ZSM-5分子筛水热合成条件的实验研究  

Experimental Study on Hydrothermal Synthesis Conditions of ZSM-5 Zeolite

作　　者：朱玉琴[1] 管雅倩 ZHU Yuqin;GUAN Yaqian(College of Chemistry and Chemical Engineering,Xi'an Shiyou University,Xi'an,Shaanxi 710065,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065

出　　处：《西安石油大学学报（自然科学版）》2020年第4期102-107,113,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：陕西省自然科学基础研究计划项目(2020JQ-764)。

摘　　要：ZSM-5分子筛是一种孔道结构独特的硅铝酸盐晶体材料,在改善催化裂化汽油质量和提高乙烯、丙烯等低碳烯烃收率方面有重要应用。利用水热合成方法制备出亚微米级ZSM-5分子筛,并研究了水热合成条件对亚微米级ZSM-5分子筛结构特征和物化性能的影响。结果表明:在模板剂用量为25%、晶化温度为185℃、晶化时间为48 h、合成体系碱度为0.10~0.12、原料硅铝比为100的条件下,可以获得结晶度较高、晶体形貌规整、孔结构性质良好的亚微米级ZSM-5分子筛。ZSM-5 zeolite is a kind of aluminosilicate crystal material with unique pore structure.It has important applications in improving the quality of catalytically cracked gasoline and increasing the yield of low-carbon olefins such as ethylene and propylene.Submicron ZSM-5 zeolite was prepared using hydrothermal synthesis method.The effect of hydrothermal synthesis conditions on the structural characteristics and physical and chemical properties of the submicron ZSM-5 zeolite was studied.The results show that:the submicron ZSM-5 zeolite with high crystallinity,regular crystal morphology and good pore structure can be obtained under the conditions of template agent mass fraction of 25%,crystallization temperature of 185℃,crystallization time of 48 h,synthetic system alkalinity of 0.10~0.12 and silicon-aluminum ratio of 100.

关 键 词：亚微米级ZSM-5分子筛 水热合成 结晶度 孔结构 

分 类 号：TQ424.25[化学工程]