负载型双金属NiPd/rGO纳米催化剂的制备及其脱卤性能研究  

Study on the preparation and hydrodehalogenation performance of supported bimetallic NiPd/rGO nanocatalyst

作　　者：黄飞[1,2] 李瑞锋[1] 李长江[1] 王溪溪[1] 孙金余[1] Huang Fei;Li Ruifeng;Li Changjiang;Wang Xixi;Sun Jinyu(College of Chemistry and Chemical Engineering,Huangshan University,Huangshan 245041;The Key Laboratory of Functional Molecular Solids,Ministry of Education,College of Chemistry and Materials Science,Anhui Normal University,Wuhu 241002)

机构地区：[1]黄山学院化学化工学院,黄山245041 [2]安徽师范大学功能性分子固体材料教育部重点实验室,化学与材料科学学院,芜湖241002

出　　处：《化工新型材料》2022年第6期219-222,230,共5页New Chemical Materials

基　　金：安徽省高校自然科学一般项目(KJHS2020B10);安徽省高校自然科学重点项目(KJ2020A0688);国家级大学生创新创业训练计划项目(202110375020,202110375043)。

摘　　要：采用改进Hummers法合成了氧化石墨烯(GO),利用还原共沉淀法将金属Ni和Pd负载到还原氧化石墨烯(rGO)上,制备了分散均匀、大小均一的负载型双金属Ni_(1)Pd_(3)/rGO纳米催化剂,并通过透射电子显微镜、高分辨透射电子显微镜、X射线粉末衍射仪和电感耦合等离子原子发射光谱仪进行了表征。该催化剂用于脱卤反应时,转化率和选择性均大于99%,同时对卤代芳烃脱卤反应进行了底物拓展,说明该催化剂具有广泛的底物适应性;经过10次回收循环使用后,催化剂的转化率为97%,选择性仍大于99%,其结构和形貌没有发生明显改变,具有优异的催化活性、选择性和稳定性。Graphene oxide(GO)was synthesized by the modified Hummers method,Ni and Pd were supported on reduced graphene oxide(rGO)by reduction of coprecipitation,the supported bimetallic Ni_(1)Pd_(3)/rGO nanocatalyst with dispersed evenly and size uniformity was prepared.Moreover,the structure of nanocatalyst was characterized by transmission electron microscopy(TEM),high resolution transmission electron microscopy(HRTEM),X-ray power diffraction(XRD)and inductively coupled plasma optical emission spectrometry(ICP-OES).The conversion and selectivity of the catalyst were more than 99%in hydehalogenation reaction.Meanwhile,the substrate scope of hydehalogenated aromatics reaction showed that the catalyst had a broad substrate scope adaptability.The catalyst was recovered and used for ten times,the conversion of the catalyst was 97%,and selectivity was still more than 99%,the structure and morphology did not change significantly,it exhibited excellent catalytic activity,selectivity and stability.

关 键 词：还原氧化石墨烯 负载型双金属 纳米催化剂 脱卤反应 

分 类 号：O626[理学—有机化学]