Separation of alkenes from alkadienes
AssigneeE. I. Du Pont de Nemours and Company
InventorWillie J. Barnette
Life of this patent
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Abstract
Process for separating alkenes, e.g., butene, from alkadienes, e.g., butadiene by preferentially hydrocyanating the diene and thereafter recovering the unreacted alkenes.
Claims6
A process for separating alkenes from a mixture comprising alkenes and alkadienes which process comprises contacting the mixture with hydrogen cyanide in the presence of a zero-valent nickel complex as a catalyst under hydrocyanation conditions at a temperature in the range 40.degree.-200.degree. C. and at a pressure in the range 0.1 -5 MPa in the liquid phase, whereby the hydrogen cyanide reacts with at least a portion of the alkadiene present to form the corresponding nitrile and thereafter separating the unreacted alkenes from the nitrile reaction product.
Dependencies are inferred from the claim text.