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Chromatographia

, Volume 29, Issue 7–8, pp 366–374 | Cite as

Separation of alkylnaphthalenes by preparative liquid chromatography using column switching systems

  • J. Kříž
  • E. Adamcová
  • L. Vodička
Originals

Summary

The paper describes the separation of the mixture of alkynaphthalenes from distillation cuts of a pyrolysis oil, by preparative liquid chromatography on silica. The design of the system permits the connection of the columns to form multicolumn systems.

The samples were first separated on a single column. The mixtures were further separated using two-column chromatography systems.

The obtained fractions were analyzed by capillary gas chromatography. In most cases a substantial increase in the concentrations of the individual components was achieved. In several cases, pure compounds have been obtained. Separation efficiency increases in the following order: single column, two directly coupled collumns, two-step switching chromatography, heartcutting.

Key Words

Column liquid chromatography Preparative scale separation Column coupling and column switching GC analysis of fractions Diaromatic hydrocarbons 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1990

Authors and Affiliations

  • J. Kříž
    • 1
  • E. Adamcová
    • 1
  • L. Vodička
    • 1
  1. 1.Laboratory of Synthetic FuelsInstitute of Chemical TechnologyPrague 6Czechoslovakia

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