双十二烷基二甲基溴化铵改性蒙脱土及其对农药啶虫脒的吸附  

Didodecyldimethylammonium bromide modified montmorillonite and adsorption of pesticide acetamiprid on it

作　　者：张永利[1] 李嘉诚[1] 冯玉红[1] 颜慧琼[2] 向飞[1] 陈秀琼[2] 

机构地区：[1]海南大学材料与化工学院,海南海口570228 [2]海南师范大学化学与化工学院,海南海口571158

出　　处：《日用化学工业》2015年第6期323-327,共5页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目(21366010);"十二五"国家科技支撑计划资助项目(2011BAE06B04-7);海南省重点科技计划资助项目(ZDXM20120003)

摘　　要：为了提高钠基蒙脱土(Na-MMT)对有机农药的负载性能,利用表面活性剂双十二烷基二甲基溴化铵(DDAB)阳离子交换改性Na-MMT,采用超声-高速剪切法促进DDAB的插层反应。并采用X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FTIR)、热重分析仪(TG)、透射电镜(TEM)以及拉曼光谱仪(Raman)对样品的结构和性能进行了分析。结果表明,DDAB已成功插层到蒙脱土片层间,使其层间距显著增大。农药吸附试验表明,改性后的蒙脱土对啶虫脒有良好的吸附性能。In order to improve loading performance for adsorption of organic pesticide acetamiprid on sodium montmorillonite （ Na - MMT ） , the latter was modified by surfactant didodecyldimethylammonium bromide （DDAB） via the cation exchange mode, using ultrasonic -high -speed shearing method to promote its intercalation reaction. Then, the structure and properties of the modified montmorillonite were characterized and determined by means of X - ray diffractometer （ XRD ） , Fourier transform infrared spectrometer （ FTIR ） , thermogravimetric analysis （TG）, transmission electron microscopy （TEM） and Raman spectroscopy （Raman）. Experimental results showed that the DDAB has been successfully intercalated into the montmorillonite interlayer, significantly increasing its interlayer spacing. Pesticide adsorption test result showed that the modified montmorillonite displays better loading performance for adsorption of acetamiprid.

关 键 词：双十二烷基二甲基溴化铵 钠基蒙脱土 改性 

分 类 号：O647.3[理学—物理化学]