Preparation method of 4-aminocyclohexanol

The present invention provides a 4-aminocyclohexanol preparation method, which comprises that 4-aminophenol is subjected to catalytic hydrogenation in the presence of a catalyst on a fixed bed reactor to prepare 4-aminocyclohexanol, the catalyst is Ru-M/Al2O3, the active component of the catalyst is Ru, the auxiliary agent is M, M is one of Rh, Pd, Pt and Ni, and the catalyst is Ru-M/Al2O3. And carrying out gas-liquid separation on the product after catalytic hydrogenation, salifying the obtained liquid by using hydrochloric acid to separate out a solid, and neutralizing the solid by using alkali to obtain the trans-4-aminocyclohexanol. When the 4-aminocyclohexanol is prepared by the method disclosed by the invention, a qualified trans-4-aminocyclohexanol product with high purity and a trans-form proportion of more than or equal to 99.5% can be obtained. The catalyst used in the method is high in activity, good in selectivity and high in trans-form proportion; the catalyst is long in service life while the ca