A kinetic and mechanistic study of the double bond and skeletal isomerization of 1-tetradecene on SAPO-11

We present kinetic data for the double bond and skeletal isomerization of 1-tetradecene on SAPO-11 at 142 and 180 °C. The kinetic model permitted calculation of five different rate constants for double bond movements, methyl branch formation, and dimerization, as well as the corresponding Arrhenius parameters. We also discuss observations on the mechanism of the skeletal isomerization, concluding that methyl groups can form at significant distances from the carbon–carbon double bonds, apparently via rapidly interconverting carbenium ions on the catalyst's surface.

We studied the double bond and skeletal isomerization of 1-tetradecene on SAPO-11 at 142 and 180 °C. A kinetic analysis determined relative rate constants and Arrhenius parameters for six different reactions in the system. We also report new observations on the mechanism of skeletal isomerization in linear olefins.Figure optionsDownload as PowerPoint slide