正己烷/异辛烷在沸石咪唑酯骨架材料(ZIFs)上的动态吸附性能研究DYNAMIC ADSORPTION PERFORMANCE OF ALKANE ISOMERS ON ZIF-8,ZIF-67,ZIF-8-SiO2 AND ZIF-67-SiO2
范伟,陈乐,张致慧,何明阳
摘要(Abstract)：
利用常温法合成了锌沸石咪唑酯骨架分子筛(ZIF-8)、钴沸石咪唑酯骨架分子筛(ZIF-67),再利用原位合成法,将ZIF-8、ZIF-67负载到自制的SiO2上得到ZIF-8-SiO2、ZIF-67-SiO2,并对4种样品进行XRD、SEM、TEM等表征。通过固定床动态吸附穿透实验测定了正己烷/异辛烷混合液在4种吸附材料样品上的连续流出穿透曲线。结果表明,正己烷在样品ZIF-8上的动态吸附量和饱和吸附量均高于样品ZIF-67、ZIF-8-SiO2和ZIF-67-SiO2。
关键词(KeyWords)： 正己烷;异辛烷;ZIF-8;ZIF-67;ZIF-8-SiO2;ZIF-67-SiO2;动态吸附
基金项目(Foundation): 江苏省自然科学基金青年基金(No.BK20130251);; 江苏省研究生培养创新工程(No.CXZZ13-0729)
作者(Author): 范伟,陈乐,张致慧,何明阳
DOI: 10.16026/j.cnki.iea.2013.06.002
参考文献(References)：
- [1]姚志龙,赵毓璋.正构烷烃吸附分离技术进展.化工进展[J].2003,22(6):589-592.
- [2]李佩均,金晓龙,杨久平,等.重液蜡综合开发应用.当代化工[J].2009,38(4):364-367.
- [3]Breck D W.Zeolite Molecular Sieves[M].New York:John Wiley&Sons Inc,1974,p36-68.
- [4]Lee J Y,Farha O K,Roberts J,et al.Metal-organic framework materials as catalysts.Chemical Society Reviews[J].2009,38:1450-1459.
- [5]刘漫,鲁晓明,冯俊鹤,等.美国沸石咪唑酯骨架结构材料的研究进展.现代化工[J].2008,28(6):81-84.
- [6]Zhou W,Wu H,Udovic T J,et al.Quasi-free methyl rotation in zeolitic imidazolate framework-8.The Journal of Physical Chemistry A[J].2008,112(49):12602-12606.
- [7]Luebbers M T,Wu T J,Shen L J,et al.Effects of molecular sieving and electrostatic enhancement in the adsorption of organic compounds on the zeolitic imidazolate framework ZIF-8.Langmuir[J].2010,26(19):15625-15633.
- [8]David P,Gérald C,Angélique S M,et al.Separation of C6paraffins using zeolitic imidazolate frameworks:Comparison with Zeolite 5A.Industrial&Engineer Chemistry Research[J].2012,51(12):4692-4702.
- [9]Qian J F,Sun F A,Qin L Z.Hydrothermal synthesis of zeolitic imidazolate framework-67(ZIF-67)nanocrystals.Materials Letters[J].2012,82(1):220-223.
- [10]Li Y S,Liang F Y,Bux H,et al.Molecular sieve membrane:Supported metal-organic framework with high hydrogen selectivity.Angewandte Chemie International Edition[J].2010,122(3):558-561.
- [11]Chmelik C,Freude D,Bux H,et al.Ethene/ethane mixture diffusion in the MOF sieve ZIF-8 studied by MAS PFG NMR diffusometry.Microporous and Mesoporous Materials[J].2012,147(1):135-141.
- [12]Wu T,Bu X H,Zhang J,et al.New zeolitic imidazolate frameworks:From unprecedented assembly of cubic clusters to ordered cooperative organization of complementary ligands.Chemistry of Materials[J].2008,20(24):7377-7382.
- [13]Wu T,Zhang J,Bu X H,et al.Variable lithium coordination modes in two-and three-dimensional lithium boron imidazolate frameworks.Chemistry of Materials[J].2009,21(16):3830-3837.