| V2O5-MoO3-SiO2表面复合氧化物催化剂的制备与表征 |
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| 引用本文： | 陶跃武,凌云,钟顺和.V2O5-MoO3-SiO2表面复合氧化物催化剂的制备与表征[J].催化学报,1999,20(2):129-133. |
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| 作者姓名： | 陶跃武 凌云 钟顺和 |
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| 作者单位： | 天津大学化工系,天津,300072 |
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| 基金项目： | 国家自然科学基金;29773031; |
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| 摘 要： | 采用表面改性法制备了V2O5-SiO2,MoO3-SiO2,V2O5-MoO3-SiO2复合氧化物催化剂,并用TPR和IR技术研究了催化剂的表面结构及V=O,M0=O的活性,同时用化学吸附IR技术研究了催化剂样品对异丁烷的化学吸附性能.实验结果表明:这些复合氧化物催化剂对异丁烷都有较高的化学吸附能力;SiO2能缓解表面Lewis碱位V=O和Mo=O的氧化能力,有利于选择氧化.
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| 关 键 词： | 五氧化二钒 三氧化钼 二氧化硅 复合氧化物催化剂 表面改性 选择氧化 |
| 修稿时间： | 1998年6月8日 |
PREPARATION AND CHARACTERIZATION OF V2O5-MoO3-SiO2 SURFACE COMPOUND CATALYSTS |
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| Tao Yuewu,Ling Yun,Zhong Shunhe.PREPARATION AND CHARACTERIZATION OF V2O5-MoO3-SiO2 SURFACE COMPOUND CATALYSTS[J].Chinese Journal of Catalysis,1999,20(2):129-133. |
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| Authors: | Tao Yuewu Ling Yun Zhong Shunhe |
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| Abstract: | The complex oxide compounds of V 2O 5 SiO 2, MoO 3 SiO 2 and V 2O 5 MoO 3 SiO 2 have been prepared by the method of surface modification. The surface construction of all the catalysts and the reactivity of VO and Mo O have been investigated by using TPR and IR. The chemisorption properties of i butane on these catalysts have been investigated by using IR. The experimental results showed that: i butane can be easily adsorbed on VO and Mo O of the surface of V 2O 5 SiO 2, MoO 3 SiO 2 and V 2O 5 MoO 3 SiO 2. SiO 2 can decrease the oxidizability of the Lewis alkalinity of VO and Mo O so that it is suitable for the selective oxidation. |
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| Keywords: | vanadium pentoxide molybdenum trioxide silica complex oxide catalyst surface modification selective oxidation |
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