Synthesis of renewable jet and diesel fuels from 2-ethyl-1-hexene

doi:10.1039/B924004G

Paper

Synthesis of renewable jet and diesel fuels from 2-ethyl-1-hexene

Published Mar 2, 2010 · B. Harvey, R. Quintana

Energy and Environmental Science

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103

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Abstract

An efficient method for the selective dimerization of the renewable feedstock, 2-ethyl-1-hexene, to a complex mixture of C16H32 hydrocarbons has been developed. To optimize the process, the activity of a variety of strongly acidic heterogeneous catalysts was investigated. Montmorillonite K-10 and sulfated zirconia readily isomerized 2-ethyl-1-hexene to a mixture of the cis- and trans isomers of 3-methyl-2-heptene and 3-methyl-3-heptene, but were inactive for the dimerization of 2-ethyl-1-hexene at temperatures up to 116 °C. In contrast, the cation exchange resins Amberlyst-15 and Nafion, readily dimerized 2-ethyl-1-hexene at elevated temperatures. For both sets of catalysts, the degree of hydration strongly affected the rate of isomerization/dimerization. After hydrogenation over PtO2 and fractional distillation, saturated dimer mixtures could be isolated in up to 90% yield. The dimers have a density of 0.78 g mL−1 and a freezing point <−60 °C, suggesting that they can be blended with renewable or conventional jet fuels, without adversely affecting the overall density and low temperature viscosity of the mixtures.

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Study Snapshot

This study developed an efficient method for selective dimerization of renewable 2-ethyl-1-hexene to produce renewable jet and diesel fuels with potential for blends with conventional fuels without affecting density and low temperature viscosity.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Synthesis of renewable jet and diesel fuels from 2-ethyl-1-hexene

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Citations

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