Structure, Physical Properties and Catalytic Performance of Cu-Based Catalysts for Selective Hydrogenation of C_4 Distillate

Cu based catalysts were prepared by co impregnating γ Al 2O 3 with solution of metal nitrates. The structure and physical properties of the catalysts were studied by XRD, XPS, SEM and H 2 TPR. The catalytic performance of the catalysts for selective hydrogenation of C 4 distillate was measured. The results showed that adding Co into Cu based catalyst can increase its ability for removing acetylenes. Addition of Ce increases the activity and selectivity of the catalysts, especially when Co amount is smaller. On 1%Co 2O 3 1%Ce 2O 3 5%CuO/ γ Al 2O 3 catalyst, the redundant vinyl acetylene was 0 001?2% and the loss of 1,3 butadiene was 0 47%. There exists the synergy between Cu and Co, which promotes the active components to diffuse onto the surface from the bulk of the catalysts, the CuO to be in non crystal state, the catalyst particles to become smaller, and the catalyst to be reduced easily. Therefore the multicomponent catalyst has better catalytic performance.