【作者】 方奕文； 乔晓辉； 黄晓昌； 宋一兵； 孙长勇； 吴武玲；

【Author】 FANG Yi-wen QIAO Xiao-hui HUANG Xiao-chang SONG Yi-bing SUN Chang-yong WU Wu-ling Department of Chemistry,Shantou University,Shantou 515063,China

【机构】 汕头大学化学系；

【摘要】 以硅酸为硅源,铝酸钠为铝源,六亚甲基亚胺（HMI）为结构导向剂,采用静态水热晶化法合成MCM-22分子筛,并利用XRD,SEM,FTIR等技术对合成产物进行表征。结果表明,凝胶硅铝比是影响产物晶相的重要因素。n（SiO₂）/n（Al₂O₃）小于15时,没有MCM-22生成;n（SiO₂）/n（Al₂O₃）为30,45,60时,合成的MCM-22分子筛的样品的纯度和结晶度较高;n（SiO₂）/n（Al₂O₃）为22,100,150及∞时,有MCM- 49,MOR或Kenyaite等杂晶生成。更多还原

【Abstract】 MCM-22 Zeolite has been synthesized,using silicic acid,sodium aluminate and hexamethyleneimide （HMI）as raw ma- terials,by static hydrothermal synthesis method,and the product was characterized by XRD,SEM and FTIR.The results indi- cated that SiO₂/Al₂O₃ ratio in the gel was an important factor affecting the product composition.When n（SiO₂）/n（Al₂O₃） was less than 15,there wasn’t MCM-22 zeolite in the product;When n（SiO₂）/n（Al₂O₃） was 30,45 and 60,the product was pure MCM-22 zeolite with high crystallinity.And when n（SiO₂）/n（Al₂O₃） was 22,100,150 or∞,other type zeolites,such as MCM-49,MOR,kenyaite or magadiitein,were formed in the product.更多还原