Adsorption-Induced Deformation of AdsorbentsстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 24 октября 2018 г.
Аннотация:Abstract—Adsorption-induced deformation of AR-V and AUK carbon adsorbents and NaX zeolite has been
studied upon adsorption of n-С5Н12, n-С6Н18, n-С7Н16, and CO2 at temperatures of 193−423 K. It has been
shown that adsorption-induced deformation is positive upon the physical adsorption of gases and vapors on the surface of a nonporous (macroporous) solid when the excess adsorption is positive. When calculating the adsorption-induced deformation in the region of the capillary-condensation filling of mesopores, the additional pressure in capillaries, which is negative (contraction of an adsorbent), must be taken into account in the case of wetting a solid surface with a liquid adsorbate. The compressibility of AUK microporous carbon adsorbent as a porous solid is almost independent of the temperature and the properties of an adsorbate, and, for adsorption of n-C5H10 and n-C7H16 hydrocarbons and CO2, it is γа = (5.6 ± 0.6) × 10−6 bar−1. The compressibility of AUK adsorbent appears to be 87% higher than that of nonporous graphite.