摘要
分别以硼氢化钠和乙二醇为还原剂,经络合还原法制备了炭载钯(Pd/C)催化剂。透射电镜(TEM)和X射线粉末衍射谱(XRD)结果表明,以乙二醇为还原剂制备的Pd/C催化剂中Pd粒子具有较小的粒径、均匀的粒径分布和较大的相对结晶度,Pd粒子的平均粒径和相对结晶度分别为(4.2±2)nm和1.88。电化学测试结果显示,Pd/C催化剂具有较大的电化学活性面积,对甲酸氧化表现出较高的电催化活性和稳定性。
The carbon supported Pd（Pd/C） catalyst was prepared by way of complex reduction method respectively with sodium borohydride and ethylene glycol as reducing agents. The transmission electron microscopy （TEM） and X-ray diffraction（XRD） spectrum characterizations indicate that Pd nanoparticles of the Pd/C catalyst prepared by ethylene glycol have a smaller particle size, uniform particle size distribution and higher relative crystalinity. The average size and relative crystalinity of the Pd nanoparticles are as small as （4. 2±2） nm and 1.88, respectively. The electrochemical measurements demonstrate that the electrocatalytic activity and stability of the Pd/C catalyst prepared by ethylene glycol for formic acid oxidation are better than that of the Pd/C catalyst prepared by sodium borohydride.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2012年第7期665-669,共5页
Fine Chemicals
基金
国家自然科学基金(21003015
21103014)
江苏省企业博士集聚计划基金
江苏省科技支撑项目(BE201113)
常州大学科研基金(ZMF10020015)~~
关键词
炭载钯催化剂
络合还原
乙二醇
甲酸氧化
催化技术
Pd/C catalyst
complex reduction
ethylene glycol
formic acid oxidation
catalysistechnology
