文献类型：期刊文献

中文题名：以固体硅胶为硅源的β沸石晶化过程的研究

英文题名：STUDIES ON THE PROCESS OF CRYSTALLIZATION FOR SYNTHESIS OFβ-ZEOLITE USING SOLID SILICA AS SILICON SOURCE

作者：谢在库[1];张成芳[1];陈庆龄[2];陈波[2];孔德金[2]

机构：[1]华东理工大学化工工艺研究所,上海200237;[2]上海石油化工研究院,上海201208

年份：2000

卷号：16

期号：3

起止页码：33

中文期刊名：石油学报（石油加工）

外文期刊名：Acta Petrolei Sinica(Petroleum Processing Section)

收录：CSTPCD;;EI(收录号：2001025401026);Scopus;北大核心:【北大核心1996】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：沸石;晶化;晶粒粒度;结构;硅铝状态

外文关键词：zeolite;process of crystallization;crystal size;state of silicon and aluminium

摘要：研究了以固体硅胶为硅源的 β沸石在 80 h以内晶化过程的变化规律。结果表明 ,晶化时间从 0增加到 80h,合成的 β沸石晶胞略有收缩 ,IR谱中 ,1 2 0 9cm- 1振动峰向高频方向位移 8cm- 1,1 0 75 cm- 1振动峰向低频方向位移 5 cm- 1。晶化时间在 3 0 h内 ,β沸石存在 A与 B两种不同的结晶位。晶化时间大于 5 0 h后 ,β沸石出现典型的双环与开孔 IR特征峰。当晶化时间从 0增加到 80 h,2 9Si NMR谱表征的骨架硅铝比逐渐增大 ,2 7Al NMR谱表征的非骨架铝逐渐增多。
A process of crystallization for synthesis of β zeolite using solid silica as silicon source was studied When crystallization time increases from 5 h to 80 h,the cell unit of as synthesized β zeolite gradually contracted,the IR vibration peak at 1209 cm -1 shifts 8 cm -1 to higher wave numbers,vibration peak at 1075 cm -1 shifts 5 cm -1 to lower wave numbers The IR characteristic peaks of double rings at 568 cm -1 and 520 cm -1 and pore opening at 464 cm -1 and 427 cm -1 for β zeolite appear when crystallization period longer than 50 h The framework molar ratio n (SiO 2)/ n (Al 2O 3) determined by 29 Si NMR and the extra framework aluminium determined by 27 Al NMR gradually increase with crystallization period increase,and β zeolite has two kinds of different crystallization sites A and B while the crystallization period is less than 30 h