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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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高铈含量的MCM-48介孔分子筛的合成与表征
Abstract:
以十六烷基三甲基溴化铵(hexadecyltrimethylammoniumbromide,CTAB)和曲拉通(Triton,TX-100)混合表面活性剂作为模板剂,在水热晶化过程中引入铈源,合成了铈含量高达12%(摩尔分数)的Ce-MCM-48,借助X射线衍射、N2吸附-脱附等温分析、透射电镜、紫外可见漫反射吸收光谱分析了产物结构和性能。结果表明所合成的材料在较高掺杂量时仍保持立方有序介孔结构和较高的比表面积(1185～331m2/g),掺杂的铈以Ce4+形式进入孔道骨架或孔道内壁。
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