摘要
研究了羟基铝柱撑膨润土对[BMIM]Cl离子液体水溶液的吸附性能,考察了吸附温度、吸附时间、膨润土用量、离子液体的浓度、pH值等对离子液体吸附率的影响.结果表明:羟基铝柱撑膨润土对[BMIM]Cl溶液具有良好的吸附作用;温度对吸附的影响甚微;达到吸附平衡的时间为2 h;吸附率随着吸附剂用量的增加而增大,且离子液体的浓度越大,吸附率越大;在中性溶液中,离子液体吸附率可达到最大值;离子液体在羟基铝柱撑膨润土上的吸附同时符合Lang-muir和Freundlich吸附等温方程.
The adsorption capacity of hydroxy-alumina pillared bentonite for [BMIM]Cl ionic liquid solution was measured. The effects of various parameters, including adsorption temperature, contact time, absorbent dosage, ionic liquid concentration and pH, on the absorption ration were investigated. The results show that the hydroxy-alumina pillared bentonite has good adsorption properties for [BMIM]Cl ionic liquid. The effect of temperature on the adsorption is small. The adsorption equilibrium can achieve within 2 h. The adsorption capacity increases along with the increasing of absorbent dosage and ionic liquid concentration. In the neutral solution, pillared bentonite has the maximum adsorption capacity. The adsorption isotherm data for the pillared bentonite can be well represented by both the Langmuir and Freundlich models.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2009年第4期586-589,共4页
Journal of China University of Mining & Technology
基金
国家自然科学基金项目(20807056)
中国矿业大学青年科研基金项目(OH060102)
关键词
膨润土
羟基铝柱撑
离子液体
吸附
bentonite
hydroxy-alumina pillared
ionic liquid
adsorption
