Lithium aluminate as a catalyst support for hydrogenation of aromatic amines
AssigneeAir Products and Chemicals, Inc.
InventorsHao Ding, John Nelson Armor, Lenore Ann Emig, Dorai Ramprasad, Gamini Ananda Vedage, Frederick Carl Wilhelm
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Abstract
This invention relates to an improvement in a process for the catalytic hydrogenation of aromatic amines and to the resultant catalyst. The basic process for hydrogenating both mononuclear and polynuclear aromatic amines comprises contacting an aromatic amine with hydrogen in the presence of a rhodium catalyst under conditions for effecting ring hydrogenation. The improvement in the ring hydrogenation process resides in the use of a rhodium catalyst carried on a lithium aluminate support. Often ruthenium is included.
Claims12
In a process for the catalytic hydrogenation of aromatic amines to their ring hydrogenated counterparts, by contacting the aromatic amine with hydrogen in the presence of a rhodium catalyst carried on a mixed metal support, the improvement which comprises effecting said hydrogenation utilizing a catalyst comprising rhodium carried on a lithium aluminate support.
Dependencies are inferred from the claim text.