| 用EXAFS研究NiO在γ-Al2O3表面上的分散 |
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| 引用本文： | 金祥林,蔡小海,葛志红,谢有畅,唐有祺,赵雅琴,陆坤权.用EXAFS研究NiO在γ-Al2O3表面上的分散[J].物理化学学报,1989,5(2):206-209. |
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| 作者姓名： | 金祥林 蔡小海 葛志红 谢有畅 唐有祺 赵雅琴 陆坤权 |
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| 作者单位： | Institute of Physical Chemistry; Peking Usiversity
Institute of Physics; Academia Sinica; Beijing |
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| 摘 要： | 本文使用EXAFS方法研究NiO在γ-Al_2O_3的表面上的分散情况。文章讨论了Ni含量为7%、13%、18%、26%、35%的NiO/γ-Al_2O_3体系的径向结构函数图以及Ni含量为13%、26%的NiO/α-Al_2O_3样品的径向结构函数图,认为NiO能在γ-Al_2O_3表面上成单层分散。分散后的Ni-O距离接近NiO晶体的Ni-O距离,表明Ni离子和γ-Al_2O_3表面上的氧有很强的相互作用。
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| 关 键 词： | NiO r－Al2O3 分散 |
| 收稿时间： | 1987-12-02 |
| 修稿时间： | 1988-05-15 |
INVESTIGATION OF DISPERSION OF NICKEL OXIDE ONTO THE SURFACE OF γ-ALUMINA BY EXAFS |
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| Jin Xianglin,Cai Xiaohai,Ge Zhihong,Xie Youchang,Tang Youqi
Zhao Yaqin,Lu Kunquan.INVESTIGATION OF DISPERSION OF NICKEL OXIDE ONTO THE SURFACE OF γ-ALUMINA BY EXAFS[J].Acta Physico-Chimica Sinica,1989,5(2):206-209. |
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| Authors: | Jin Xianglin Cai Xiaohai Ge Zhihong Xie Youchang Tang Youqi
Zhao Yaqin Lu Kunquan |
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| Institution: | Institute of Physical Chemistry; Peking Usiversity
Institute of Physics; Academia Sinica; Beijing |
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| Abstract: | EXAFS spectroscopy has been used to investigate the dispersion of NiO onto the surface of γ-Al_2O_3. The comparison of the Fourier transformed EXAFS modulations of 7, 13, 18, 26, 35 wt% Ni/γ-Al_2O_3 and 13, 26 wt% Ni/α-Al_2O_3 suggests that NiO can disperse as a monolayer onto the surface of -γAl_2O_3. The Ni—O coordination distance which is near the Ni—O distance in NiO crystal suggests that the Ni ion interacts strongly with the oxygen on the γ-Al_2O_3 surface. |
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