纳米与非纳米ZSM-5分子筛的表征及催化性能  

Characteristics and Catalytic Performance of Nanocrystalline and Non-Nanocrystalline ZSM-5 Zeolites

作　　者：张玲玲[1] 李凤艳[2] 赵天波[3] 王岳[2] 

机构地区：[1]北京化工大学,北京100029 [2]北京石油化工学院,北京102617 [3]北京理工大学,北京100081

出　　处：《石油化工高等学校学报》2007年第1期31-34,共4页Journal of Petrochemical Universities

基　　金：中国石油化工股份有限公司资助项目(101063)

摘　　要：对纳米与非纳米ZSM-5分子筛进行了表征和催化性能的研究。分子筛采用XRD,SEM进行表征,采用NH3-TPD对ZSM-5分子筛进行酸性测定,N2吸附测定比表面积和孔容积。选用甲苯烷基化,二甲苯异构化反应,使用脉冲微反-色谱联用装置对其进行催化活性的评价。纳米ZSM-5分子筛的甲苯烷基化和二甲苯异构化转化率分别为60.98%(450℃)和90.38%(500℃),其值高于非纳米ZSM-5分子筛(转化率分别为46.18%和75.59%),纳米ZSM-5分子筛表现出较好的催化活性。The characteristics and catalytic performance of nanocrystalline and non-nanocrystalline ZSM-5 Zeolites were studied. The zeolites were characterized by XRD and SEM, the acidity was measured by NH3-TPD, surface area and pore volume were determined by N2 adsorption. Toluene alkylation and o- xylene isomerization were chosen and the catalytic activity was estimated with impulse minisize reactor- chromatogram device. The results show that toluene alkylation and o- xylene isomerization convertion of nanocrystalline ZSM-5 zeolite are 60.98% （450 ℃ ） and 90.38% （500 ℃ ） respectively, which are higher than that of non-nanocrystalline ZSM-5 zeolite（46.18% and 75.59 %）, so nanocrystalline ZSM-5 zeolite has better catalytic activity.

关 键 词：ZSM-5 分子筛 纳米 非纳米 催化活性 

分 类 号：O643.3[理学—物理化学]