摘要
采用去合金化法制备了多孔铜(PC),并以此为还原剂和模板与含有贵金属离子的溶液进行置换反应,简单有效地制备了多孔M/PC(M=Ag,Au,Pt,Pd)双金属催化剂,并对样品的形貌、结构和化学组成进行了表征,利用苯甲醇气相选择性催化氧化实验评价了其催化性能.实验结果表明,所制备的多孔铜基催化剂具有良好的双金属协同催化效应,对苯甲醇气相选择性氧化具有很好的催化活性和选择性,其中Ag/PC具有最优的催化性能.
We fabricated porous copper（PC） by dealloying A1 from Cu-AI alloy and obtained M/PC （M = Ag, Au, Pt, Pd） through galvanic replacement of Cu with noble metals using PC as reductant and template. The structural and chemical properties of the samples were characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM） with energy-dispersive X-ray spectroscopy（EDS）. The catalytic performance of PC and M/PC for gas-phase selective oxidation of benzyl alcohol was investigated. PC-based M/PC catalysts showed relatively high catalytic activity in oxidation of benzyl alcohol at high temperature, among which 1%Ag/PC had the best catalytic properties.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第4期900-905,共6页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:21171106
21176144)
山东省科技发展计划项目(批准号:2010GGX10314)资助
关键词
多孔铜
置换反应
双金属
苯甲醇
气相催化
Porous copper
Galvanic replacement
Bimetal
Benzyl alcohol
Aerobic oxidation
