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Isotherms and heats of adsorption of neopentane and carbon tetra chloride vapor on graphitized carbon black

  • Inorganic and Analytical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Summary

  1. 1.

    Measurements have been made of the adsorption isotherms and differential heat of adsorption of neopentane and carbon tetrachloride on thermal black graphitized at 3000°.

  2. 2.

    The large sphere-like molecules of these substances are adsorbed in a predominantly nonlocalized way, and interact strongly with one another, which causes a marked increase in the heat of adsorption as the monolayer is being filled and a strongly concave initial portion of the adsorption isotherm.

  3. 3.

    Free rotations or rotational oscillations of these molecules are possible in the adsorbed layer with small amounts of surface filling.

  4. 4.

    A discussion is given of different possible ways of defining the standard state of the adsorbed layer on a homogeneous surface, and values are given for the corresponding thermodynamic quantities of the adsorptive systems studied.

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The authors express their gratitude to Z. S. Kraits for furnishing the purified carbon tetrachloride.

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Avgul', N.N., Kiselev, A.V., Lygina, I.A. et al. Isotherms and heats of adsorption of neopentane and carbon tetra chloride vapor on graphitized carbon black. Russ Chem Bull 11, 717–723 (1962). https://doi.org/10.1007/BF00905289

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  • DOI: https://doi.org/10.1007/BF00905289

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