自支撑CNTs／SMF-Ni电极上电催化氧气氧化茴香醚合成茴香醛  

Electrocatalytic Performance of Self-Supporting CNTs/SMF-Ni Hybrid Electrodes for the Aerobic Oxidation of p-MT to p-MBA

作　　者：方玉珠[1] 姜芳婷[1] 路勇[1] 

机构地区：[1]华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海200062

出　　处：《物理化学学报》2011年第8期1854-1858,共5页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20973063,21076083);国家重点基础研究发展规划项目(973)(2011CB201403);教育部"博士点专项基金"(20090076110006);上海市科委"科技启明星(跟踪)计划"(10HQ1400800);上海市重点学科建设项目(B409)资助~~

摘　　要：以具有三维开放网络结构的薄层大面积烧结8μm金属纤维(SMF-Ni,SMF-SS(316L不锈钢))为基底,通过乙烯催化化学气相沉积在金属纤维表面生长碳纳米管(CNTs)的方法,制备了整体式CNTs/SMF-Ni(CNTs:50%(w))和CNTs/SMF-SS(CNTs:40%(w))复合材料.研究表明,以CNTs/SMF-Ni为阴极材料、SMF-SS为阳极材料,具有很高的直接电催化氧气氧化对甲氧基甲苯(茴香醚)合成对甲氧基苯甲醛(茴香醛)的活性,反应物转化率和产物选择性分别达95.4%和96.5%,电流效率可超过80%.A promising macroscopic carbon nanotube （CNT） system was developed by catalytic chemical vapor deposition through CNT growth on a three-dimensional network of sinter-locked conductive metal microfibers （i.e., SMF-Ni using 8 μm nickel fibers and SMF-SS using 8 μm SS316L fibers）. The electrocatalytic performance of CNTs/SMF-Ni [CNTs： 50% （w）] and CNTs/SMF-SS [CNTs： 40% （w）] hybrids were examined as electrodes in the aerobic oxidation of p-anisaldehyde （p-MT） to p-cresol methyl ether （p-MBA）. An excellent conversion of 95.4% and a target product selectivity of 96.5% can be obtained with a very high electric current efficiency of 〉80% in the presence of air at a current density of 16 mA-cm-2 in a methanol/p-MT/KF electrolyte using SMF-SS and CNTs/SMF-Ni as an anode and a cathode, respectively.

关 键 词：碳纳米管 电化学氧化 对甲氧基苯甲醛 对甲氧基甲苯 

分 类 号：TQ655[化学工程—精细化工]