Share

IIR document

Purification of xenon by preparative gas chromatography.

Author(s) : BAUR K., MAGES W.

Summary

Before the krypton/xenon concentrate of an air separation plant can be further processed, methane must be eliminated. When methane is catalytically destroyed at high temperature, some air borne trace components like carbon tetrafluoride-sulfur hexafluoride and others are stable and survive this treatment. They enrich in the raw xenon product. The quantity of xenon is very small. Further purification can be performed with the same principle that is applied in the analytical determination of the purity of the product. In a gas chromatograph, the impurities are separated from the main component in a separating column. A carrier gas, for example helium or hydrogen, transports the impurities through the column to atmosphere. When xenon reaches the end of the column, the gas flow is switched. It then flows through a steel cylinder which is cooled with liquid nitrogen. Xenon is frozen out, while the carrier gas leaves the cylinder.

Available documents

Format PDF

Pages: 127-134

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Purification of xenon by preparative gas chromatography.
  • Record ID : 1998-0037
  • Languages: English
  • Source: MUST 1996. Meeting on Air Separation Technology
  • Publication date: 1996/10/10

Links


See other articles from the proceedings (14)
See the conference proceedings

Indexing