燃料化学学报2017，Vol.45Issue(5)：581-588,8.
Effect of the Si/Al ratio of HZSM-5zeolite on the production of dimethyl ether before and after ultrasonication
Effect of the Si/Al ratio of HZSM-5 zeolite on the production of dimethyl ether before and after ultrasonication
Sameh M.K.Aboul-Fotouh 1Laila I.Ali 1Mona A.Naghmash 1Noha A.K.Aboul-Gheit1
作者信息
摘要
Abstract
A series of as-synthesized HZSM-5 zeolites with different Si/Al ratios (25,90,120,240 and 400) were post-treated by ultrasonication for an optimum time of 60min.The morphology,acidity and textural properties of HZSM-5 were characterized with XRD,SEM,N2 adsorption and NH3-TPD techniques.The catalytic performance was evaluated by dehydration of methanol to dimethyl ether (DME),which is a promising gaseous automotive fuel in future.It was found that the Si/Al ratio of HZSM-5 had considerable impacts on its catalytic performance for dehydration of methanol to DME.Its activity increased with decreasing Si/Al ratio from 400 to 25.Ultrasonication of HZSM-5 could significantly improve its catalytic performance.关键词
Ultrasonication-HZSM-5-dimethyl ether-Si/Al ratioKey words
Ultrasonication-HZSM-5-dimethyl ether-Si/Al ratio分类
化学化工引用本文复制引用
Sameh M.K.Aboul-Fotouh,Laila I.Ali,Mona A.Naghmash,Noha A.K.Aboul-Gheit..Effect of the Si/Al ratio of HZSM-5zeolite on the production of dimethyl ether before and after ultrasonication[J].燃料化学学报,2017,45(5):581-588,8.
