少量乙醇对L沸石合成的影响  

Influence of a Small Amount of Ethanol on the Synthesis of Zeolite L

作　　者：詹予忠[1] 库伟转[1] 王法 陈宜俍[1] 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001 [2]惠生工程(中国)有限公司,河南郑州450052

出　　处：《郑州大学学报（工学版）》2011年第4期86-89,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：中国石油天然气总公司资助项目(09-YK-05-36)

摘　　要：以白炭黑和偏铝酸钾为原料,添加少量乙醇合成L沸石.产物用XRD和SEM进行表征.系统研究了晶化时间、晶化温度、合成原料配比等参数对产物纯度和结晶度的影响.发现在合成体系中添加少量乙醇有利于合成纯度高、粒径较大、结晶度较高的L沸石.优化的晶化温度是130～150℃,更高的温度容易生成杂晶.延长晶化时间、提高硅铝比有利于提高产品的结晶度,但提高合成的碱度则使产品结晶度降低.Using silica aerogel and potassium aluminate as raw materials,zeolite L was synthesized by adding a small amount of ethanol.The products were characterized by XRD and SEM.The effects of synthesis parameters such as time,temperatur,and raw material ratio on purity and crystallinity of zeolite L were also investigated systematically.It was found that adding a small amount of ethanol to synthesis mixture could synthese zeolite L with higher purity,larger size,and higher crystallinity.The optimal temperature was 130-150 ℃,and higher temperature might result in mixed crystal.Increasing time and Si/Al ratio could improve the crystallinity,but higher synthesis alkalinity reduced the crystallinity of zeolite L product.

关 键 词：L沸石 水热合成 结晶度 晶貌 

分 类 号：TQ426.94[化学工程]