Share

IIR document

Studies of adsorption characteristics of activated carbons down to 4.5 K for the development of cryosorption pumps.

Number: pap. n. 088

Author(s) : KASTHURIRENGAN S., BEHERA U., GANGRADEY R., et al.

Summary

Pumps based on cryosorption are the only solution to pump helium, hydrogen in the high magnetic field and high temperature environment of a tokamak. Activated carbons are the most suitable adsorbents for the above. For this development, the knowledge of their adsorption characteristics of activated carbons in the range from 4.5 to 77 K is needed, but is scarce in the literature. Towards this, an experimental setup is developed for studies of adsorbents down to 4.5 K, which uses a commercial micropore analyzer operating at 77 K along with a two stage GM cryocooler for cooling the sample down to 4.5 K. This work presents the adsorption isotherms of several activated carbons from 4.5 to 10 K for helium adsorbate along with their pore size distributions and surface areas. The effect of adhesives (used in bonding the activated carbons to panel) on the adsorption characteristics are also discussed. These results are useful in the development of cryosorption pumps.

Available documents

Format PDF

Pages: 133-139

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: Studies of adsorption characteristics of activated carbons down to 4.5 K for the development of cryosorption pumps.
  • Record ID : 30005813
  • Languages: English
  • Source: Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Publication date: 2012/09/11

Links


See other articles from the proceedings (78)
See the conference proceedings

Indexing