Process for manufacturing impregnated silicas and the use of the

Details Process for manufacturing impregnated silicas and the use of the Process for manufacturing impregnated silicas and the use of the

1980-03-13

1981-11-03

Smith, William F.

Liquid purification or separation

With means to add treating material

Chromatography

252428, 23230HC, 208310Z, 585830, C02F 168, B01J 3102, C07C 712

Patent

active

042984726

ABSTRACT:
Impregnated silica is manufactured by passing a substantially anhydrous solution of a polar organic compound in a non-polar organic diluent through a bed of substantially anhydrous silica particles, under a pressure of at least 200 bars so as to modify the adsorbent properties of the silica particles with the selective properties of the polar compound without impairing the silica particle adsorbing efficiency.

REFERENCES:
patent: 2632778 (1953-03-01), Jorach
patent: 3855333 (1974-12-01), Neuzil
Majors, Ronald E., Analylical Chemistry, vol. 44, No. 11, Sep. 1972, pp. 1722 to 1726.
Scheflan, Leopold et al., The Handbook of Solvents, D. Van Nostrand Co., Inc., New York, 1953, pp. 408-409.

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