Summary
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1.
In a calorimeter with constant heat exchange we have measured isotherms and differential heats of adsorption of acetone, diethyl ether and acetic acid on a graphitized thermal black. At the start the isotherms are concave and the differential heats when plotted versus the amount adsorbed pass through a maximum.
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2.
The mutual interaction between these adsorbates in an adsorbed layer increases in the sequence from diethyl ether to acetone and acetic acid: this interaction originates from dispersional and electrostatic forces and in the case of acetic acid also from hydrogen bonds leading to the formation of dimers on the surface.
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3.
The theoretically calculated energies of the adsorption forces are in agreement with the heats of adsorption and give the right sequence for the various adsorbates.
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Avgul', N.N., Klselev, A.V. & Lygina, I.A. Adsorption and heat of adsorption of diethyl ether. acetone and acetic acid vapors on graphitized carbon black. Russ Chem Bull 10, 1977–1984 (1961). https://doi.org/10.1007/BF01182938
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DOI: https://doi.org/10.1007/BF01182938