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以竹纤维为原料制备得到一种新型竹纤维负载钯催化剂,通过X射线光电子能谱(XPS)、X射线衍射(XRD)、热重分析(TG)、电感耦合等离子体原子发射光谱(ICP)、透射电镜(TEM)等技术对催化剂进行了表征,并将其成功应用于催化四苯硼钠与卤代芳烃的交叉偶联反应中.该竹纤维负载钯催化剂具有良好的催化活性,当体系以PEG 400和水(V∶V=1∶1)为溶剂,NaHCO_3为碱,在85℃条件下能以较好的产率获取联芳烃类化合物.该方法具有条件温和,反应时间短且收率高,催化剂经简单过滤即可循环使用等优点.
A new type of bamboo fiber supported palladium catalyst was prepared from bamboo fiber by XPS, XRD, TG, ICP (Inductively Coupled Plasma Atomic Emission Spectroscopy) , And transmission electron microscopy (TEM) were used to characterize the catalysts and successfully applied in the cross-coupling reaction of sodium tetraphenylborate with halogenated aromatic hydrocarbons. The bamboo fiber supported palladium catalyst has good catalytic activity. When the system Using NaHCO 3 as base and PEG 400 and water (V: V = 1: 1) as solvent, the biaryl aromatic compounds can be obtained in good yields under the conditions of 85 ℃ .The method has the advantages of mild conditions, short reaction time, High rate, the catalyst can be recycled by simple filtration and other advantages.