Book excerpt: This book presents the first ever comprehensive survey of a new family of nanocomposite sorbents “salt in porous matrix” (CSPMs). These composites have recently been developed for selective sorption of water, alcohols, ammonia, and carbon dioxide. They owe their origin to the catchy idea of target-oriented tailoring of materials with predetermined adsorption properties harmonized with a particular adsorption process. The book develops the concept of target-oriented synthesis and suggests tools for tailoring new adsorbent materials adapted to multiple practical applications. It describes properties of approximately 50 new CSPMs of water, alcohols, ammonia, and carbon dioxide, including the data obtained in the author’s laboratory and literature available by the end of 2018. These data can be used for engineering calculations and analysis of practical applications. The book also discusses potential applications of these sorbents for storage and transformation of low-temperature heat, gas drying, maintenance of relative humidity in museums, and regeneration of heat and moisture in ventilation systems.