极浓体系下MCM-22分子筛的静态合成  

STATIC SYNTHESIS OF ZEOLITE MCM-22 IN EXTREMELY DENSE SYSTEM

作　　者：张伟[1] 李玉平[2] 霍全[1] 王小莉[1] 窦涛[1,3] 

机构地区：[1]太原理工大学精细化工研究所,山西太原030024 [2]太原理工大学材料科学与工程学院,山西太原030024 [3]中国石油大学催化重点实验室,北京102249

出　　处：《石油学报（石油加工）》2006年第B10期103-106,共4页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：在极低的n（H2O）／n（SiO2）条件下成功地合成了纯相、高结晶度的MCM-22分子筛。具体的合成条件为：n（HMI）／n（SiO2）为0．08～0．6，n（H2O）／n（SiO2）为5～10，n（SiO2）／n（Al2O3）为30～80。该合成体系为典型的极浓体系。与n（H2O）／n（SiO2）=35条件下合成的MCM-22分子筛相比，低n（H2O）／n（SiO2）极浓体系条件下合成的MCM-22分子筛具有更高的结晶度，且其比表面积和孔容均有所增加。极浓体系下合成的MCM-22分子筛大大降低了HMI和NaOH的用量，这不仅有利于降低MCM-22的合成成本，而且可减少对环境的污染。Zeolite MCM-22 with pure phase and good crystallinity was prepared successfully under low n（H2O）/ n（SiO2 ）. The typical crystallization conditions were n（HMI）/n（SiO2） of 0.08-0. 6, n（H2O）/n（SiO2 ）of 5-10, n（SiO2）/n（Al2O3 ） of 30-80, with which the synthesis system was called the extremely dense system. Zeolite MCM-22 obtained from this system had higher crystallinity than those prepared under high n（H2O）/n （SiO2） （n（H2 O）/n（SiO2 ） = 35）. Correspondingly, its BET surface area and micropore volume increased. In this method the consumption of HMI and NaOH could be effectively decreased, which was beneficial to the reduction of synthesis cost and the protection of environment.

关 键 词：MCM-22 分子筛 MWW 静态合成 极浓体系 

分 类 号：O643.36[理学—物理化学]