Gas Chromatographic Separation of Lower Hydrocarbons and Permanent Gases using Ammonium Tungstosilicate as Solid Adsorbent

1 December 1990

journal article
Published by Oxford University Press (OUP) in Journal of Chromatographic Science

Vol. 28 (12) , 617-620
https://doi.org/10.1093/chromsci/28.12.617

Abstract

Ammonium tungstosilicate [(NH₄)₄SiW₁₂O₄₀] is being tested as the solid adsorbent in gas-solid chromatography for the separation of lower hydrocarbons and permanent gases. The nonporous glass beads-supported ammonium tungstosilicate (20%) column (6 ft × ⅛ in.) is tested for its performance in the separation of methane, ethane, propane, and n-butane in both isothermal and temperature programmed runs. The fractionation of the mixture containing methane, ethane, ethylene, acetylene, propane, propylene, and n-butane is achieved in a temperature programmed run. The peak areas and retention times are reproducible to a large extent. Ammonium tungstosilicate seems to be an effective adsorbent in the separation of nitrogen, methane, and carbon dioxide at isothermal conditions.

Keywords

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