3 years ago

Mechanistic Studies on Selective Trimerization of Linear α-Olefins over a Supported Titanium Catalyst

Mechanistic Studies on Selective Trimerization of Linear α-Olefins over a Supported Titanium Catalyst
D. Keith Steelman, Dinesh C. Aluthge, John E. Bercaw, Jay A. Labinger, Matthew C. Lehman
The supported titanium catalyst s(FI)Ti, generated by adding (FI)TiCl3 to MAO-treated SiO2 (FI = (N-(5-methyl-3-(1-adamantyl)salicylidene)-2′-(2″-methoxyphenyl)anilinato), effects the selective trimerization of the linear α-olefins (LAOs) propene, 1-pentene, 1-hexene, and 1-decene, with >95% selectivity for trimers and ∼85% selectivity to a single isomer thereof (2,3,5-trialkyl-1-hexene). Mechanistic interpretations are offered for the high regioselectivity as well as for some unusual kinetics behavior, including third-order dependence on LAO concentration and nearly identical initial rates at 0 and 25 °C.

Publisher URL: http://dx.doi.org/10.1021/acscatal.7b00256

DOI: 10.1021/acscatal.7b00256

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