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SEELFS对MgO在γ-Al₂O₃载体表面自发单层分散的研究

Investigation of the Dispersion of MgO onto γ-Al₂O₃ by SEELFS

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【Author】 Huang XiaoHua Huang HuiZhong Jiang DeEn Zao BiYing (Institute of physical Chemistry,Peking University Beijing 100871)

【机构】北京大学物理化学研究所；北京大学物理化学研究所北京 100871；北京 100871；北京 100871；

【摘要】应用EXAFS类似原理,对不同负载量粉状MgO/γ-Al₂O₃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-Al₂O₃载体上表面自发单层分散。更多还原

【Abstract】 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更多还原