Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1979-01-22
1980-04-22
Konopka, P. E.
Gas separation
Means within gas stream for conducting concentrate to collector
55386, 252428, 252429R, 252430, 252441, 568750, 568758, B01D 1508, B01J 3102
Patent
active
041993306
ABSTRACT:
Highly effective chromatographic column packings are prepared by reacting hydroxyl groups on a silica surface with SiCl.sub.4 and then reacting the chlorosilylated surface with a polyglycol or polymeric glycol ester in a slurry reaction. Residual chlorosilane groups on the reacted surface are neutralized by reaction with methanol or other lower alkanol. The resulting modified silica has a bonded, essentially monomolecular organic surface film which provides thermal stability, uniform efficiency, and rapid analysis when the material is used as a column packing in gas-liquid chromatography.
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Journal of Chromotography, 135, pp. 261-272 (1977), by Sadao Mori.
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Anal. Chem.; 44 (1), 90-92 (1972), Locke et al.
Nestrick Terry J.
Stehl Rudolph H.
Konopka P. E.
The Dow Chemical Company
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