快速合成功能化纳米分子筛Ⅱ.X型分子筛  

Fast Synthesis of Functionalized Nano-size Zeolite by Ultrasonic Method Ⅱ.Zeolite X

作　　者：李朝圣[1] 余林[1] 李永峰[1] 孙明[1] 张雷[1] 余坚[1] 余倩[1] 

机构地区：[1]广东工业大学轻工化工学院,广州510006

出　　处：《材料导报（纳米与新材料专辑）》2008年第2期30-34,共5页

基　　金：广州市科技计划项目(2006J1-C0501);广东省自然科学基金团队项目(04205301);广东省高等学校自然科学研究重点项目(06Z011);广东省科技计划项目(2005B10201053)

摘　　要：在低温下用超声波法快速合成了X型分子筛,用XRD、TEM、BET、IR、TG-DSC等对合成产物进行了表征。结果表明,在n(Na_2O):n(SiO_2):n(Al_2O_3):n(H_2O)=5.85:3.30:1.00:105.0,60℃下短时间超声波晶化60min就能合成纳米X型分子筛,其BET、外比表面与微孔面积分别为472.4m^2/g、185.5m^2/g与287.9m^2/g,颗粒均匀,平均粒径约为10nm。研究了超声波晶化时间和陈化时间对合成纳米X分子筛的影响。相对于常规水热法,超声波法降低了晶化温度,缩短了晶化时间,而且样品具有相当的热稳定性。Zeolite X is synthesized quickly by using the ultrasonic method at low temperature. The as-synthesized products are characterized by XRD, TEM, BET, IR and TG-DSC, respectively. Results show that the zeolite X is synthesized quickly by the ultrasonic crystal with a mole ratio of n （Na2O） ： n （ SiO2 ） ： n （Al2O2 ） ： n （H2O） = 5.85 ： 3. 30 ： 1.00 ： 105. 0 under 60℃ and the ultrasonic time of 60min, whose BET, external surface area and microporous area are 472. 4m^2/g, 185. 5m^2/g and 287.9m^2/g, respectively. Its particles are uniform and the average particle size is about 10nm. The effects of ultrasonic crystal time and ageing time on the zeolite X are studied as well. Compared with that prepared by the conventional hydrothermal method, the zeolite X synthesized by the ultrasonic method show the same thermal stability with lower crystallization temperature and shorter crystallization time.

关 键 词：超声波法 水热法 X型分子筛 

分 类 号：O643[理学—物理化学]