On a simple nonisothermal adsorption experiment with organic vapors and an inertial microbalance to study the surface properties of hybrid (organic/inorganic) porous materials

摘要

A nonisothermal adsorption experiment using a controlled flow of cyclopentane in the 333-313 K range is used to simultaneously estimate the specific surface area and micropore volume of a hybrid (organic/inorganic) alcogel, For reference, the method is also applied to an all-inorganic material with a more rigid structure, namely, a high surface area SiO2-Al2O3, The proposed data analysis provides guidelines to determine whether adsorption data on a certain adsorbate/adsorbent system can be modeled effectively as a convolution of BET (meso- and macropore) and Dubinin-Radushkevitch (DR, micropore) contributions. (C) 2000 Academic Press. [References: 25]