Ordered Porous Nanomaterials: The Merit of Small

Abstract

This paper will introduce the reader to some of the “classical” and “new” families of ordered porous materials which have arisen throughout the past decades and/or years. From what is perhaps the best-known family of zeolites, which even now to this day is under constant research, to the exciting new family of hierarchical porous materials, the number of strategies, structures, porous textures, and potential applications grows with every passing day. We will attempt to put these new families into perspective from a synthetic and applied point of view in order to give the reader as broad a perspective as possible into these exciting materials.

Zeolites catalyze the halogen exchange reaction of alkyl halides

“…Zeolites are structured microporous aluminosilicates with an electronically defective network, compensated by extra-framework cations bound to the walls oxygen atoms (acid–base pair). 9 Fig. 1C shows that these acid–base pairs have been reported to break the R–X bond in organohalides and generate the corresponding alkene and HX as reaction products, since the dehydrohalogenation and dehalogenation reactions are favored over the halex reaction in acid or basic zeolites.…”

Introductory Chapter: Zeolites - From Discovery to New Applications on the Global Market

“…During hydrothermal synthesis in the presence of certain chemical compounds ("template" or structure directing agent (SDA)), which act on the organization of SBUs and consequential formation of tertiary or composite building units (TBUs), a final crystal zeolite is created in the form of a polyhedron which contains Si-O-Al bonds. Control of kinetic processes during zeolite synthesis is especially important since most of the zeolites created via this process are metastable phases [2].…”