详细信息
多级孔道5A分子筛的合成及其对正构烷烃的吸附性能研究
Synthesis and adsorption performance of hierarchical 5A Zeolite for normal paraffin adsorption
文献类型:期刊文献
中文题名:多级孔道5A分子筛的合成及其对正构烷烃的吸附性能研究
英文题名:Synthesis and adsorption performance of hierarchical 5A Zeolite for normal paraffin adsorption
作者:陈翔[1];赵世敏[1];刘纪昌[1];沈本贤[1];孙辉[1]
机构:[1]化学工程联合国家重点实验室(华东理工大学),上海200237
年份:2016
卷号:36
期号:6
起止页码:87
中文期刊名:现代化工
外文期刊名:Modern Chemical Industry
收录:CSTPCD;;Scopus;北大核心:【北大核心2014】;CSCD:【CSCD2015_2016】;
基金:国家自然科学基金资助项目(21306051);中央高校基本科研业务费专项资金资助项目(222201414009)
语种:中文
中文关键词:5A分子筛;多级孔道;模板剂;正构烷烃;吸附
外文关键词:5A zeolite; hierarchical pore; template; n-paraffin; adsorption;
摘要:为了提高5A分子筛对正构烷烃吸附分离的速率,以二甲基十八烷基[3-(三甲氧基硅基)丙基]氯化铵(TPOAC)为软模板剂,采用水热合成方法合成出具有微孔和介孔结构的多级孔道5A分子筛。结果表明,合成的分子筛以0.5 nm左右的微孔为主,介孔孔道集中在7~13 nm。通过改变模板剂用量可以调控合成分子筛的介孔数量。合成的多级孔道5A分子筛在保持对正构烷烃具有较高平衡吸附量的同时,显著提高正构烷烃在分子筛内的扩散系数,从而提高吸附分离的速率。
In order to improve the adsorption separation efficiency of 5A zeolite for n-paraffins,the micro / mesopore structure hierarchical 5A zeolite is synthesized by hydrothermal method with the dimethyl octadecyl [3-( trimethoxysilyl)propyl] ammonium chloride( TPOAC) as soft template. Micropores with the diameter of 0. 5 nm are connected with 7-13 nm mesopores. The amount of mesopores could be controlled by the template dosage. The hierarchical zeolite synthesized can improve the diffusion coefficient of n-paraffins in zeolite and keep high adsorption capacity of the hierarchical zeolite for n-paraffins.
参考文献:
正在载入数据...
