自支撑CNTs/SMF-Ni电极上电催化氧气氧化茴香醚合成茴香醛

以具有三维开放网络结构的薄层大面积烧结8 μm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%.

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

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.