Adsorption Science & Technology (Dec 1986)

Calorimetric Investigation of the Adsorption Properties of Microporous Aluminophosphate AlPO5

  • H. Thamm,
  • H. Stach,
  • E. Jahn,
  • B. Fahlke

DOI
https://doi.org/10.1177/026361748600300401
Journal volume & issue
Vol. 3

Abstract

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Differential heats of adsorption have been measured calorimetrically for benzene and n -hexane on AlPO 4 -5. Adsorption isotherms have been determined for benzene, n -hexane and H 2 O. The heat of adsorption for benzene on AlPO 4 -5 was found to be less than the heat of adsorption for n -hexane. Isotherms of all adsorbates investigated exhibited hysteresis loops. The hydrophilicity of AlPO 4 -5 is explained by capillary condensation and/or coordinately bonded water.