Abstract
It is shown that octene-1 adsorbed on zeolite H-ZSM-5 at ambient temperature exhibits carbenium ion properties. Namely: (1) According to2H NMR, the proton of the acidic ≡Al-OH-Si≡ group of the zeolite is transferred into the CH2= group of the octene-1 molecule. (2) According to13C NMR the13C label inserted into the terminal CH2= group of the octene-1 molecule is scrambled over its hydrocarbon skeleton. Thermodynamic and kinetic parameters for carbon scrambling are measured within the temperature range 290–343 K. The zeolite framework is shown to favour the formation of the linear rather than branched carbeniumion.
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Stepanov, A.G., Luzgin, M.V., Romannikov, V.N. et al. Carbenium ion properties of octene-1 adsorbed on zeolite H-ZSM-5. Catal Lett 24, 271–284 (1994). https://doi.org/10.1007/BF00811800
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DOI: https://doi.org/10.1007/BF00811800