One-Pot Synthesis and Characterization of Cu-SBA-16 Mesoporous Molecular Sieves as an Excellent Catalyst for Phenol Hydroxylation
One-Pot Synthesis and Characterization of Cu-SBA-16 Mesoporous Molecular Sieves as an Excellent Catalyst for Phenol Hydroxylation
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DOI：
10.1007/s10562-010-0490-1
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发表时间：
2011-02
影响因子：
2.8
通讯作者：
Yongli Dong;Xiaoyu Niu;Yujun Zhu;Fulong Yuan;H. Fu
中科院分区：
文献类型：
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作者：
Yongli Dong;Xiaoyu Niu;Yujun Zhu;Fulong Yuan;H. Fu
采用一锅法合成了CuSBA-16分子筛，并用X射线衍射仪、透射电子显微镜和氮气吸附等手段对其进行了表征。用FT-IR、UV-DRS、H2-TPR和XPS对CuSBA-16中铜物种的性质进行了深入的研究。铜物种主要以孤立的单核Cu2+离子和高度分散的CuO纳米团簇的形式存在于介孔SBA-16分子筛上。由于大量高度分散的铜物种的存在，该催化剂对苯酚羟基化反应具有良好的催化活性。苯酚的转化率和二苯酚的选择性分别为29.4%和91.5%。图形摘要用简单的EISA方法直接合成了含有孤立的单核Cu2+离子和高度分散的CuO簇合物的介孔CuSBA-16，该催化剂对苯酚羟化反应具有良好的催化性能。
AbstactCu-SBA-16 has been prepared by one-pot synthesis method, and Characterized by XRD, TEM, and N2adsorption measurements. An extended study about the nature of copper species in the Cu-SBA-16 has been performed by FT-IR, UV-DRS, H2-TPR and XPS. The copper species is mainly present on the mesoporous SBA-16 in the form of isolated mononuclear Cu2+ions and highly dispersive CuO nanoclusters. The excellent catalytic activity has been obtained for phenol hydroxylation due to the presence of high amount of highly dispersive Cu species. The conversion to phenol and selectivity to diphenol are 29.4 and 91.5%, respectively.Graphical AbstractA simple EISA strategy for direct synthesis of mesoporous Cu-SBA-16 containing isolated mononuclear Cu2+ions and highly dispersive CuO clusters which shows an excellent catalytic performance for phenol hydroxylation.