Advanced synthesis methodologies of hierarchical zeolites and characterization by different techniques for improved use of microporous materials in heterogeneous catalysis

Abstract

The well-established field of zeolites, and microporous solids of the same family, has been revitalized in recent years by a wave of research targeting improved accessibility and transport of molecules in these microporous materials. Despite being dressed with a truly unique combination of properties, zeolite catalysts appear under-utilized in many industrial reactions due to diffusion constraints. The Research Group on Catalysis (RGCat) of Univ Estadual Paulista - UNESP nucleated after the approval of FAPESP budget for the period between 2010-2014. The main target of RGCat is the investigation of heterogeneous catalysts for the conversion of renewable feedstocks like glycerol and ethanol. In the year of 2012 the RGCat went forward and started the study on synthesis methodologies for improved use of microporous materials in heterogeneous catalysis. Despite the early stage of this research topic, the GPCat is aware that in the near horizon an increasing number of hierarchical zeolites will be implemented in industry for specific processes. By now, a representative number of laboratory studies all over the world have shown improved activity, selectivity, and/or lifetime on hierarchical zeolites compared to conventional (purely microporous) zeolites. This project is expected to promote integration of new concepts in integrative synthesis of zeolitic catalysts by the use of supramolecular chemistry and to strengthen the capacities of highly-qualified academic staff. (AU)