Ethylene dimerization

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing

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502162, 585527, 585526, B01J 3124

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active

044878478

ABSTRACT:
A novel ethylene dimerization catalyst is provided consisting essentially of a nickel compound, a phosphine compound, and an acidic compound. In addition, an improved ethylene dimerization process is provided which comprises contacting ethylene with the novel catalyst composition present, in an effective solvent, at a temperature from about 0.degree. C. to about 200.degree. C. As a result of the inventive process, high catalyst productivity and good selectivity to the desired dimerized product, 1-butene, is obtained.

REFERENCES:
patent: 3424816 (1969-01-01), McClure et al.
patent: 3497488 (1970-02-01), Dawans et al.
patent: 3535397 (1970-10-01), Schott
patent: 3564072 (1971-02-01), Butte, Jr.
patent: 3644564 (1972-02-01), Zwet et al.
patent: 3808246 (1974-04-01), Fahey
Fellmann et al., "Rapid Selective Dimerization of Ethylene to 1-Butene by a Tantalum Catalyst and a New Mechanism for Ethylene Oligomerization" Journal of the American Chemical Society, vol. 101, No. 14, Jul. 4, 1979, pp. 5099-5101.
Fellmann et al., "Trigonal-Bipyramidal Bis(neopentylidene) Neopentylidene/Ethylene and Bis(ethylene) Complexes of Tantalum and How They React with Ethylene. A Catalyst for Rapidly Dimerizing Ethylene to 1-Butene" J. Am. Chem. Soc. 1981, 103, 5752-5758.
McClure et al., "(.pi.-Cyclopentenyl) (.pi.-Cyclopentadienyl)nickel: A novel Catalyst for the Conversion of Ethylene to 1-Butene and n-Hexenes" Journal of Organometallic Chemistry, 80 (1974) 385-393.

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