纳米ZSM-5/MCM-41二级孔材料的微波合成与性能  

Microwave synthesis and characterization of ZSM-5/MCM-41 secondary porous materials

作　　者：庞晶曼 罗小林 张锋[1] 钱华明 陈亚芍 Pang Jingman Luo Xiaolin Zhang Feng Qian Huaming Chen Yashao(Department of Chemistry and Chemical Engineering, Key Laboratory of Advanced Molecular Engineering Materials, Baoji University of Arts and Sciences, Baoji Shaanxi 721013, China School of Chemistry and Chemical Engineering , Key Laboratory ofApplied Surface and Colloid Chemistry , Ministry of Education , Shaanxi Normal University, Xi＇an Shaanxi 710062, China)

机构地区：[1]宝鸡文理学院化学化工学院先进分子工程材料重点实验室,陕西宝鸡721013 [2]陕西师范大学化学化工学院应用表面与胶体化学教育部重点实验室,陕西西安710062

出　　处：《石油化工》2017年第10期1243-1248,共6页Petrochemical Technology

基　　金：宝鸡文理学院院级项目(ZK2017025)

摘　　要：以纳米ZSM-5分子筛为原料,在碱液中,采用微波法快速消解获得硅铝源,以十六烷基三甲基溴化铵形成的胶束为模板,制备具有空心结构的ZSM-5/MCM-41二级孔材料,优化了反应温度、消解时间、晶化时间、体系p H等条件对材料合成的影响。并采用XRD、SEM、TEM、N_2物理吸附等手段对合成产物进行了表征。实验结果表明,ZSM-5/MCM-41二级孔材料的最优合成条件为:反应温度为120℃,消解时间为30 min,晶化时间为30 min,体系pH=10.0。表征结果显示,所得ZSM-5/MCM-41二级孔材料具有微孔和介孔两种孔道结构,孔体积为0.816 m L/g、比表面积可达872 m^2/g。The seriflux of silica and aluminum was rapidly obtained from the alkali-treated nano ZSM-5 molecular sieves etched by microwave digestion. Then, ZSM-5/MCM-41 secondary porous materials with a hollow structure were fabricated under a certain condition by using cetyltrimethyl ammonium bromide（CATB） micelles as templates. The synthesis conditions, such as etching time, pH, and synthesis time, were systematically investigated. The products were characterized by XRD, SEM, TEM, and N2 physical adsorption. The optimal synthesized conditions for ZSM-5/MCM- 41 secondary porous materials were fixed as following： by adjusting the pH of the system to 10.0, reaction temperature to 120 ℃, the secondary porous materials, including ZSM-5 and MCM-41, can be synthesized under microwave irradiation for 30 rain by using CATB as the template. The obtained ZSM-5/MCM-41secondary porous materials contained microporous and mesoporous structures with the pore volume of 0.816 mL/g and special surface area of 872 m2/g.

关 键 词：多孔材料 微波合成 空心结构 

分 类 号：TQ426.6[化学工程]