Low-temperature oligomerization of small olefins on zeolite H-ZSM-5. An investigation with high-resolution solid-state 13C-NMR

Oligomerization reactions of ethene, propene, isobutene, and 2-methyl-butene-1 on zeolite H-ZSM-5 at 300 and 373K were investigated using high-resolution solid-state 13C-NMR spectroscopy. It is shown that at 300K only linear oligomers are formed, while at 373K some branching is observed. Thus at 300...

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Published inJournal of catalysis Vol. 80; no. 1; pp. 130 - 138
Main Authors van den Berg, J.P., Wolthuizen, J.P., Clague, A.D.H., Hays, G.R., Huis, R., van Hooff, J.H.C.
Format Journal Article
LanguageEnglish
Published Elsevier Inc 01.03.1983
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Summary:Oligomerization reactions of ethene, propene, isobutene, and 2-methyl-butene-1 on zeolite H-ZSM-5 at 300 and 373K were investigated using high-resolution solid-state 13C-NMR spectroscopy. It is shown that at 300K only linear oligomers are formed, while at 373K some branching is observed. Thus at 300K on zeolite H-ZSM-5 initially formed branched oligomers are stretched in consecutive isomerization reactions. Differential scanning calorimetry experiments on the adsorption of n-hexane and isohexane show that the specific pore dimensions of zeolite ZSM-5 are responsible for an increased heat of adsorption of linear paraffins compared to branched paraffins. A reaction scheme is presented to explain the experimental data.
ISSN:0021-9517
1090-2694
DOI:10.1016/0021-9517(83)90237-3