Zr/Al基柱撑蒙脱石矿物材料的红外光谱研究  

INFRARED SPECTRA OF Zr/Al-PILLARED MONTMORILLONITE MINERAL MATERIAL

作　　者：管俊芳[1] 狄敬茹[2] 于吉顺[3] 陆琦[3] 

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070 [2]中国地质大学珠宝学院,武汉430074 [3]中国地质大学测试中心,武汉430074

出　　处：《硅酸盐学报》2005年第2期220-224,共5页Journal of The Chinese Ceramic Society

基　　金：地质行业科学技术发展基金(959620)资助项目。

摘　　要：在室温,用取代法配制了稳定的Zr/Al二元聚合阳离子(柱化剂).以蒙脱石为基质粘土,用稀溶液法制备Zr/Al基柱撑蒙脱石,XRD表征d001值为1.9～2.0 nm;加温到500 ℃并恒温2 h后, d001值为 1.9 nm;材料的热稳定性达到500 ℃以上.通过室温下和加温后不同材料的FTIR分析,发现Zr/Al二元聚合阳离子交换蒙脱石矿物层间域的阳离子后,改变了蒙脱石硅氧四面体中顶氧和底氧伸缩振动的强度,Zr/Al二元聚合阳离子和硅氧四面体中的底氧发生了化学键合,形成了稳定的[Si-O]…[H(O)-Al(Zr)]氢键,从理论上解释了Zr/Al基柱撑蒙脱石热稳定性较高的原因.The stable Zr/Al binary polycations (agent) were synthesized at room temperature by substitution methods. The Zr/ Al pillared montmorillonite was prepared by solution method using montmorillonite as base clay. The d001 value characterized by XRD is 1.9-2.0 nm and it is 1.9 nm after sintering at 500°C for 2 h. The thermal stability of the pillared montmorillonite can be up to 500°C. Fourier transform infrared spectroscopy shows that the exchanging of Zr/Al binary polycations for interlayer cations of montmorillonite affect the stretching vibration of Si-O tetrahedron in montmorillonite. The stable[Si-O][H(O)-Zr(Al)] hydrogen bond is formed between Zr/Al binary polycations and[SiO4] tetrahedrons of montmorillonite. It explains theoretically the reason of high thermal stability for Zr/Al pillared montmorillonite.

关 键 词：锆/铝二元聚合阳离子 柱撑蒙脱石 红外光谱 

分 类 号：P578.94[天文地球—矿物学]