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多级孔道纳米L型分子筛的合成与表征
作者:  张家友 张慧智 陈祥树 
单位:(江西师范大学先进材料研究院 分子筛膜材料国家地方联合工程实验室 江西师范大学化学化工学院 南昌 330022) 
关键词:分子筛 晶体生长 纳米晶体 多级孔道 吸附 
分类号:O643.3; O647.3
出版年,卷(期):页码:2020,48(2):0-0
DOI:
摘要:

 在非有机模板剂体系中、采用浓稠的初始合成溶胶高效合成Si/Al比为1.9的L型分子筛。借助X射线衍射、扫描电子显微镜、透射电子显微镜、氮气吸脱附测试和X射线能谱仪等手段表征晶体的晶化行为和微结构,并考察了合成条件如合成时间、老化时间和溶胶配比对晶体生长的影响。结果表明:合成的纳米L型分子筛具有多级孔道结构。高结晶度且纯相的L型分子筛可在较宽的n(SiO2)/n(Al2O3)值(20~100)范围内得到。此外,优化条件下合成的纳米L型分子筛在25 ℃时对CO2、CH4和N2进行等温吸附测试,结果表明此分子筛具有较高的CO2吸附量。

基金项目:
国家国际科技合作专项(2015DFA50190)项目;国家自然科学基金项目(21868013,21476099和21766010)资助。
作者简介:
参考文献:

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