季铵盐表面活性剂有机蒙脱土的制备及其苯酚吸附行为研究

doi:10.13218/j.cnki.csdc.2016.02.001

Abstract

Abstract: Cationic surfactant dihexadecyldimethylammonium bromide (DHDMA) and Gemini surfactant 1,2-ethylene bis(cetyldimethyl ammonium bromide) (16-2-16) were used separately to prepare two kinds of organo-montmorillonite DHDMA-MMT and 16-2-16-MMT.The products were characterized by FT-IR,X-ray diffraction (XRD) and thermal gravimetric analysis (TGA).Phenol adsorption behavior of the two kinds of product was investigated and compared.Experiment results demonstrated that the organic carbon content of the two kinds of product is close to each other at the same surfactant loadings while the adsorption amount of phenol and normalized organic carbon content adsorption coefficient of 16-2-16-MMT is remarkably higher than that of DHDMA-MMT.In view of that same carbon chains are containing in the molecule structure of the two kinds of product,and the structure difference of the two surfactants is only that 16-2-16 owns an extra quaternary ammonium headgroup as comparing with DHDMA,it is reasonable to conclude that the quaternary ammonium headgroup plays an important role in the process of adsorbing phenol from aqueous solution by the organo-montmorillonite.

Key words: dihexadecyldimethylammonium bromide, 1,2-ethylene bis(cetyldimethyl ammonium bromide), organo-montmorillonite, structure of adsorption layer, adsorption performance

CLC Number:

TQ423.12

GAO Yan-li,SUN Chen-ya,QI Li-yun,FANG Yun. Preparation of organo-montmorillonite modified with quaternary ammonium surfactant and its adsorption behavior for phenol[J].China Surfactant Detergent & Cosmetics, 2016, 46(2): 61-65.

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Preparation of organo-montmorillonite modified with quaternary ammonium surfactant and its adsorption behavior for phenol

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