Selective hydrogenation of dinitrile to omega-aminonitrile and supported rhodium-containing catalyst therefor
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United States of America Patent
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Jun 21, 1983
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N/A
app pub date -
Oct 26, 1981
filing date -
Oct 26, 1981
priority date (Note) -
Expired
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Abstract
A dinitrile is hydrogenated to an omega-aminonitrile with hydrogen in an aprotic solvent with a supported rhodium catalyst and ammonia present. The catalyst is prepared by hydrolyzing a rhodium (III) halide with strong aqueous base at elevated temperatures, drying the supported rhodium hydroxide at elevated temperatures and hydrogenating the dried product at elevated temperatures. High conversions, selectivity to aminonitrile and catalyst recyclability are achieved.
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