一种二次插层有机膨润土的制备及其结构表征  

Preparation of one kind of second-insert organic bentonite and its structure characterization

作　　者：冯辉霞[1] 张国宏[1] 邵亮[1] 赵阳[1] 王桂敏[2] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]兰州石油化工公司研究院,甘肃兰州730060

出　　处：《印染助剂》2008年第11期14-16,共3页Textile Auxiliaries

基　　金：国家教育部“春晖计划”基金资助项目(Z2005-1-62016)

摘　　要：用过渡金属盐(硝酸镍)和十六烷基三甲基溴化铵(CTAB)对自制钠基膨润土进行二次插层,得到了二次插层有机膨润土CTAB2-Ni1-MMT,在二次插层过程中,由于使用CTAB修饰膨润土前,先利用过渡金属元素插层膨润土,使膨润土的层间距相对增大,同时利用金属离子的配位作用,使CTAB大分子在不同程度上更容易进入膨润土层间,其烧失率达到22%.用傅立叶红外变换光谱(FT-IR)和X射线衍射仪(XRD)对其进行结构表征,结果表明,CTAB已进入膨润土层间,该有机土的层间距由1.415nm增大到3.002nm.The second-insert organic bentonite CTAB2-Ni1-MMT was prepared by second-inserting of self-made Na-bentonite with transition metal salt （nickelous nitrate） and cetyl trimethyl ammonium bromide （CTAB）. The layer-to-layer spacing was increased by inserting transition metal element into the bentonite before CTAB modifying it. Combined with the coordination of metal ion, CTAB molecule was much eaiser to enter interlayer of bentonite. The burning rate of the second-inserted organic bentonite can reach 22%. The structure of the prepared bentonite was characterized by FT-IR and XRD. The results indicated that CTAB entered the interlayer and the layer-to-layer spacing of this second-inserted organic bentonite increased from 1 .415 nm to 3.002mm.

关 键 词：膨润土 二次插层 有机土 表面修饰 层间距 

分 类 号：TQ314.246[化学工程—高聚物工业]