【摘要】 以γ-AlOOH为原料，采用球磨法制备得到α-Al₂O₃载体，与传统焙烧法制备的α-Al₂O₃载体相比，比表面积更大，达到70.7 m²·g^-1。通过浸渍法制得Pd/α-Al₂O₃催化剂，采用XRD、氮气物理吸附、NH₃-TPD、H₂-化学吸附、TEM等方法对载体和催化剂进行表征，并在CO氧化偶联反应中对催化剂的催化活性进行评价。结果表明，制备的Pd/α-Al₂O₃催化剂在CO氧化偶联反应中具有出色的催化活性，草酸二甲酯时空收率达到2 175 g·（L·h）^-1。更多还原

【Abstract】 α-Al₂O₃ support（Al₂O₃-B） was prepared by ball-milling method using γ-AlOOH as raw material.Compared with the α-Al₂O₃ prepared by calcination, the surface area of Al₂O₃-B was larger, reaching 70.7 m²·g^-1.Pd/α-Al₂O₃ catalyst（Pd/Al₂O₃-B） was synthesized by impregnation.The catalyst was characterized by X-ray diffraction（XRD）,N₂ adsorption-desorption, NH₃-temperature-programmed desorption（TPD） and transmission electron microscopy（TEM） and tested in the CO oxidative coupling to dimethyl oxalate reaction.Pd/Al₂O₃-B showed wonderful catalytic activity in the CO oxidative coupling reaction, space-time yield of dimethyl oxalate reaching 2 175 g·（L·h）^-1.更多还原