酸度对掺杂Ce-SBA-15介孔分子筛合成的影响

功能材料, 2011, 42(4): 612-615.

酸度对掺杂Ce-SBA-15介孔分子筛合成的影响

蔡国辉 ^1, , 肖益鸿 ^2, , 郑勇 ^3, , 邱健斌 ^4, , 郑瑛 ^5, , 魏可镁 ^6,

1.福州大学,化肥催化剂国家工程研究中心,福建,福州,350002

2.福州大学,化肥催化剂国家工程研究中心,福建,福州,350002

3.福州大学,化肥催化剂国家工程研究中心,福建,福州,350002

4.福建师范大学,化学与材料学院,福建,福州,350007

5.福建师范大学,化学与材料学院,福建,福州,350007

6.福州大学,化肥催化剂国家工程研究中心,福建,福州,350002

基金项目: 福建省教育厅资助项目(JA10073) 国家科技部支撑计划资助项目(2007BAE08B01)

关键词：掺杂 , Ce-SBA-15 , 介孔分子筛 , 酸度

Effect of acidity on the synthesis of cerium-incorporated SBA-15 mesoporous molecular sieve

采用溶胶-凝胶法,以三嵌段共聚物(P123)作为模板剂,正硅酸乙酯(TEOS)为硅源,通过微波辅助加热快速合成出骨架掺杂的Ce-SBA-15介孔分子筛.采用X射线粉末衍射(XRD)、傅立叶变换红外(FT-IR)、N2等温吸附-脱附法、紫外-可见漫反射(DRS)等手段对合成的样品进行表征.结果表明,当凝胶的pH=2～7时,所合成的Ce-SBA-15分子筛中,Ce具有两种配位状态.当凝胶体系pH值=2时,所合成的Ce-SBA-15具有更高的比表面积.

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酸度对掺杂Ce-SBA-15介孔分子筛合成的影响

Effect of acidity on the synthesis of cerium-incorporated SBA-15 mesoporous molecular sieve

参考文献