水玻璃在高岭土微球上原位晶化L沸石

化工进展

水玻璃在高岭土微球上原位晶化L沸石

仇峰1，卫冬燕1，张忠东2，汪毅2，刘涛2，陈宜俍1，郭士岭1

1郑州大学化工与能源学院，河南郑州450001；2中国石油天然气有限公司兰州石化研究院，甘肃兰州 730060

出版日期:2010-10-05 发布日期:2010-10-05

Synthesis of zeolite L via in situ crystallization with water glass on kaolin microsphere

QIU Feng1，WEI Dongyan1，ZHANG Zhongdong2，WANG Yi2，LIU Tao2， CHEN Yiliang1，GUO Shiling1

1School of Chemical Engineering and Energy，Zhengzhou University，Zhengzhou 450001，Henan，China；2Lanzhou Petrochemical Academy，China National Petroleum Co.，Ltd.，Lanzhou 730060，Gansu，China

Online:2010-10-05 Published:2010-10-05

摘要/Abstract

摘要：

以廉价工业原料水玻璃在高岭土微球，偏土微球上水热合成出L沸石。合成初始组成为：1Al₂O₃∶4.7（KOH+NaOH）∶14SiO₂∶250H₂O（摩尔比K₂O/Na₂O=2.5）。采用X射线衍射（XRD）、扫描电镜（SEM）对合成的L沸石分子筛进行了表征。XRD检测结果表明：制备的L沸石分子筛具有典型的L沸石特征峰。SEM电镜表明：合成出的L沸石的晶形呈球状，在加入氟离子添加剂后晶型变为多菱柱状，晶型完美。

Abstract:

Zeolite L was prepared via hydrothermal synthesis from cheap industrial raw materials，water glass with kaolin and partial kaolin microspheres. The initial composition for the synthesis is 1 Al₂O₃：4.7（KOH+NaOH）：14SiO₂：250H₂O，（K₂O/Na₂O=2.5 molar ratio）. The synthesized zeolite L was characterized using X-ray diffraction（XRD），scanning electron microscopy（SEM）. The prepared zeolite L showed typical XRD characteristic peaks of zeolite L. SEM showed that the synthesized zeolite L exhibited spherical crystals，which converted into multi-rhombus columnar perfect crystals upon addition of fluoride additives.

仇峰1，卫冬燕1，张忠东2，汪毅2，刘涛2，陈宜俍1，郭士岭1. 水玻璃在高岭土微球上原位晶化L沸石 [J]. 化工进展.

QIU Feng1，WEI Dongyan1，ZHANG Zhongdong2，WANG Yi2，LIU Tao2， CHEN Yiliang1，GUO Shiling1. Synthesis of zeolite L via in situ crystallization with water glass on kaolin microsphere[J]. Chemical Industry and Engineering Progree.