| abstract |
FIELD: organic chemistry, chemical technology, catalysts. SUBSTANCE: invention relates to method for partial hydrogenation of dinitrile to aminonitrile. Method involves contact stage of dinitrile of the general formula R(CN) 2 wherein R represents alkylene group with hydrogen-containing medium in the presences of (a) solvent containing liquid ammonia, alcohol or both; and catalytic composition (b) containing hydrogenating catalyst that can be in form of spongy metal or applied on carrier; and (c) addition for increase aminonitrile yield and/or for enhanced selectivity by aminonitrile taken among the group consisting of: carbon oxide, tetraalkylammonium hydroxide compound, tetraalkylphosphonium hydroxide compound, metal carbonyl polycentric cluster comprising (i) at least two metal atoms inside cluster; (ii) at least three bridges between metal atoms inside cluster; (iii) at least one carbonyl group linked with metal atom wherein metal represents metal of VIII group of periodic system of elements; organic isonitrile; cyanide compound comprising at least one cyano-group linked with atom unlike from carbon atom; and fluoride compound. Invention relates also to catalytic composition wherein hydrogenating catalyst has spongy metal form and treated preliminary with addition. Invention provides increasing the yield and selectivity by aminonitrile. EFFECT: improved preparing method. 31 cl, 1 tbl, 53 ex |