摘要
凹凸棒石粘土具有吸附性、载体性、阳离子交换能力、流变性、催化性等物化性质。同时,酸、热、提纯和有机改性等处理方式会对凹凸棒石粘土物化性质产生影响,能显著改善和提高凹凸棒石粘土的物化性质。其中,酸改变其带电性、吸附活性、阳离子交换容量和比表面积;随着温度的升高,热处理使其比表面积不断提高到最大值再急剧下降;提纯可以改善胶体性能;有机改性可以使粘土颗粒表面由完全的亲水性转变为部分疏水性,改变比表面积和阳离子交换容量,增强胶体悬浮性能。
Attapulgite clay has adsorption, carrier, cation exchange capacity, rheological properties, catalysis and other physical and chemical properties. Meanwhile, the treatment of acid, heat, salt exchange, purification and organic modification can effect and significantly improve the physicochemical properties of attapulgite clay. Among them, the acid changes its charged, adsorption, cation exchange capacity and specific surface area; With the rise of temperature, heat makes its surface area increasing to a maximum and then declined sharply; Purification improves colloid performance; Organic modification makes the particle surface of clay translate from full hydrophobic to part hydrophilic, changes the specific surface area and cation exchange capacity, enhances the performance of colloidal suspension.
出处
《中国非金属矿工业导刊》
2013年第1期24-26,47,共4页
China Non-Metallic Minerals industry
基金
甘肃省住房与城乡建设厅科技(JK2012-59)
甘肃省自然基金(1014RJZA043)
关键词
凹凸棒石粘土
吸附性
酸
热
盐交换
提纯
有机改性
attapulgite clay
adsorption
acid
heat
base exchange
purification
organic modification
