Method for preparing hexanediamine piperidine, catalyst and preparation method thereof

The invention belongs to the field of preparing an optical stabilizer intermediate, and particularly relates to a method for preparing hexanediamine piperidine, a catalyst and a preparation method thereof. The method comprises the following steps: by taking TAA and hexanediamine as raw materials, preparing hexanediamine piperidine by using a lead-bearing raney copper catalyst, slowly leading anhydrous ethanol into the bottom of the solution to be azeotropic with water in the reactive dehydration step, forming steam stripping under vacuum condition, so that the yield of the hexanediamine piperidine can be increased. The catalyst for preparing the hexanediamine piperidine takes copper, aluminum or silicone as active ingredients and lead and at least one of chromium, nickel, molybdenum and cobalt as auxiliaries, the catalytic activity is proper, the catalyst not only can rapidly achieve the reaction endpoint, but also cannot generate a great amount of side product such as pipradrol; and the catalyst is high in h