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Preface to “Zeolite Catalysis” The term zeolite is based on the Greek words for “to boil” and “stone” and has been known for more than 250 years. At that time, the Swedish mineralogist, A.F. Cronstedt (1722–1765), observed the formation of a large amount of steam when heating the material Stilbite, pointing to its porous character and adsorption capacity. At present, over 200 different zeolite frameworks have been identified. In general, zeolites are crystalline aluminosilicates with a defined micropore structure. Within zeolites, a good number of elements can be isomorphously incorporated and many more elements or their oxides can be hosted by zeolites. In addition, zeolites display a large variety of pore-mouths sizes, channels, crossings, etc. which has led to their designation as molecular sieves and uses in membrane applications. Nowadays, various hierarchical and composite materials are available offering further interesting properties, e.g., by introduction of mesopores or generation of fibers. Zeolites reveal Brønsted and Lewis acidic properties that can be highly varied as well, thereby justifying the name “solid acids”. Zeolites are immensely important in diverse industrial applications such as catalysts and adsorbents, for example in the refinery industry, chemical industry, detergent sector or for solar thermal collectors and adsorption refrigeration. This Special Issue collection focusses on new developments and recent progress with respect to zeolite-catalyzed chemical reactions, adsorption applications and membrane uses, as well as improved synthesis strategies and characterization techniques. It brought together the recent research of well-known research teams from all over the world. The editor thanks MDPI and Keith Hohn as Editor-in-Chief of Catalysts—the open access catalysis journal—and Mary Fan, as the Senior Assistant Editor, for the opportunity to organize this Special Issue on “Zeolite Catalysis” and for their immense support, and significant encouragement and patience. I would also like to thank the contributing authors and colleagues acting as peer reviewers for their efforts in preparing high quality manuscripts, and in further improving the manuscripts several times following comments and suggestions of the reviewers. Andreas Martin Guest Editor XIIIPDF Image | Zeolite Catalysis
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