Process for recovering homogeneous metal hydride catalysts

摘要

The present invention relates to a process for recovery of homogeneous metal hydride catalyst from a reactor stream as catalyst suitable for recycle to a reactor comprising the steps of: removing a stream from a reactor, said stream comprising the homogeneous metal hydride catalyst; contacting the stream with a solid acidic absorbent under process conditions which allow at least some of the metal to become bound to the absorbent; subjecting the metal bound to the absorbent, under process conditions which allow desorption of the metal, to a fluid stripping medium comprising hydrogen and solvent; and recovering the active metal hydride catalyst.

主权项

1. A process for recovery of homogeneous Group VIII noble metal hydride catalyst from a reactor stream as catalyst suitable for recycle to a reactor comprising the steps of:
(a) removing a stream from a reactor, said stream comprising deactivated homogeneous Group VIII noble metal hydride catalyst; (b) contacting the stream with a solid acidic absorbent under process conditions which allow at least some of the metal to become bound to the absorbent; (c) subjecting the metal bound to the absorbent to a fluid stripping medium comprising hydrogen and a solvent, under process conditions which allow the metal to be desorbed from the absorbent and rehydrided at a pressure above 200 kPa to form an active Group VIII noble metal hydride catalyst; and (d) recovering the homogeneous active Group VIII noble metal hydride catalyst.