Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Beijing University of Chemical Technology(Natural Science Edition)》 2007-05
Add to Favorite Get Latest Update

Isomerization and aromatization of 1-hexene over nanosized HMCM-49 zeolites

FANG Dong1 HUANG ChongPin1,2 LI BingJie1,2 CHEN BiaoHua1,2 (1.College of Chemical Engineering;2.State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China)  
Nanosized MCM-49 zeolite has been synthesized from an Na2O-Al2O3-SiO2-H2O mixture with hexamethyleneimine(HMI) as template using low temperature aging and high temperature crystallization steps.The HMCM-49 zeolite was characterized by different physicochemical techniques(XRD,SEM,TPD,and BET).Isomerization and aromatization of 1-hexene over different HMCM-49 zeolite samples was investigated in a fixed-bed micro-reactor.It was found that the total number of acid sites decreased and the surface area increased with decreasing crystal size of the zeolite.As a result of its large accessible external surface area and acidity,nanosized HMCM-49 shows higher activity for 1-hexene isomerization and aromatization and higher total yield of aromatics and isomerization products than micron-sized samples of the same zeolite.
【Fund】: 国家“973”计划(2004CB217804)
【CateGory Index】: O643.32
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved