Abstract：Cu(OH)2/Al2O3 precursors were synthesized by equal volume impregnation, and Cu-based catalysts supported with Al2O3 were prepared by acetylene treatment and hydrogen reduction. X-ray diffraction (XRD), transmission electron microscopy (TEM), N2-physical adsorption were used to characterize the catalyst precursor and the catalyst, and the effect of copper hydroxide loading, acetylene treatment temperature, acetylene treatment time and hydrogen reduction temperature on the selective hydrogenation performance of the prepared catalyst were systematically investigated in a fixed-bed reactor. The results showed that the catalyst with high activity for the selective hydrogenation of acetylene was obtained when the Cu(OH)2 loading was 30% (mass fraction), the acetylene treatment temperature was 140 ℃, the acetylene treatment time was 2 h and the hydrogen reduction temperature was 150 ℃. When the reaction temperature was 115 ℃, the conversion of acetylene was 98.50%, the selectivity of ethylene was 66.15%, the selectivity of ethane was 15.75% and the selectivity of C4 was 18.10%.
RU Xuyang,ZENG Aonan,WANG Yao et al. Preparation of Al2O3 Supported Cu-Based Catalyst and Its Catalytic Performance in Selective Hydrogenation of Acetylene[J]. Chemical Reaction Engineering and Technology, 2023, 39(1): 11-19.
