利用高岭土合成SAPO-5型分子筛  

Synthesis of SAPO-5-Type Molecular Sieve from Kaolin

作　　者：司玉成 Si Yucheng(College of Chemical Engineering,Shaanxi Institute of Technology,Xi’an,Shaanxi 710300)

机构地区：[1]陕西国防工业职业技术学院化学工程学院,陕西西安710300

出　　处：《非金属矿》2020年第3期61-63,共3页Non-Metallic Mines

基　　金：陕西国防工业职业技术学院科研项目(Gfy19-04)。

摘　　要：以高岭土为硅源和铝源,磷酸为磷源,三乙胺为模板剂,采用水热法合成SAPO-5分子筛。研究了铝磷比、晶化温度和晶化时间等因素对分子筛产品合成的影响。利用X射线衍射分析(XRD)、红外光谱分析(FTIR)和扫描电镜(SEM)对产物结构与组成进行了表征分析,确定了适宜的合成条件:n(Al)∶n(P)为1∶2,晶化温度为180℃,晶化时间为24 h。合成的产品为柱状晶体,形貌规则,结晶度高。SAPO-5 molecular sieves was synthesized by hydrothermal method using kaolin as silica source and aluminum sources,phosphoric acid as phosphorous source and triethylamine as template agent.The influence ofn(Al)/n(P),crystallization temperature and crystallization time on the synthesis of the product were investigated.The structure and composition of the product were characterized by X-ray diffraction(XRD),infrared spectroscopy(FTIR)and scanning electron microscopy(SEM).The suitable synthesis conditions were determined as follows:the n(Al)∶n(P)was 1∶2,the crystallization temperature was 180℃,the crystallization time was 24 hours.The product was columnar crystal with regular morphology and high crystallinity.

关 键 词：SAPO-5 水热 高岭土 三乙胺 

分 类 号：TQ13[化学工程—无机化工]