中文摘要：

以氟离子插层的水滑石LDH-F为载体,用逐滴浸渍法制备了新型Pd/LDH-F催化剂,并用其催化溴代芳烃的Heck和Suzuki偶联反应. 用X射线衍射表征了催化剂的晶相,以等离子体发射光谱测定了溶剂中钯的流失量. 结果表明,对于Heck反应,在无配体存在和低钯用量（Pd/溴代芳烃摩尔比为0.001）的情况下, Pd/LDH-F的催化性能优于其它载体负载的Pd催化剂,显示出很高的催化活性和选择性. 在140 ℃和12 h的条件下, Pd/LDH-F催化溴苯与苯乙烯Heck反应产物的收率可达86%, 反应后催化剂经过分离,可循环使用四次其催化活性基本不变. 在DMF/水摩尔比为0.5的混合溶剂中,在室温和3 h 的条件下, Pd/LDH-F （Pd/溴代芳烃摩尔比为0.005）催化溴苯与苯基硼酸盐的Suzuki反应中,目标产物收率为99%.

英文摘要：

The palladium catalyst supported on fluoride pillared layered double hydroxide （LDH-F） was prepared by the incipient wetness method, and it was used to catalyze the Heck and Suzuki coupling reactions of aryl bromides, The structure of the Pd/LDH-F catalyst and the leaching of Pd in the solution were characterized by X-ray diffraction and inductively coupled plasma. With a small palladium dosage （Pd/aryl bromide molar ratio of 0.001） and no ligand, Pd/LDH-F exhibits higher catalytic activity and selectivity than the catalysts supported on other carriers for the Heck reaction of aryl bromides with styrene. The Pd/LDH-F catalyst can be easily separated from the reaction mixture and reused four times without loss in activity. Under the conditions of Pd/aryl bromide molar ratio of 0.005, room temperature and 3 h, the Pd/LDH-F catalyst can catalyze the Suzuki reaction of bromobenzene with a product yield of 99 %.