西安理工大学学报2017，Vol.33Issue(2)：152-158,7.DOI:10.19322/j.cnki.issn.1006-4710.2017.02.005
Al/CTMAB复合改性膨润土的制备及对苯酚和Cu2+的吸附性能
Preparation and adsorption performance of Al/CTMAB composite modified bentonite for phenol and copper ions
摘要
Abstract
Sodium bentonite was pre-modified by hydroxyl-Al pillared,and then was modified using 12-alkyl trimethyl ammonium bromide and 16-alkyl trimethyl ammonium bromide,respectively.The compound modified sodium bentonite was prepared.The response surface methodology (RSM) was employed to investigate the effects of various factors on absorption rate of phenol,with the quadratic polynomial regression prediction model was established.While the variance analysis and response surface analysis of the model were made,XRD,FTIR and BET were used to characterize and analyze the structure and properties of the samples.The results showed that two modifiers got into the sodium bentonite interlamination and that the interlayer spacing and specific surface area increased.The R2 of quadratic model was 0.9984 with had better fitness.The optimal preparation conditions were obtained as follows:16-alkyl trimethyl ammonium bromide dosage was 0.08％,reaction temperature was 65 ℃ and reaction time was 4 h.Under the optimal conditions,the absorption rate of prepared compound modified sodium bentonite for phenol and Cu2+ can reach 69.6％ and 77.9％,respectively.The predicted value of absorption rate satisfied properly with experimentation data,with the relative error found to be 0.41 ％.关键词
钠基膨润土/复合改性/响应曲面优化/吸附性能Key words
sodium bentonite/composite modification/response surface methodology/adsorption performance分类
化学化工引用本文复制引用
余晓皎,唐喜颜,李举,张健,赵园园,周文娜,王力波..Al/CTMAB复合改性膨润土的制备及对苯酚和Cu2+的吸附性能[J].西安理工大学学报,2017,33(2):152-158,7.基金项目
国家自然科学基金资助项目(21276208,21576220) （21276208,21576220）
陕西省自然科学基金重点资助项目(2015JZ005) （2015JZ005）
西安市科技计划资助项目(CX1435③) （CX1435③）
陕西省教育厅自然科学专项资助项目(14JK1517) （14JK1517）
2016国家级大学生创新创业训练计划资助项目(201610700043) （201610700043）
