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Document IIF

Études sur les caractéristiques d'adsorption des charbons actifs jusqu'à des températures de 4,5 K pour le développement des pompes à cryosorption.

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

Numéro : pap. n. 088

Auteurs : KASTHURIRENGAN S., BEHERA U., GANGRADEY R., et al.

Résumé

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.

Documents disponibles

Format PDF

Pages : 133-139

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Studies of adsorption characteristics of activated carbons down to 4.5 K for the development of cryosorption pumps.
  • Identifiant de la fiche : 30005813
  • Langues : Anglais
  • Source : Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Date d'édition : 11/09/2012

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