Influence of zeolite pore structure on catalytic reactivity

A. Runstraat, van de, P.J. Stobbelaar, J. Grondelle, van, L.J. IJzendoorn, van, R.A. Santen, van

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

13 Citations (Scopus)
29 Downloads (Pure)


The influence of zeolite pore-size and shape on the hydro-isomerization of n-hexane was studied. Computer simulations and kinetic measurements, in combination with Positron Emission Profiling (PEP) experiments have been performed. Results showed that, for zeolites with a Al/Si molar ratio of less than 0.1 acidic protons had the same activity. Differences in reactivity are due to differences in the heat of adsorption. Smaller pores result in a higher steady state concentration of adsorbed substrate and adsorbed alkoxy species. Based on a kinetic model, and using experimental heats of adsorption and theoretical protonation energies, the activation energy of hydro-isomerization of n-hexane was found to be approximately 127 kJ/mol. This is consistent with results of a recent quantum chemical model of reactions catalysed by a zeolite proton.
Original languageEnglish
Title of host publicationProgress in zeolite and microporous materials : proceedings of the 11th International Zeolite Conference, Seoul, Korea
EditorsH. Chon, S.-K. Ihm, Y.S. Uh
Place of PublicationAmsterdam
ISBN (Print)0-444-82344-1
Publication statusPublished - 1997
Event11th International Zeolite conference - Seoul, Korea, Democratic People's Republic of
Duration: 12 Aug 199617 Aug 1996
Conference number: 11

Publication series

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


Conference11th International Zeolite conference
Abbreviated titleIZC
Country/TerritoryKorea, Democratic People's Republic of
Other11th International Zeolite conference, Seoul, Korea, 12-17-August 1996


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