| 释义 |
persorption Chem.|pəˈsɔːpʃən|
[f. permeation + sorption.]
Sorption in which molecules of a gas enter pores in a solid that are only a little larger than themselves.
1930McBain & Britton in Jrnl. Amer. Chem. Soc. LII. 2220 The sorbed molecules of nitrogen must be so intimately surrounded by the atoms of carbon with which they are in contact that the designation ‘adsorption’, which implies a surface, becomes a misnomer. There is very little difference in such a case between adsorption and absorption; and if a precise word to describe sorption by charcoal were required, the new term ‘persorption’ might be coined. 1948Glasstone Textbk. Physical Chem. (ed. 2) xiv. 1204 It is probable that persorption is operative in the highly active charcoals, and perhaps to some extent in silica gel; the occlusion of hydrogen by palladium..may well be an extreme case of combined activated adsorption and persorption. 1960A. W. Adamson Physical Chem. of Surfaces xi. 523 What might be considered to be a limiting or extreme case of persorption is the formation of clathrate compounds. |