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焦磷酸钠在硅线石和微斜长石表面选择性吸附的机理研究
作者:张琪 方和平 
单位:武汉科技大学资源系 武汉工业大学资源与环境工程系 
关键词:焦磷酸钠 硅线石 微斜长石 ζ电位 X射线光电子能谱 
分类号:TQ170.2
出版年,卷(期):页码:1999,27(3):0-0
DOI:
摘要:
运用表面电性研究和X射线光电子能谱分析,探讨了焦磷酸钠在经Al3+和Fe3+活化后的硅线石和微斜长石表面上的选择性吸附机理,推断造成焦磷酸钠吸附特性差异的本质原因是微斜长石表面的Al3+具有更高的化学活性,进而导致焦磷酸钠优先在微斜长石表面吸附.研究结果表明:焦磷酸钠不仅与微斜长石矿物表面的金属离子发生化学吸附,而且还与矿浆中的金属离子反应生成难溶络合物并沉积在矿物表面,导致矿物强烈亲水
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The mechanism of selective adsorption of sodium pyrophosphate was studied by means of zeta_potential and X-ray photoelectron spectroscopy. The results show that sodium pyrophosphate can decrease the zeta_potential on the microcline surface much more than that on the sillimanite surface. It also shows that the difference of binding energy of Al2p on the surface of sillimanite and that of microcline causes a different chemical activation which greatly increases the selective adsorption of sodium pyrophosphate. Sodium pyrophosphate can not only be adsorped preferentially with the metallic ions on the surface of microcline, but react with the metallic ions producing undissolved complexed compound which precipitates on the surface of microcline.
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参考文献:
1肖立平.MRK型显微电泳仪在界面ζ_电位测定中的应用.中南矿冶学院学报,1980,14(2):87~932王典芬.X射线光电子能谱在非金属材料研究中的应用.武汉:武汉工业大学出版社,1995.167页3袁继祖,曹明礼.单宁酸在硅灰石和透灰石表面上吸附机理的光电子能谱研究.硅酸盐学报,1992,20(3):280~282
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