FIELD: organic chemistry. SUBSTANCE: described is method of preparing aliphatic alpha, omega aminonitriles by partial hydrogenation of aliphatic alpha, omega dinitriles at temperatures form 100 to 250 C, at pressures from 0.01 to 3 MPa and hydrogen to dinitrile molar ratio from 2:1 to 300:1 in the presence of substrate-based nickel catalyst in gas phase. Method comprises hydrogenation being carried out in fixed bed reactor containing molded catalyst with 0.03 to 10 kg of dinitrile per 1 kg of catalyst per hour. The claimed method makes it possible to increase loading of catalyst without deterioration of selectivity thereof. EFFECT: more efficient preparation method. 3 cl, 8 ex, 1 tbl
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