摘要
针对普通的蒙脱石有机改性方法耗能大、需要时间长的缺点,开发了一种高效节能改性工艺。以十六烷基三甲基溴化铵(CTAB)为改性剂采用微波辐射法对蒙脱石进行了湿法有机改性,以苯酚的吸附效果作为评价指标对制备工艺进行了优化,并采用XRD、N_2吸附-脱附、DTA/TG和傅里叶红外光谱方法对改性前后蒙脱石的表面和体相结构进行了表征。结果表明,微波法可以在2 min内使CTAB有效地进入蒙脱石层间,而不改变蒙脱石自身的结构,并可将普通加热有机改性蒙脱石对苯酚的吸附性能提高10%左右,对200 mg/L苯酚的吸附去除率可达到81.77%。由微波改性方法获得的蒙脱石层间距d_(0.01,可从1.538 nm增加到2.360 nm;N_2吸附比表面积有所减小,从原土的69.99 m^2/g减小为10.16 m^2/g。
Adsorption of organic compounds on montmorillonite can be improved effectively by organic modified method.But it is difficult to reach automatic production by the common heating method because of the large energy consumption and long reaction time.To develop a modified method with high efficiency and energy-saving,cetyltrimethylammonium Bromide(CTAB)was inserted into montnorillonite using the common heating method and microwave irradiation to achieve the organic montmorillonites.The adsorption efficiency of...
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2008年第S2期94-101,共8页
Journal of Jilin University:Engineering and Technology Edition
基金
黑龙江省科技攻关重点项目(GB06C20401)．
关键词
复合材料
有机蒙脱石
微波辐射
苯酚
XRD
红外光谱
N_2吸附脱附
composites
organic montmorillonite
microwave irradiation
phenol
XRD
infrared spectroscopy
N_2 adsorption-desorption
