n-Heptane hydroconversion on bifunctional hierarchical catalyst derived from zeolite MCM-22

Márton Kollár, Magdolna R. Mihályi, József Valyon

Research output: Conference contribution

1 Citation (Scopus)

Abstract

MCM-22/MCM-41 composite, having hierarchical micro/mesoporous pore structure, was prepared using two-step synthesis method. Accordingly, mesoporous MCM-41 silica was synthesized in the presence of a delaminated MCM-22 zeolite precursor (dl-MCM-22). The structure, texture, and the acidity of the composite were compared to the corresponding properties of the MCM-22 zeolite. The hydroconversion of n-heptane was studied over the Ni,H-forms of these preparations at 240°C and 5 bar total pressure. At equal space times, regardless of the Ni-loading (Ni/H+ = ∼0.25 or 0.5), the rate of cracking was significantly lower over the composite than over the zeolite catalysts. The lower cracking activity was attributed to the faster transport of the reactants and products within the composite particles. At similar conversions similar selectivities were obtained over the compared catalysts.

Original languageEnglish
Title of host publicationScientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium
PublisherElsevier Inc.
Pages727-730
Number of pages4
ISBN (Print)9780444536013
DOIs
Publication statusPublished - jan. 1 2010

Publication series

NameStudies in Surface Science and Catalysis
Volume175
ISSN (Print)0167-2991

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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  • Cite this

    Kollár, M., Mihályi, M. R., & Valyon, J. (2010). n-Heptane hydroconversion on bifunctional hierarchical catalyst derived from zeolite MCM-22. In Scientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium (pp. 727-730). (Studies in Surface Science and Catalysis; Vol. 175). Elsevier Inc.. https://doi.org/10.1016/S0167-2991(10)75146-6