| 粉石英表面化学的表征 |
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| 引用本文： | 吴宏海,崔天顺,黄庆民. 粉石英表面化学的表征[J]. 桂林工学院学报, 2001, 21(2): 157-161 |
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| 作者姓名： | 吴宏海 崔天顺 黄庆民 |
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| 作者单位： | 1. 华南理工大学环境科学与工程系, 广东广州,510640
2. 广西师范大学化学与化工系, 广西桂林,541004 |
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| 基金项目： | 广东省博士后科学基金项目，华南理工大学自然科学基金项目!(E5— 30 2 - 0 80 ) |
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| 摘 要： | 分析与探讨了粉石英的表面位及其质子化反应，对粉石英的表面电化学性质作了进一步研究，以NaNO3为支持电解质，测得粉石英的表面位密度约为4．3个／nm^2，表面零和NO3^-对石英的竞争吸附能力大小为Cl^-＞NO3^-，粉石英表面显弱酸性。
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| 关 键 词： | 粉石英 表面位 零电荷点 表面酸性强度 质子化反应 石英矿物 |
| 文章编号： | 1006-544X(2001)02-0157-05 |
| 修稿时间： | 2000-04-15 |
The token for surface chemistry of tripoli |
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| WU Hong-hai,CUI Tian-shun,HUANG Qing-min. The token for surface chemistry of tripoli[J]. Journal of Guilin University of Technology, 2001, 21(2): 157-161 |
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| Authors: | WU Hong-hai CUI Tian-shun HUANG Qing-min |
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| Affiliation: | WU Hong-hai1,CUI Tian-shun2,HUANG Qing-min1 |
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| Abstract: | The surface sites of tripoli (α-quartz) and its protonation arefirst analyzed and discussed, and then the surface electrochemical properties of tripoli are further investigated. The surface site density and the pHPPZC(pristine of zero charge) of tripoli (α-quartz) were determined in supporting electrolyte solution of NaNO3 to 4.3 sites/nm2,2.8,respectively.The lgKint1 and lgKint2， two surface protonation intrinsic constants of tripoli,are about -1.5, 7.0, respectively. The competing adsorption ability of Cl- and NO-3 ions on quartz surface in sequence was Cl->NO-3.The results show that the surface of tripoli is characteristic of weak acidity. |
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| Keywords: | tripoli surface site point of zero charge surface acidic strength |
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