Isomorphous Substitution of Zn in Nanoscale ZSM-5 Zeolite and the Catalytic Performance for 1-hexene Aromatization
(0) The nano-ZSM-5 zeolite was syn thesized by a seed-induced method free organic template.The Zn-modified nano-ZSM-5 zeolite catalysts, xZn/HNZ5 and yZn/Al-HNZ5, were prepared by the conventional impregnation method and isomorphous substitution, respectively.The physicochemical properties of the catalysts were characterized by XRD, N2 adsorption, SEM, NH3TPD and Py-IR, while the catalytic properties were evaluated at 480 ℃ and a weight hourly space velocity (WHSV) of 2.0 h-1 in the aromatization procedure of 1-hexene.Compare with xZn/HNZ5,yZn/Al-HNZ5 exhibited smaller particles and high ly dispersion of Zn specice, which lead to greater in tergranular mesopore and homogeneous acidity dis tribution.Experimental results proved that the syn ergy effect between the Br(o)nsted and Lewis acid sites, the stability in the 1-hexene aromatization and the yidd of aromatics were all significantly en hanced on the condition of isomorphous substitution.
nano-ZSM-5 zeolite Zn-modification isomorphous substitution aromatization
Gaoliang Wang Wei Wu Wang Zan Xuefeng Bai Wenjing Wang Xin Qi O.V.Kikhtyanin
International Joint Research Centre for Catalytic Technology,Key Laboratory of Chemical Engineering Boreskov Institute of Catalysis,Siberian Branch of the Russian Academy of Sciences,Novosibirsk 63009
国际会议
The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)
昆明
英文
74-78
2013-11-19（万方平台首次上网日期，不代表论文的发表时间）