SEELFS对MgO在γ-Al_2O_3载体表面自发单层分散的研究  

Investigation of the Dispersion of MgO onto γ-Al_2O_3 by SEELFS

作　　者：黄小华[1] 黄惠忠[1] 江德恩[1] 赵璧英[1] 

机构地区：[1]北京大学物理化学研究所,北京100871

出　　处：《现代仪器》2001年第1期39-41,共3页Modern Instruments

摘　　要：应用EXAFS类似原理,对不同负载量粉状MgO/γ-Al_2O_3负载型催化剂Mg-K边的SEELFS(Surface Extended Energy Loss Fine Structure)一阶微分谱进行数据处理,得到了Mg-Mg和Mg-O键长。研究发现,MgO在γ-Al_2O_3载体上表面自发单层分散。SEELFS mechanism was outlined and the Fourier transform function of Mg k-edge of powder MgO and r-Al2O3 supported MgO with different loading were obtained. The variation of peak position and peak intensities in Mg-O and Mg-Mg verified MgO was spontaneously monolayer dispersed onto r-Al2O3

关 键 词：SEELFS 表面扩展能量损失精细结构 负载型 氧化镁 三氧化二铝催化剂 单层分散 

分 类 号：TQ426[化学工程] TH838[机械工程—仪器科学与技术]