| 引入SiO2对SO4^2—／ZrO2超强酸体系的影响 |
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| 引用本文： | 张锋,华伟明,等.引入SiO2对SO4^2—／ZrO2超强酸体系的影响[J].高等学校化学学报,1999,20(6):909-913. |
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| 作者姓名： | 张锋 华伟明 |
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| 作者单位： | 复旦大学化学系 |
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| 基金项目： | 国家基础研究重大项目资助 |
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| 摘 要： | 用共沉淀法和负载法制备了一系列SO4^2-/ZrO2催化剂，详细研究了添加SiO2对SO4^2-/ZrO2超强酸样品的晶化、比表面、硫含量、超强酸性和异丙苯裂解及异丙醇脱水反应的影响。引入SiO2会延迟ZrO2的晶化和晶相转变，减弱SO4^2-/ZrO2体系的超强酸性，但对提高样品的异丙苯裂解和异丙醇脱水反应活性有利。
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| 关 键 词： | 固体超强酸性 固体超强酸催化剂 二氧化硅 氧化锆 异丙醇 硫酸 制备 脱水 异丙苯 裂解 |
Influence of Adding SiO2 into ZrO2 onSO2-4/ZrO2 Solid Superacid |
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| ZHANG Feng,HUA WeiMing,GAO Zi.Influence of Adding SiO2 into ZrO2 onSO2-4/ZrO2 Solid Superacid[J].Chemical Research In Chinese Universities,1999,20(6):909-913. |
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| Authors: | ZHANG Feng HUA WeiMing GAO Zi |
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| Institution: | ZHANG Feng,HUA WeiMing,GAO Zi* |
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| Abstract: | A series of SO2-4/ZrO2SiO2 catalysts with different SiO2 amount were prepared by coprecipitation and coating methods. The effect of adding SiO2 into ZrO2 on the crystallization, surface area, sulfur content, superacidity of SO2-4/ZrO2 and cumene cracking and isopropanol dehydration was studied in detail. Adding SiO2 into ZrO2 retarded the crystallization and phase transformation of ZrO2, and decreased solid superacidity of SO2-4/ZrO2, but enhanced the catalytic activities of SO2-4/ZrO2 for cumene cracking and isopropanol dehydration. |
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| Keywords: | Solid superacidity SO2-4/ZrO2 SO2-4/ZrO2SiO2 |
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