Micro/mesoporous aluminosilicate composites from zeolite MCM-22 precursor

M. Kollár, R. M. Mihályi, G. Pál-Borbély, J. Valyon

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Micro/mesoporous aluminosilicate composites were prepared applying a two-step hydrothermal synthesis procedure. In the first step a zeolitic component, i.e., the precursor of zeolite MCM-22 was synthesized and its swollen and partially delaminated derivatives were prepared. In the second step mesoporous MCM-41 silicate was synthesized in a slurry of the above MCM-22 type precursor from additional silicate source and using hexadecyltrimethylammonium bromide (CTMABr) template. The structure, morphology and the acidic properties of the obtained composite materials were characterized by X-ray diffraction, infrared spectroscopy, N2 adsorption isotherms, and electron microscopy (SEM and TEM). The results suggest that the composite materials were built from nanosize, randomly orientated stacks of thin layers of MCM-22 type zeolite and of mesoporous silicate MCM-41 material. The catalytic activity of the composite material was compared to that of the zeolite MCM-22 in the hydroconversion of heptane.

Original languageEnglish
Pages (from-to)37-46
Number of pages10
JournalMicroporous and Mesoporous Materials
Volume99
Issue number1-2
DOIs
Publication statusPublished - Feb 1 2007

Keywords

  • Delaminated MCM-22
  • Heptane hydroconversion
  • MCM-22/MCM-41 composite
  • Micro/mesoporous aluminosilicates
  • Ni-MCM-22/MCM-41

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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