Abstract
Micropacked bidentate alkylsilane silica columns are prepared and characterized for the separation of light hydrocarbons by gas chromatography. The chromatographic and kinetic properties of the phases are examined, and the results are reported. The results show that a column packing chemically modified with 1,1,4,4-tetramethyl-1,4-dichlorodisilylethylene exhibits better separation performance probably due to effective dispersive interactions between the solutes and the stationary liquid phase. A 3.0-m column of this packing material provides a good, rapid separation of a mixture of 10 hydrocarbons at a lower column head pressure under isothermal conditions.
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