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发明名称
含稀土五元环结构高硅沸石的制备方法
摘要
一种无胺存在下合成含稀土的高硅沸石的方法:以水玻璃、磷酸铝和无机酸为原料以及REY或REHY沸石为晶种组成的胶体体系在130~200℃下晶化12~60小时,过滤,洗涤,干燥。该沸石具有ZSM-5沸石族X光衍射谱图,其孔道较ZSM-5沸石狭窄,可适用于ZSM-5沸石应用的领域,如用作裂化催化剂的助剂可以在提高汽油辛烷值的同时仍保持较高的汽油收率,并且该沸石具有良好的活性稳定性。
申请公布号
CN1058382A
申请公布日期
1992.02.05
申请号
CN90104732.5
申请日期
1990.07.23
申请人
中国石油化工总公司石油化工科学研究院
发明人
付维;舒兴田;祝惠华;何鸣元
分类号
C01B33/34
主分类号
C01B33/34
代理机构
代理人
主权项
1、一种合成具有ZSM-5沸石族X光衍射谱图的五元环结构高硅沸石的方法,其特征在于以含(以氧化物计)稀土2~23重%和钠低于5.0重%的REY或REHY沸石为晶种,晶种均匀分散在由水玻璃、铝盐或铝酸盐以及无机酸组成的体系中,晶种中所含氧化铝与其余组分所含氧化铝的重量比为0.05~3.0,其余各组分用量与无胺合在ZSM-5沸石的常规方法中各相应组分用量相同,上述反应体系在130~200℃下静止晶化12~60小时,过滤,洗涤,干燥,即可。
地址
100083北京市海淀区学院路18号
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