ATS结构分子筛SCM-23的合成  

Synthesis of Zeolite SCM-23 with ATS-type Structure

作　　者：徐丹丹 王振东[2] 刘闯[2] 罗翼 杨为民[1,2] XU Dandan;WANG Zhendong;LIU Chuang;LUO Yi;YANG Weimin(School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;State Key Laboratory of Green Chemical Engineering and Industrial Catalysis,Shanghai Research Institute of PetrochemicalTechnology,SINOPEC,Shanghai 201208,China)

机构地区：[1]华东理工大学化工学院,上海200237 [2]中国石油化工股份有限公司上海石油化工研究院,绿色化工与工业催化国家重点实验室,上海201208

出　　处：《化学反应工程与工艺》2019年第1期18-24,共7页Chemical Reaction Engineering and Technology

基　　金：国家重点研发计划项目（2017YFB0702800）;自然科学基金委员会青年科学基金项目（21503280）

摘　　要：以4-吡咯烷基吡啶为有机结构导向剂(OSDA),首次合成了骨架含Al的ATS结构分子筛,并命名为SCM-23(Sinopec Composite Material-23)。考察了有机结构导向剂用量、SiO2/Al2O3(物质的量之比)、H2O/Si O2(物质的量之比)、Ge含量及晶化温度对SCM-23分子筛晶化的影响。并采用X-射线衍射(XRD)、氨程序升温脱附(NH3-TPD)、扫描电子显微镜(SEM)和固体核磁共振(NMR)等手段对晶化产物进行了表征。得出适合SCM-23分子筛晶化的凝胶组成为1 SiO2:(1/40~1/20) GeO2:(1/60~1/30) Al2O3:0.6 OSDA:0.6 HF:(15~20) H2O。Al以四配位形式进入骨架,所得分子筛具有较强的酸性、良好的热稳定性及水热稳定性。The aluminium-incorporated ATS-type zeolite, SCM-23, was synthesized by using 4-pyrrolidinopyridine as organic structure-directing agent(OSDA) for the first time. The effects of the amount of OSDA, molar ratios of SiO2/Al2 O3 and H2 O/Si O2, Ge content and crystallization temperature on the crystallization of SCM-23 zeolite were investigated respectively. X-ray diffraction(XRD), NH3 temperature programmed desorption(NH3-TPD), scanning electron microscope(SEM), nuclear magnetic resonance(NMR) were carried out to characterize the obtained zeolites. The suitable composition of the starting gel for the synthesis of SCM-23 is 1 SiO2 :(1/40-1/20) GeO2 :(1/60-1/30) Al2 O3 : 0.6 SDA : 0.6 HF :(15-20) H2 O. Aluminum was successfully incorporated into the framework in the tetracoordinated state and endowed SCM-23 with acidic property and good thermal and hydrothermal stability.

关 键 词：SCM-23 ATS 4-吡咯烷基吡啶 分子筛 骨架结构 

分 类 号：TQ424.25[化学工程]