| 纳米固体超强酸SO_4~(2-)/TiO_2的制备及其催化活性 |
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| 引用本文： | 周华,屈小英,余高奇,李宁致. 纳米固体超强酸SO_4~(2-)/TiO_2的制备及其催化活性[J]. 中南民族大学学报(自然科学版), 2005, 0(3) |
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| 作者姓名： | 周华 屈小英 余高奇 李宁致 |
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| 作者单位： | 武汉科技大学化工与资源环境学院 武汉430081(周华，屈小英，余高奇)，华中科技大学生命科学与技术学院 武汉430074(李宁致) |
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| 基金项目： | 湖北省教育厅重点科研资助项目(2002A01018) |
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| 摘 要： | 以廉价的无机盐TiCl4为原料,采用溶胶-凝胶法结合超临界流体干燥技术制备出纳米TiO2粉末,经硫酸溶液浸泡、活化后制成纳米固体超强酸SO24-/TiO2.着重探讨了纳米固体超强酸的制备条件,并将其用于乙酸正丁酯的合成反应以考察其催化活性.结果表明:该法制备的纳米固体超强酸SO24-/TiO2具有很强的催化活性,且制备成本低,反应时间短,酯化率高.
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| 关 键 词： | 纳米固体超强酸 制备 催化合成 乙酸正丁酯 |
Preparation of Nano Solid Superacid SO_4~(2-)/TiO_2 and Its Catalytic Activity |
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| Zhou Hua Qu Xiaoying Yu Gaoqi Li Ningzhi Assoc Prof,College of Chemical Engineering,Resources and Environment,Wuhan University of Science and Technology,Wuhan ,China. Preparation of Nano Solid Superacid SO_4~(2-)/TiO_2 and Its Catalytic Activity[J]. Journal of South-Central Univ for, 2005, 0(3) |
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| Authors: | Zhou Hua Qu Xiaoying Yu Gaoqi Li Ningzhi Assoc Prof College of Chemical Engineering Resources Environment Wuhan University of Science Technology Wuhan China |
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| Affiliation: | Zhou Hua Qu Xiaoying Yu Gaoqi Li Ningzhi Assoc Prof,College of Chemical Engineering,Resources and Environment,Wuhan University of Science and Technology,Wuhan 430081,China |
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| Abstract: | Nano TiO_2 powder is prepared by sol-gel and supercritical fluid drying method from cheap inorganic salt TiCl_4. Nano solid superacid SO~(2-)_4/TiO_2 is prepared by immersing nano TiO_2powder in sulphuric acid and activating. The preparation condition of nano solid superacid is intensely investigated. Its catalytic activity has been examined by catalytic activity in preparation of n-butyl acetate. It shows that the nano solid superaicd SO~(2-)_4/TiO_2 has very strong catalytic activity , and the preparation cost is low, the reaction time is short, the yield of ester is rather high. |
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| Keywords: | nano solid superaicd preparation catalytic synthesis n-butyl acetate |
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