Hydrogenation process
AssigneeShell Oil Company
InventorsHerman J. Baumgartner, Jaroslav G. Balas
Life of this patent
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Abstract
The process of hydrogenating olefin compounds utilizing certain hydrogenation catalysts can be interrupted or halted by the addition to the reaction mixture of an organometallic reducing agent. Hydrogenation can be resumed by subsequent addition of an alcohol or other compound capable of reacting with the reducing agent.
Claims10
In the process for the hydrogenation of polymers of olefinically unsaturated hydrocarbons wherein the hydrocarbons are hydrogenated in the presence of a catalyst comprising the reaction product of 1.0-5.0 moles of an aluminum trihydrocarbyl per mole of an alkoxide or carboxylate of a metal of the group consisting of cobalt, nickel, iron or mixtures thereof, the improvement comprising hydrogenating the hydrocarbon and thereafter reversibly interrupting the hydrogenation by injection of supplementary aluminum trihydrocarbyl in an amount between 0.75 and 2.5 moles per mole of cobalt, nickel or iron.
Dependencies are inferred from the claim text.