Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States.
Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States.
J Am Chem Soc. 2015 Sep 9;137(35):11238-41. doi: 10.1021/jacs.5b06791. Epub 2015 Aug 31.
Zeolites are crystalline inorganic solids with microporous structures, having widespread applications in the fields of catalysis, separation, adsorption, microelectronics, and medical diagnosis. A major drawback of zeolites is the mass transfer limitation due to the small size of the micropores (less than 1 nm). Numerous efforts have been dedicated to integrating mesopores with the microporous zeolite structures by using templating and/or destructive approaches. Here we provide a new strategy for hierarchical pore size zeolite synthesis, without using supramolecular or hard templates. The branching epitaxial growth behavior, as a result of aluminum-zoning, contributes to the formation of the hierarchical porous zeolite structures.
沸石是具有微孔结构的结晶无机固体，在催化、分离、吸附、微电子和医学诊断等领域有广泛的应用。沸石的一个主要缺点是由于微孔（小于 1nm）的尺寸较小而导致的传质限制。人们已经做出了许多努力，通过使用模板和/或破坏性方法将中孔与微孔沸石结构集成在一起。在这里，我们提供了一种新的策略来合成具有分级孔径的沸石，而无需使用超分子或硬模板。由于铝分区，分支外延生长行为有助于形成分级多孔沸石结构。
