季铵盐与双子季铵盐表面活性剂有机蒙脱土的制备及性能研究

doi:10.13218/j.cnki.csdc.2015.02.001

Abstract

Abstract: A series of organo-montmorillonite was prepared separately with cetyltrimethylammonium bromide (CTAB) and Gemini surfactant 1,2-bis(cetyldimethylammonio)ethane dibromide (16-2-16) as intercalation reagent on montmorillonite.Adsorption isotherms of the two kinds of surfactant on the montmorillonite were measured and the interlayer structure as well as surface structure of the organo-montmorillonites were characterized by FTIR,XRD and SEM.Performance of the two kinds of organo-montmorillonite with respect to adsorption of phenol in aqueous solution were investigated.Results showed that the maximum adsorption amount of both 16-2-16 and CTAB on montmorillonite are equivalent,but the interlayer structure of the two kinds of organo-montmorillonite is remarkably different.Two kinds of mechanism,the partition adsorption and the surface adsorption,exist in the process of adsorption of phenol in aqueous solution.The action of partition adsorption of the 16-2-16-montmorillonite is significantly greater than that of the CTAB-montmorillonite.

Key words: quaternary ammonium surfactant, organo-montmorillonite, structure of adsorption layer, partition adsorption, surface adsorption

CLC Number:

TQ423.12

SUN Chen-ya, GAO Yan-li, FANG Yun, QI Li-yun, JIANG Cui-cui. Preparation and properties of organo-montmorillonites modified separately with quaternary ammonium surfactant and Gemini quaternary ammonium surfactant[J].China Surfactant Detergent & Cosmetics, 2015, 45(2): 61-65.

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Preparation and properties of organo-montmorillonites modified separately with quaternary ammonium surfactant and Gemini quaternary ammonium surfactant

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