Estimation of the minimum pore size sufficient for capillary hysteresis

A procedure for determination of the minimum pore sizes suitable for the formation of an adsorption-desorption hysteresis loop was developed. Conditions for the formation of hysteresis in infinite rectangular channels and in the cavities restricted along three directions (spheres, rectangular parallelepipeds) and in channels with different cross-sections and limited lengths are considered. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 18–28, January, 2008.