FIELD: chemistry, pharmaceutics.
SUBSTANCE: invention relates to method of obtaining catalyst of dehydrating 4,5,6,7-tetrahydroindole into indole. Described is catalyst of dehydrating 4,5,6,7-tetrahydroindole into indole containing nickel sulphide applied on aluminium oxide, catalyst being dopated with sodium and chlorine ions and contains 0.30-2.00% of nickel, 0.20-1.50% of sulphur, 0.10-0.20% of sodium, 0.20-1.00% of chlorine. Also described is method of obtaining catalyst which lies in impregnation of aluminium oxide with nickel salt with further processing with metal sulphide at room temperature in water medium in presence of hydrochloric acid and surface-active substance. Catalyst is isolated by filtration without further washing, dopating of catalyst takes place, and dopants are fixed by means of thermal processing.
EFFECT: increase of mechanical strength and activity of catalyst, as well as increase of its service life.
4 cl, 1 dwg, 10 ex
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