Hysteresis in Sorption. II. Scanning of the Hysteresis Loop. Titania Gel-Water System.

Abstract

The permanence of hysteresis in the sorption of water on titania gel has been shown in the previous communication (5). The exact cause cause of the phenomenon of hysteresis has, however been a matter of controversy. the explanation based on the cavity concept (3) has been gaining greater recognition during recent times. With a view to elucidating the exact cause of the phenomenon, the permanent hysteresis loop obtained in the sorption of water on titania gel has been scanned by traversing the loop from the various intermediate points on the sorption and the desorption curves enclosing the hysteresis loop. The results are found to give a convincing proof of the cavity concept.