摘要
利用酸改性膨润土对低浓度[BMIM]Cl离子液体水溶液的吸附性能进行研究,考察了吸附温度、吸附时间、溶液pH值等吸附条件对离子液体的吸附率的影响。结果表明,酸改性膨润土对[BMIM]Cl的阳离子具有良好的吸附作用。在中性溶液中,酸改性膨润土对离子液体具有最大的吸附率。酸改性膨润土对离子液体的吸附过程是放热过程且属于Langmuir等温吸附,同时,得到膨润土上离子液体吸附的Langmuir等温方程且相关系数大于0.99。
Acid-modified bentonite was used for the adsorption of low concentration [BMIM] Cl ionic liquid solution. The effect of adsorption temperature, adsorption time and pH value of ionic liquid solution on the adsorption properties was investigated. Experimental results showed that acid-modified bentonite had good adsorption properties for the cation of [BMIM] Cl ionic liquid. In the neutral solution, acidmodified bentonite had the maximum adsorption capacity for [BMIM] Cl. The adsorption process of [BMIM] Cl by acid-modified bentonite was exothermic and belonged to the Langmuir isothermal adsorption. At the same time, the Langmuir isothermal adsorption equation was obtained and the correlation coefficient was larger than 0.99.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2007年第6期1489-1493,共5页
CIESC Journal
基金
国家自然科学基金项目(20206010)
广东省科技攻关项目(2006B13801002)
广州市科技攻关项目(2006Z3-E0671)。~~
