Catalytic preparation of diethylenetriamine
AssigneeUnion Carbide Corporation
InventorFrank G. Cowherd, III
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Abstract
A process for the production of an amine composition with a high proportion of diethylenetriamine to piperazine comprising reacting ethylenediamine with itself or monoethanolamine in the presence of a nickel, cobalt or rhodium catalyst at temperatures between about 170.degree. C. and 210.degree. C.
Claims12
A process for the production of an amine composition containing a high yield ratio of diethylenetriamine to piperazine which comprises maintaining ethylenediamine in the presence of a nickel, cobalt or rhodium catalyst, wherein the metal is present on the surface of the catalyst in a polyatomic form, and at a temperature between about 170.degree. C. to about 210.degree. C. and for a reaction time sufficient to produce diethylenetriamine and convert less than about 35% of the ethylenediamine to polyamine.
A process for the production of an amine composition containing a high yield ratio of diethylenetriamine to piperazine which comprises maintaining a mixture of ethylenediamine and monoethanolamine in the presence of a nickel, cobalt or rhodium catalyst, wherein the metal is present on the surface of the catalyst in a polyatomic form, and at a temperature between about 170.degree. C. and about 210.degree. C. and for a reaction time sufficient to produce diethylenetriamine and convert less than about 35% of the amine reactants to polyamine.
Dependencies are inferred from the claim text.