(446e) Pillared Two-Dimensional Titanium Silicalite-1 Zeolite: Synthesis, Characterization and Catalytic Applications

Derived from the two-dimensional (2D) zeolite precursors, pillared zeolites contain mesopores between zeolitic layers and micropore within each zeolite layer. Thus, pillared zeolites couple intrinsic catalytic activity of micropores and fast mass transport of mesopores in one single materials, offering enhancement in catalyst utilization during catalytic processing of heavy and bulky reactant molecules. In this talk, we highlight our recent work on development of pillared 2D titanium silicalite-1 (TS-1) zeolites. The synthesis of TS-1 precursors, pillaring of the precursors into pillared 2D TS-1 zeolites, identification of acid site locations, textural property characterization, as well as catalytic applications in phenol hydroxylation and bulky molecule epoxidation reactions were studied sequentially and systematically. The present work brings a new addition to the structure and composition modifications of 2D lamellar zeolite with more open structures and diverse active sites for processing bulky molecules.