Sequential elution process

Details Sequential elution process Sequential elution process

1983-07-14

1987-01-06

Richman, Barry S.

Chemistry: analytical and immunological testing

Including sample preparation

Liberation or purification of sample or separation of...

436161, 422 70, 210634, 210786, G01N 3324, B01D 1102

Patent

active

046346805

ABSTRACT:
A process and apparatus for the separation of complex mixtures of carbonaceous material by sequential elution with successively stronger solvents. In the process, a column containing glass beads is maintained in a fluidized state by a rapidly flowing stream of a weak solvent, and the sample is injected into this flowing stream such that a portion of the sample is dissolved therein and the remainder of the sample is precipitated therein and collected as a uniform deposit on the glass beads. Successively stronger solvents are then passed through the column to sequentially elute less soluble materials.

REFERENCES:
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patent: 4279755 (1981-07-01), Himsley
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Burke et al., "Liquid Column Fractionation; A Method of Solvent Fractionation of Coal Liquefaction and Petroleum Products" Fuel, vol. 58, Jul. 1979, pp. 539-541.
Farcasiu, "Fractionation and Structural Characterization of Coal Liquids" Fuel vol. 56, Jan. 1977, pp. 9-14.
Meier zu Koecker, "Continuous Fluidized-Bed Extraction and Catalytic Extract Hydrogenation" CA99(22):178741z (1983).
Meier zu Koecker, "Study of Extracts Obtained by Fluidized-Bed Extraction" CA97(26):219320r (1982).

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