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应用EXAFS类似原理,对MgO和Mg-Al复合氧化物[Mg(Al)O]中Mg k-边的SEELFS(Surface Extended EnergyLoss Fine Structure)一阶微分谱进行数据处理,得到了Mg近邻原子的配位距离.研究发现,同MgO比较,由于Al~(3+)的引入,使[Mg(Al)O]中的Mg—Mg配位距离增加,配位数降低,而Mg—O的配位环境基本不变.
The first order derivative spectrum of SEELFS (Surface Extended EnergyLoss Fine Structure) of Mg k-edge in MgO and Mg-Al composite oxide [Mg (Al) O] The results show that the coordination number of Mg-Mg in [Mg (Al) O] increases with the introduction of Al 3+, the coordination number decreases and the coordination of Mg-O Environment basically unchanged.