NaY分子筛的类固相合成及其晶化机理初探  

THE SYNTHESIS OF NaY ZEOLITE IN THE SOLID-LIKE SYSTEM AND ITS CRYSTALLIZATION MECHANISM

作　　者：康善娇[1,2] 窦涛[2] 雷小松[2] 

机构地区：[1]大唐国际化工技术研究院有限公司,北京100070 [2]中国石油大学CNPC催化重点实验室,北京102249

出　　处：《石油学报（石油加工）》2009年第A02期58-60,69,共4页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划"973"项目(2004CB217806);国家自然科学基金项目(20476060)资助

摘　　要：采用具有液相和固相双向转化机理为主导的类固相体系合成方法,合成了NaY分子筛。采用X射线衍射(XRD)、扫描电镜(SEM)和低温氮气吸附-脱附技术对合成样品进行了表征。结果表明,合成的NaY分子筛结晶好、无杂晶、晶粒规整。与普通水热合成体系相比,类固相体系合成方法具有投入产出比高、硅/铝比高、单釜产率可提高200%的优点。结合合成过程中的影响因素,初步探索了类固相体系合成NaY分子筛的晶化机理。Based on bidirectional transformation mechanism of liquid and solid phases, NaY zeolite was synthesized in a solid-like system. The texture properties of the NaY samples were characterized by XRD, SEM and N2 adsorption-desorption techniques. The results showed that such NaY has high relative crystallinity, an excellent multi-modal porous structure, large BET surface area and pore volume. Compared to conventional hydrothermal system, this synthesis process gives the advantages of short-cycle, higher yield of products for each run in the vessel. The zeolite yield can increase by more than 200 %. The preliminary study has been carried out for understanding the crystallization mechanism.

关 键 词：类固相合成 NaY沸石分子筛 结晶机理 双相转化 

分 类 号：O643[理学—物理化学]