| MoO3和CuCl在γ-Al2O3表面分散速度和分散机理的研究 |
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| 引用本文： | 徐献平,谢有畅,赵璧英,唐有祺.MoO3和CuCl在γ-Al2O3表面分散速度和分散机理的研究[J].物理化学学报,1990,6(3):263-268. |
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| 作者姓名： | 徐献平 谢有畅 赵璧英 唐有祺 |
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| 作者单位： | Institute of Physical Chemistry, Peking University |
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| 摘 要： |
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| 关 键 词： | 三氧化钼 氯化亚铜 分散 氧化铝 水 |
| 收稿时间： | 1990-01-04 |
| 修稿时间： | 1990-02-14 |
Study on Dispersion Speed and Mechanism of MoO3 and CuCl on the Surface of γ-Al2O3 |
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| Xu Xian-Ping,Xie You-Chang,Zhao Bi-Ying,Tang You-Qi.Study on Dispersion Speed and Mechanism of MoO3 and CuCl on the Surface of γ-Al2O3[J].Acta Physico-Chimica Sinica,1990,6(3):263-268. |
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| Authors: | Xu Xian-Ping Xie You-Chang Zhao Bi-Ying Tang You-Qi |
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| Institution: | Institute of Physical Chemistry, Peking University |
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| Abstract: | It has been shown that many oxides and salts can disperse spontaneously onto supports with large surface area~1]. A typical example studied widely is the dispersion of MoO_3 on γ-Al_2O_3. However, the research work about the dispersion mechanism and kinetics is quite few.Knozinger etc.~2] suggested that the dispersion of MoO_3 onto the surface of γ-Al_2O_3 may occur through a "gas phase transport" mechanism mainly by assuming an intermediate MoO_2(OH)_2(g), and the presence of water is necessary. Their conclusion was based on a fact that after heating a mixture of MoO_3 and γ-Al_2O_3 in the presence of H_2O vapour at 450 ℃, the characteristic peak at 950 cm~(-1) of monolayer dispersed MoO_3 in Laser Raman Spectrum (in situ) appears, but after heating the mixture in dry oxygen, it can not be observed... |
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