Influence of Cation Exchange Capacity and Numbers of Alkyl-Chains on the Property of Organo-Montmorillonites

• 责任者：Ma Yuehong (Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; He Hongping
• 刊名：Acta Mineralogica Sinica
• 出版年：2010
• 卷期：30(1)
• 关键词：阳离子交换容量 ; cation exchange capacity ; 蒙脱石 ; montmorillonite
• 页码：p.9-17
• 图表：6 illus., 3 tables, 26 refs.
• 分类号：0700
• issnNo：ISSN1000-4734
• isbnNo：CN52-1045/P

Both the natures of surfactant and crystal chemistry of montmorillonite affect the property of organo-montmo- rillonites. To study their correlation, three montmorillonites having different cation exchange capacities and four types of surfactants were used to synthesize organo-montmorillonites at different concentration.  The basal spacings were obtained from XRD patterns.  Thermal stability as well as the adsorption capacities of surfactants to montmorillonites was discussed according to the TG-DTG data. The results suggest that the CEC does not greatly impact basal spacing whereas dramatically influence adsorption capacities which increased with the increasing CEC.