Effect of microstructure of MFI-type zeolite membranes on separation of xylene isomers
Effective separation of xylene isomers is possible with pervaporation through MFI-silicalite membranes. The effect of microstructural differences in silicalite membranes on the separation of xylene isomers was investigated. MFI-type zeolite membranes with random and ordered orientations were synthesized using a seeded growth method with and without organic templates. It was found that template-free random oriented membranes were capable of pure component p/o xylene separation factors of about 20 and p-xylene flux of 0.3 kg m-2 hr-1. The membranes with preferred orientation showed comparable flux of xylene isomers but decreased selectivities ranging from 2 to 3. These results indicate that microstructure strongly affects the ability of the membrane to perform xylene separation.
J. L. OBrien-Abraham M. Kanezashi Y. S. Lin
Department of Chemical Engineering, Arizona State University, P.O. Box 103, Tempe,Arizona, USA
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）