Process for separating 1-dodecene and 1-tetradecene from an alum

Details Process for separating 1-dodecene and 1-tetradecene from an alum Process for separating 1-dodecene and 1-tetradecene from an alum

1989-05-01

1990-05-29

Manoharan, Virginia

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

203 80, 203 88, 203 91, 585511, B01D 300, C07C 704

Patent

active

049297880

ABSTRACT:
Dodecene-1 and 1-tetradecene can be rectified from a mixture containing 1-dodecene and 1-tetradecene and triethylaluminum ("TEA") which has about the same normal boiling point as 1-dodecene and 1-tetradecene by feeding the above mixture to an intermediate point of a rectification column maintained under sufficient vacuum (e.g. 5-30 torr) such that the temperature at the intermediate feed point is about 250.degree.-260.degree. F. and the overhead distillation temperature is about 190.degree.-240.degree. F. The TEA which normally boils at about the same temperature as 1-dodecene and 1-tetradecene will exist as a dimer permitting part of the 1-dodecene and 1-tetradecene to distill overhead and most of the TEA to exit the bottom of the column.

REFERENCES:
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patent: 3227773 (1966-01-01), Roming, Jr.
patent: 3249648 (1966-05-01), Carter et al.
patent: 3412126 (1968-11-01), Gautreaux
patent: 3751518 (1973-08-01), Hagan et al.
patent: 3789081 (1974-01-01), Lanier
patent: 3906053 (1975-09-01), Lanier
patent: 4435606 (1984-03-01), Motz et al.
Arnold Weissberger, "Technique of Organic Chemistry", Distillation, vol. IV, p. 3.

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