Chromatography processes using doped sol gel glasses as chromato

Details Chromatography processes using doped sol gel glasses as chromato Chromatography processes using doped sol gel glasses as chromato

1991-10-11

1994-05-03

Nutter, Nathan M.

Liquid purification or separation

Processes

Chromatography

210660, 210661, 210662, 210663, 210681, 210749, 2101982, 21050026, 21050027, 2105021, 210506, 95 88, B01D 1508, B01D 3914, C02F 128, C02F 142

Patent

active

053084950

ABSTRACT:
Chromatography processes employ doped sol gel glasses as chromatographic media. In one embodiment, a process for qualitative or quantitative determination of a reactive chemical contained in a sample comprises passing the sample through a column or planar chromatography apparatus wherein the apparatus includes packing or plates containing a porous doped sol gel glass. The doped sol gel glass is formed form a metal alkoxide and contains a compound encapsulated therein which is reactive with the reactive chemical in the pores of the doped sol gel glass. In another embodiment, a process for analyzing a gas sample containing a reactive chemical comprises passing the gas sample through glass capillaries or tubes containing porous doped sol gel glass pellets. The pellets are formed from a metal alkoxide and contain a colorimetric reagent encapsulated therein which is reactive with the reactive chemical in the pores of the pellets. In a third embodiment, a doped sol gel glass is included in the chromatographic media for pretreatment cleanup for interference removal prior to the chromatographic separation.

REFERENCES:
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patent: 4335017 (1982-06-01), Miles et al.
patent: 4436823 (1984-03-01), Blumcke et al.
Carturan et al "Inorganic Gels for Immobilization of Biocatalysts" J. of Mole Catalysis, 57 (1989) L13-L16.
R. E. Majors, J. of Chromatographic Science, 15, 334 (1977).
E. Stahl, Thin Layer Chromatography, 2nd ed., SpringerVerlag, Berlin (1969) p. 48.
Brinker, C. J. Scherer, G. W. Sol-Gel Science, Academic Press, San Diego (1990).

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