Abstract
This chapter examines the structure, morphology and physisorption properties of clays, pillared clays, zeolites and phosphate-based molecular sieves. The influence of the layer structure of clays (either rigid or non-rigid) on the adsorption isotherms is analysed. The physisorption properties of zeolites and phosphate-based molecular sieves are examined in the light of adsorption isotherms (of various gases, at various temperatures) and of calorimetric data. Several cases of re-organisation or sudden change in mobility of the adsorbate for a determined loading of the microporous structure are examined and interpreted. The final section refers to the many applications related to the adsorbent properties of these materials (e.g. gas separation, catalysis, detergency, dialysis, organic solvent dehydration, etc.)
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