偏高岭土微波加热合成NaX分子筛及其机理探讨  

Microwave-assisted Synthesis of NaX Zeolite from Metakaolinite and Its Crystallization Mechanism

作　　者：罗河济[1] 周志辉[1] 吕振华[1] 刘红[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,武汉430081

出　　处：《硅酸盐通报》2011年第5期1014-1018,1028,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金资助项目(No.20606004);武汉科技大学绿色制造与节能减排科技研究中心开放基金(No.B0917)

摘　　要：本文以偏高岭土为主要原料,采用微波加热法合成了静态饱和吸水量超过32.0%的NaX分子筛。进行了单因素实验,考察了晶化时间、胶化时间、n(Na2O/Al2O3)对合成分子筛的影响。通过静态水吸附测定、XRD、IR和SEM等测试手段考察反应条件对合成NaX分子筛的影响,并对NaX分子筛晶体生长规律进行了探讨研究。实验得出了优化条件为:晶化时间为105 min,胶化时间为30 min,n(Na2O/Al2O3)为4.7。In this paper,metakaolinite was used as raw material to synthesize NaX zeolite adsorption dryer by microwave-assisted heating,the static water absorption ratio of the zeolite was above 32.0%.The crystal time,glue time and n（Na2O/Al2O3） which effected the crystal were determined by the single factor method.The growth rule of NaX zeolite was discussed according to static water absorption,XRD,IR and SEM.The NaX zeolite was obtained under the optimum conditions：the crystal time was 105 min,glue time was 30 min,n（Na2O/Al2O3） was 4.7.

关 键 词：偏高岭土 微波加热 NaX分子筛 晶化机理 

分 类 号：TQ425[化学工程]