1,8-辛二胺作为结构导向剂合成ZSM-11分子筛
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摘要：
ZSM-11是重要的固体酸催化剂,在石油化工领域应用广泛,因此,ZSM-11的高效合成备受关注.采用1,8-辛二胺(DAOT)作为结构导向剂,用水热法在较宽范围内成功地合成了不含ZSM-5杂晶的ZSM-11分子筛.研究了水平转速、晶化温度、晶化时间以及硅铝比对ZSM-11分子筛制备的影响.在不同的合成条件下,得到了不同的晶体尺寸、形貌以及不同结晶度的ZSM-11分子筛.样品晶粒通过X射线衍射(XRD)和扫描电子显微镜(FESEM)进行表征.研究拓展了ZSM-11的高效合成方法,得到了ZSM-11分子筛的最佳合成条件为水平转速50r/min,160℃晶化48h.
ZSM-11 is an important solid acid catalyst and is widely used in petrochemical industry.Therefore,the high efficient synthesis of ZSM-11 is highly concerned.In this paper,ZSM-11 zeolites without ZSM-5 hybrid was successfully synthesized in a wide range by using 1,8-diaminooctane as Structure-directing agent(SDA).The effect of speed of horizontal rotation,crystallization temperature,crystallization time and Si/Al ratio on the preparation of the ZSM-11 zeolites were studied.ZSM-11 zeolites with different crystal sizes,morphologies and crystallinities were produced under different synthesis conditions.The crystallinity and morphology of the resulted ZSM-11 zeolites were characterized by X-ray diffraction(XRD)and field emission scanning electron microscopy(FESEM).This study extends efficient synthesis method of the ZSM-11 and gets the best synthetic conditions of ZSM-11 zeolites:horizontal speed of 50 r/min,160℃crystallization 48 h.
作者：
徐霆 杜立方 岑诗雨 赵茜怡
Xu Ting;Du Lifang;Cen Shiyu;Zhao Qianyi(School of Chemistry and Chemical Engineering,Henan Normal University,Xinxiang 453007,China;Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials,Henan Normal University,Xinxiang 453007,China)
机构地区：
betway官方app 化学化工学院 河南省硼化学与先进能源材料重点实验室
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2019年第3期67-73,共7页
基金：
国家自然科学基金(5201039120117)
关键词：
ZSM-11分子筛 1,8-辛二胺 动态晶化 结晶度 合成条件
ZSM-11 zeolite 1,8-diaminooctane rotating crystallization crystallization synthesis conditions
分类号：
TQ424.25 [化学工程] TQ426 [化学工程]
