A novel activated fixed-bed Raney nickel catalyst for hydrogenation of unsaturated organic compounds was prepared by extruding the Ni-Al alloy powder with pseudoboehmite as binding material

calcining the extrudates in air at a high temperature and leaching out the aluminum with caustic solution.The effects of binding material contents and calcination conditions (calcination temperature and calcination time) on catalyst properties and catalytic activity were studied with TG-DTA

XRD

BET

SEM analyses and model reaction of benzene hydrogenation.The experimental results showed that the recommended pseudo-boehmite contents was 20%

and that the novel fixed-bed Raney nickel catalyst might acquire lower resultant α-Al2O3 content

higher particle compressive strength and higher benzene hydrogenation activity by calcining the alloy extrudates at 860 ℃ for 1—2 h in air.SEM and BET results showed that the catalysts possessed abundant porous structures.