燃料化学学报2015，Vol.43Issue(12)：1482-1488,7.
萘在介孔分子筛MCM-41与SBA-15上的吸附特性研究
Study on the adsorption behaviours of naphthalene on MCM-41 and SBA-15 mesoporous molecular sieves
摘要
Abstract
In this paper, the adsorption behaviours of naphthalene on two popular mesoporous molecular sieves, SBA-15 and MCM-41 were studied. The adsorption isotherms were obtained, and fitted with isotherm models of Langmuir, Freundlich and D-R. The breakthrough curves of naphthalene at different initial concentrations were measured, and well predicted by the constant-pattern wave model. Results show that the Langmuir model can well describe the adsorption isotherms of naphthalene at low concentration with R2 higher than 99%. The adsorption ability of SBA-15 with a microporous structure is stronger than that of MCM-41 which contains only mesoporous structures. The predictions on breakthrough curves by the constant-pattern model exhibited higher correlation coefficient for SBA-15 than for MCM-41. The overall mass transfer coefficient Ka of naphthalene on SBA-15 is higher than that on MCM-41 , indicating that there is a lower mass transfer resistance and the mass transfer equilibrium can be achieved faster over SBA-15 .关键词
介孔分子筛SBA-15/介孔分子筛MCM-41/萘/吸附等温线/穿透曲线Key words
MCM-41/SBA-15/naphthalene/adsorption isotherm/breakthrough curve分类
资源环境引用本文复制引用
杨权,刘应书,李子宜,杨雄,王占营,姜理俊..萘在介孔分子筛MCM-41与SBA-15上的吸附特性研究[J].燃料化学学报,2015,43(12):1482-1488,7.基金项目
The project was supported by the National Natural Science Foundation of China (51478038).国家自然科学基金(51478038)资助项目 （51478038）
