| 天然丝光沸石多步脱铝-钛化制备钛硅分子筛 |
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| 引用本文： | 肖丽萍,杨靖,周慧,陈春雨,孙世烨,楼辉,郑小明.天然丝光沸石多步脱铝-钛化制备钛硅分子筛[J].催化学报,2012(1):2210-2215. |
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| 作者姓名： | 肖丽萍 杨靖 周慧 陈春雨 孙世烨 楼辉 郑小明 |
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| 作者单位： | 浙江大学化学系浙江省应用化学重点实验室 |
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| 基金项目： | 国家基础科学人才培养基金 (J0830413);浙江省科技厅优先主题项目 (2009C11141);浙江省自然科学基金 (J20091487);浙江省教育厅项目 (N20080080)~~ |
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| 摘 要： | 以优选的天然丝光沸石为原料, 采用多步脱铝-钛化法合成钛硅分子筛, 利用 X 射线粉末衍射、紫外-可见光谱、电感耦合等离子体原子发射光谱、N2 吸附-脱附法以及氨程序升温脱附等手段对其进行了表征, 并考察了它在苯乙烯氧化反应中的催化性能. 结果表明, 该方法可成功地将 Ti 同晶取代到天然丝光沸石的骨架中, 其 Si/Ti 达到 79, 且能稳定地保持天然丝光沸石的结构. 该钛硅分子筛在以 H2O2 水溶液为氧化剂的苯乙烯氧化反应中表现有良好的催化活性, 是商业 TS-1 催化剂的 75%, 具有一定的应用前景.
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| 关 键 词： | 天然丝光沸石 脱铝 钛化 钛硅分子筛 苯乙烯 部分氧化 |
Multi-step Dealumination and Incorporation of Titanium into the Framework of Natural Mordenite toward a Titanosilicate Catalyst |
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| XIAO Liping,YANG Jing,ZHOU Hui,CHEN Chunyu,SUN Shiye,LOU Hui,ZHENG Xiaoming.Multi-step Dealumination and Incorporation of Titanium into the Framework of Natural Mordenite toward a Titanosilicate Catalyst[J].Chinese Journal of Catalysis,2012(1):2210-2215. |
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| Authors: | XIAO Liping YANG Jing ZHOU Hui CHEN Chunyu SUN Shiye LOU Hui ZHENG Xiaoming |
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| Institution: | * Key Laboratory of Applied Chemistry of Zhejiang Province,Department of Chemistry,Zhejiang University,Hangzhou 310027,Zhejiang,China |
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| Abstract: | Titanosilicates with low cost have been prepared via multi-step incorporation of titanium into natural mordenite(MOR) using natural MOR as the precursor.The resultant Ti-MOR was characterized by X-ray diffraction,inductive coupled plasma-atomic emission spectroscopy,diffused reflectance ultraviolet-visible spectroscopy,N2 adsorption-desorption,and temperature-programmed desorption of ammonia.The results showed that the framework of natural MOR remained during the treatment and the molar ratio of Si to Ti was low to 79.Furthermore,the well-dispersed 4-coordinated Ti was confirmed by UV-Vis spectra and the titanosilicate displayed appreciable activity in the selective oxidation of styrene using dilute H2O2(30%) as oxidant. |
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| Keywords: | natural mordenite multi-step dealumination titanation titanosilicate styrene partial oxidation |
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