Abstract
THE transition from van der Waal's adsorption to activated adsorption is shown by a minimum on the adsorption isobar,1 and a similar minimum occurs on the isobar representing the transition from activated adsorption to chemisorption.2 There is thus a region of temperature over which the amount of adsorption increases with rise in temperature. The experimental work so far published shows that, at least in the case of the first type of transition, the processes are reversible. The positive temperature coefficient must therefore be associated with an increase in the heat of adsorption.
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References
Cf. Benton and White, Jour. Amer. Chem. Soc., 52, 2332; 1930; and Taylor and Williamson, Jour. Amer. Chem. Soc., 53, 2178; 1931.
Garner and Kingman, NATURE, 126, 352; 1930. Trans. Far. Soc., 27, 322; 1931.
Garner and McKie, Jour. Chem. Soc., 2455; 1927.
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GARNER, W. Activated Adsorption. Nature 128, 583–584 (1931). https://doi.org/10.1038/128583b0
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DOI: https://doi.org/10.1038/128583b0
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