Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By alkyl transfer – e.g. – disproportionation – etc.
Patent
1991-11-18
1992-11-10
McFarlane, Anthony
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By alkyl transfer, e.g., disproportionation, etc.
585855, 585867, 585868, C07C 604, C07C 700
Patent
active
051625970
ABSTRACT:
A disproportionation catalyst comprising an ammonium or an alkali metal tungsten oxide and a process for forming disproportionation product using the disproportionation catalyst are disclosed. The disproportionation process is used to facilitate the separation of at least one 1-olefin from a mixture of olefins that have close boiling points by contacting the mixture of olefins with another 1-olefin under disproportionation conditions to produce disproportionation products which have significantly different boiling points among themselves and can be easily separated by conventional means.
REFERENCES:
patent: 3637891 (1972-01-01), McGrath et al.
patent: 3673114 (1972-06-01), Allum et al.
patent: 3689589 (1972-09-01), Reusser
patent: 3965206 (1976-06-01), Montgomery et al.
patent: 4046832 (1977-09-01), Nowak et al.
patent: 4217299 (1980-08-01), Nakamura et al.
patent: 4754098 (1988-06-01), Drake
patent: 4996386 (1991-02-01), Hamilton et al.
Kirk-Othmer Encycl. Chem. Technol. vol. 23, pp. 430-432, 1979, discloses the preparation of alkali metal and ammonium metatungstates and the use of paratungstate as catalyst.
Kirk-Othmer Encycl. Chem. Technol. vol. 8, pp. 597-598, 1979, discloses using carbene-bearing complexes such as diphenylcarbenetungsten pentacarbonyl as catalyst for olefin metathesis.
McFarlane Anthony
Phillips Petroleum Company
Shay Lucas K.
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