Environmentally friendly process for the hydrogenation of dinitriles

The present invention concerns the hydrogenation of aliphatic or alicyclic dinitriles to produce diamines and/or aminonitriles, e.g. adiponitrile to produce hexamethylenediamine and/or 6-aminocapronitrile. Process for converting a dinitrile to a diamine and optionally an aminonitrile, in which a Gro...

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Bibliographic Details
Main Authors Allgeier, Alan M, Koch, Theodore A, Sengupta, Sourav K
Format Patent
LanguageEnglish
Published 23.04.2002
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Summary:The present invention concerns the hydrogenation of aliphatic or alicyclic dinitriles to produce diamines and/or aminonitriles, e.g. adiponitrile to produce hexamethylenediamine and/or 6-aminocapronitrile. Process for converting a dinitrile to a diamine and optionally an aminonitrile, in which a Group VIII element catalyst is treated with a modifier either before or during a substantially solvent-free hydrogenation reaction in which the dinitrile is contacted with hydrogen in the presence of the catalyst.