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| 12-钼磷酸与γ-Al2O3载体的相互作用 | |
| 引用本文： | 郑寿荣,戚海华,颜其洁,傅献彩.12-钼磷酸与γ-Al2O3载体的相互作用[J].物理化学学报,1994,10(6):521-525. |
| 作者姓名： | 郑寿荣 戚海华 颜其洁 傅献彩 |
| 作者单位： | Department of Chemistry, Nanjing University, Nanjing 210008 |
| 摘 要： | 应用酸碱滴定、X射线衍射(XRD)、激光拉曼(LRS)和顺磁共振(EPR)等方法研究了磷钼酸(PMo_(12))与γ-Al_2O_3载体间的相互作用．结果表明，PMo_(12)在γ-Al_2O_3上随负载量增加出现三种不同的分散状态，据此提出了PMo_(12)在γ-Al_2O_3上的铺展模型． |
| 关 键 词： | 12-钼磷酸 γ-Al2O3 铺展 相互作用 |
| 收稿时间： | 1993-02-19 |
| 修稿时间： | 1993-05-19 |
A Study of the Interaction Between 12-Molybdophosphoric Acid and γ-Alumina |
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| Zheng Shourong,Qi Haihua,Yan Qijie,Fu Xiancai.A Study of the Interaction Between 12-Molybdophosphoric Acid and γ-Alumina[J].Acta Physico-Chimica Sinica,1994,10(6):521-525. | |
| Authors: | Zheng Shourong Qi Haihua Yan Qijie Fu Xiancai |
| Institution: | Department of Chemistry, Nanjing University, Nanjing 210008 |
| Abstract: | 12-moybdophosphoric acid (PMo_(12)) supported on γ-alumina has been studied by XRD, LRS EPR and titration methods. The results reveal that as PMo_(12) loading is lower or equal to the monolayer coverage, there is a strong interaction between PMo_(12) and γ-alumina, PMo_(12) is adsorbed by γ-alumina irreversibly and a tetrahedral coordinatha Mo-O-Al species is observed. Beyond monolayer coverage, the PMo_(12) is dispersed on γ-alumina as primary structure, and a secondary structure PMo_(12) is observed at more higher loading. The EPR results show that the stability of the supported PMo_(12) is lower than that of the unsupported PMo_(12) and the stability of PMo_(12) in the above three diffrent states is not the same. A model of PMo_(12) dispersed on γ-alumina is suggested. |
| Keywords: | 12-molybdophosphoric acid γ-alumina Dispersion Interaction |
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