Germanium-Silicate UTL Structure Zeolites with Extra Large Pores

Оксана Юріївна Купецька, Ірина Миколаївна Іваненко

Abstract


The review contains literature data and the authors own research on methods for the synthesis of element-containinggermanium-silicate zeolites with extra large pores. In order to implement processes of form-selective catalysis withmolecular size more than 7 A, development of relevant scientific approaches to the synthesis of zeolites with extralarge pores is actual problem since germanium-silicate structural type UTL is one of the few examples of thermallystable zeolites with extra large porous system formed by 12- and 14-membered intersecting channels, and obtainingon their basis of new catalysts. The aim of the study is to identify the optimal conditions of the synthesis of zeolitematerials with UTL structure. The results and perspectives of such zeolites as catalysts for organic synthesis werediscussed. Analysis of the literature suggests that the introduction of isomorphous replacement elements is an effectivemethod for modifying acid, catalytic and, in some cases, the structural properties of silicate zeolites. Given this zeoliteswith structural type UTL may be promising for use in catalysis.

Keywords


Structure UTL; Acid sites; Catalyst; Adsorption; Mesoporous zeolite materials; The template

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DOI: http://dx.doi.org/10.20535/1810-0546.2014.2.55111

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