| 固相法制备纳米Co3O4催化剂及其催化甲苯完全氧化性能 |
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| 引用本文： | 熊德胜,秦枫,徐华龙,沈伟.固相法制备纳米Co3O4催化剂及其催化甲苯完全氧化性能[J].化学学报,2012,70(1):39-44. |
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| 作者姓名： | 熊德胜 秦枫 徐华龙 沈伟 |
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| 作者单位： | 上海市分子催化和功能材料重点实验室复旦大学先进材料实验室复旦大学化学系,上海,200433 |
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| 基金项目： | 863重点计划项目，上海市科学技术委员会基金 |
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| 摘 要： | 采用环境友好的固相法制备了高活性甲苯氧化Co3O4催化剂,通过与传统沉淀法和柠檬酸络合-燃烧法制备的Co3O4催化剂比较,固相合成法制备的Co3O4-SR催化剂在催化甲苯完全氧化反应中表现了很好的活性和稳定性,甲苯转化率为95%时的反应温度T95为230℃,反应60 h活性没有下降.通过XRD,Raman,FT-IR,XPS等手段对Co3O4催化剂的结构和表面性能进行了表征,结果表明固相法制备的Co3O4催化剂具有较多的表面缺陷,催化剂表面Co—O键较弱,具有较强的活化氧的能力,表现出突出的甲苯完全氧化的催化活性.
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| 关 键 词： | 甲苯 完全氧化 Co3O4催化剂 固相法 |
Preparation of Co_3O_4 Catalysts by a Solid-state Reaction for Total Oxidation of Toluene |
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| Institution: | Xiong,Desheng Qin,Feng Xu,Hualong Shen,Wei(Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Laboratory of Advanced Materials,Department of Chemistry,Fudan University,Shanghai 200433) |
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| Abstract: | Highly active Co3O4 catalysts(Co3O4-SR) are synthesized by a simple and environmentally friendly solid-state reaction.Compared with Co3O4 made by precipitation and citrate methods,Co3O4-SR catalysts possess lager surface area,smaller particle size,weaker surface Co—O bond and more surface de-fects.Co3O4-SR catalysts exhibit high activity and stability for total oxidation of toluene,with a toluene conversion of 95% at 230 ℃ without any observable trend of deactivation in 60 h. |
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| Keywords: | toluene total oxidation cobalt oxide solid-state reaction |
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