Method for regenerating a hydrogenation catalyst, method for hydrogenating compounds comprising nitrile functions
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United States of America Patent
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Feb 11, 2003
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N/A
app pub date -
Feb 9, 2001
filing date -
Dec 29, 1997
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Abstract
The invention concerns a method for regenerating a hydrogenation catalyst, and hydrogenation methods carried out with a catalyst comprising at least one regenerated catalyst. More particularly, it concerns a method for regenerating Raney catalysts used in total or partial hydrogenating processes of compounds comprising nitrile functions into amine functions. Said method consists in treating the spent catalyst with a basic solution and optionally in subjecting said catalyst to hydrogenation before stripping to eliminate the impurities present on the catalyst. Thus, the regenerating method enables to recuperate up to 100% of the catalytic activity.
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