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Displacement processes on hydrophilic/hydrophobic surfaces in 1-propanol-water mixtures

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Abstract

Selective adsorption of 1-propanol-water mixtures was investigated on adsorbents of various surface character. The enthalpy of displacement of 1-propanol by water was studied on graphitized PRINTEX-80, K-60 silicagel, and n-alkylammonium vermiculites. The free enthalpy and entropy isotherms of displacement were derived. The adsorption between the silicate layers of hydrophobic vermiculites was followed by x-ray measurements, and thermodynamic functions were calculated for the structural changes in the adsorption layers. Formation of alcohol-water clusters on the surfaces plays an important role.

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Authors and Affiliations

  1. Department of Colloid Chemistry, Attila József University, H-6720, Szeged, Hungary

    T. Marosi & I. Dékány

  2. Institut für Anorganic Chemistry University, Kiel, FRG

    G. Lagaly

Authors
  1. T. Marosi
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  2. I. Dékány
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  3. G. Lagaly
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Marosi, T., Dékány, I. & Lagaly, G. Displacement processes on hydrophilic/hydrophobic surfaces in 1-propanol-water mixtures. Colloid Polym Sci 272, 1136–1142 (1994). https://doi.org/10.1007/BF00652383

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  • DOI: https://doi.org/10.1007/BF00652383

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