摘要
首先,采用水热法合成WO3-x前驱体,再用浸渍法和热分解法制得Pt/WO3-x纳米催化剂。利用XRD、TEM以及H2-TPR测试方法对其进行了表征分析。结果表明,Pt纳米颗粒在WO3-x表面分散性好,并且Pt纳米颗粒与WO3-x之间存在较强的相互作用。在对硝基苯酚加氢反应中,与Pt/Al2O3纳米催化剂相比,Pt/WO3-x纳米催化剂在300℃焙烧后显示出优越的催化性能,这可能归因于金属与金属氧化物之间的强相互作用。
WO3-x precursor was synthesized by water bath method.Pt/WO3-x nanocatalyst was prepared by impregnation and thermal decomposition.XRD,TEM and H2-TPR were used to characterize them. The results show that Pt nanoparticles are well dispersed on the surface of WO3-x ,and there is a stronger interaction between Pt nanoparticles and WO3-x .In the hydrogenation of pnitrophenol,with the comparative activity of Pt/Al2O3 nanocatalyst,the Pt/WO3-x nanocatalyst shows superior catalytic performance after calcination at 300 ℃,which may attribute to a strong interaction between the metal and the metal oxide.
作者
于志勇
余小龙
华达银
尹宏峰
YU Zhi-yong1,2 , YU Xiao-long2 , HUA Da-yin1 , YIN Hong- feng 2(1.Faculty of Science, Ningbo University, Ningbo 315211, China ; 2.Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Science, Ningbo 315201, Chin)
出处
《化学试剂》
CAS
北大核心
2018年第5期422-424,448,共4页
Chemical Reagents
基金
国家自然科学基金资助项目(11375091)
浙江省自然科学基金资助项目(LY15B03005)
