana, XXII, 2, (1978).
A. D. Belapurkar et al., Applied Catalysis, 43, p. 1-13 (1988).

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