Preparation of perfect glasses from zeolites

When glasses are traditionally formed from melts, due to slow crystallization dynamics, the configuration and free volume of the liquid state are frozen in a random structure with high entropy. The amorphous state can also be attained directly from a crystalline solid under pressure. In this case, at a certain rate of change in the pressure, some structural elements can remain ordered; i.e., the amorphous material can retain the crystalline topology. As a result, the amorphous material will have a very low entropy, close to that of the crystal, i.e., will be a “perfect” glass with new physical properties. The method for preparing such a perfect glass from zeolites and its properties are discussed.