ABSTRACT
Exploration of entirely new approaches to tailoring advanced porous materials is the backbone of modern materials science. As opposed to this general tendency, the synthesis of composites “salt in porous matrix” (CSPMs) is concerned with the utilization of known routes to porous materials, mainly of methods for the preparation of the traditional two-component supported catalysts. Methods for mixing components can be conditionally divided into three groups: impregnation with the salt, co-precipitation or gelation of components and mechanical mixing of components with further thermal dispersion. Generally, typical active salts for CSPMs are halides, nitrates, sulfates of alkali and alkali-earth metals that are weakly adsorbed on the surface of the matrix. The active substance in any CSPM is an inorganic salt, so its choice is of prime importance. The mode of deposition may strongly affect the texture of the deposited salt; for instance, interfacial deposition results in CSPMs with a very high dispersion of the supported salt.
