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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 effects of adsorption temperature, adsorption time, amount of bentonite, concentration of ionic liquid and pH value on the adsorption rate of ionic liquid [BMIM] Cl ionic liquid were investigated. The results showed that the hydroxyl group The adsorption of [BMIM] Cl solution by aluminum pillared bentonite has good adsorption effect; the temperature has little effect on the adsorption; the adsorption equilibrium time is 2 h; the adsorption rate increases with the increase of the adsorbent dosage, In the neutral solution, the adsorption rate of ionic liquid can reach the maximum value. The adsorption of ionic liquid on the aluminum hydroxide pillared bentonite conforms to the Lang-muir and Freundlich adsorption isothermal equations at the same time.