New heterogeneous catalysts based on zeolites with hierarchical pore system

The results of synthesis and packing of crystallized iron-containing nanosized zeolites of MFI structure in dense and loose structures having different textural properties are reported. Data on the formation of additional meso- and macropores immediately during zeolite crystallization using polystyr...

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Bibliographic Details
Published inPetroleum chemistry Vol. 56; no. 3; pp. 197 - 204
Main Authors Parkhomchuk, E. V., Sashkina, K. A., Parmon, V. N.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.03.2016
Springer
Subjects
Chemistry
Chemistry and Materials Science
Comparative analysis
Industrial Chemistry/Chemical Engineering
Zeolites
synthesis
hierarchical pore system
iron-containing zeolites
micro-meso-macropores
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Summary:The results of synthesis and packing of crystallized iron-containing nanosized zeolites of MFI structure in dense and loose structures having different textural properties are reported. Data on the formation of additional meso- and macropores immediately during zeolite crystallization using polystyrene microspheres in the form of an aqueous suspension (latex) and as a dry template of closely packed particles are also presented. Advantages and disadvantages of these procedures for preparing hierarchical iron-containing MFI structure zeolites have been compared. Values of the external surface area and the total pore volume of hierarchical Fe-silicalites are significantly higher than those for a reference sample. Using the polymer template to synthesize the hierarchical material consisting of zeolite nanocrystals makes it possible can significantly reduce the synthesis time and simplify the preparation procedure.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544116030105