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单宁酸在硅灰石和透辉石表面上吸附机理的光电子能谱研究
作者:袁继祖 曹明礼 袁楚雄 
单位:武汉工业大学资源工程系  武汉工业大学资源工程系  武汉工业大学资源工程系 
关键词:单宁酸  硅灰石  透辉石  X射线光电子能谱  吸附机理 
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出版年,卷(期):页码:1992,20(3):280-285
DOI:
摘要:
借助于X射线光电子能谱研究了单宁酸在硅灰石和透辉石表面上的吸附机理,发现硅灰石和透辉石表面的钙离子(Ca~(2+))分别处于不同的化学环境,透辉石表面Ca~(2+)比硅灰石表面Ca~(2+)具有更高的氧化态,因此单宁酸更容易在透辉石表面产生化学吸附。透辉石和硅灰石对单宁酸这种吸附特性的差异是造成选择性抑制的根本原因。
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The bonding states of lattice metal ions on the diopside and wollastonite surface, and the tannic acid adsorption have been studied by X-ray photoelectron spectroscopy (XPS) respectively. It is observed that the calcium ions on the diopside surface have better oxidation states than those on the wollatonite surface. Therefore tannic acid is more readily adsorbed on diopside surface. Such difference in adsorption behaviours of tannic acid seems to be the basic cause of its limitation in selection.
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参考文献:
[1] 王濮,潘兆橹,翁玲宝等编著.系统矿物学(中册).北京:地质出版社,1984:319 [2] 刘世宏编著.X射线光电子能谱分析.北京:科学出版社,1988:36-53 [3] Carlson T A.光电子和俄歇能谱学.北京:科学出版社,1983:277-284 [4] Gaarenstroom S W, Winograd N. J Chem Phys, 1977; 67:3500 [5] 何子乐著.有机化学中硬软酸碱原理.北京:科学出版社,1987:2
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