| Selective Oxidation of Toluene with Hydrogen Peroxide Catalyzed by V-Mo-based Catalyst |
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| 引用本文： | WU Jun-ping WANG Xue-qin ZHU Liang-fang LI Gui-ying HU Chang-wei. Selective Oxidation of Toluene with Hydrogen Peroxide Catalyzed by V-Mo-based Catalyst[J]. 高等学校化学研究, 2007, 23(5): 585-591. DOI: 10.1016/S1005-9040(07)60128-7 |
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| 作者姓名： | WU Jun-ping WANG Xue-qin ZHU Liang-fang LI Gui-ying HU Chang-wei |
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| 作者单位： | WU Jun-ping，WANG Xue-qin，ZHU Liang-fang，LI Gui-ying and HU Chang-wei Key Laboratory of Green Chemistry and Technology，Ministry of Education，College of Chemistry，Sichuan University，Chengdu 610064，P.R.China |
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| 基金项目： | Supported by the National Natural Science Foundation of China(Nos.20502017and20072024)，the Teaching and ResearchAward Program for Outstanding Young Teachers in Higher Education Institutions of Ministry of Education,China，the ScienceFoundation for Young Teachers of Sichuan University. |
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| 摘 要： | The selective catalytic oxidation of toluene with hydrogen peroxide over V-Mo-based catalysts under mild conditions was studied.The promotion effect of Mo on the catalysts was studied with V/Al2O3 and Mo/Al2O3 as reference samples.The catalysts were characterized by XRD,TPR,and XPS techniques.The results show that the addition of Mo to V/Al2O3 may change the distribution of V species on Al2O3 surface.Over V-Mo/Al2O3 catalyst,highly dispersed amorphous V species facilitates benzaldehyde formation,and crystalline V2O5 species increases the conversion of toluene but decreases the selectivity to benzaldehyde,while AlVMoO7 species favors both the conversion of toluene and the formation of cresols.The yield of benzaldehyde depends remarkably on the surface O/Al and Mo/V atomic ratios,and gets to a maximum value of 13.2% with a selectivity of 79.5% at an O/Al atomic ratio of 3.0 and Mo/V atomic ratio of 0.7.
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| 关 键 词： | VMoO/γ-Al2O3 catalysts |
| 收稿时间： | 2006-12-01 |
| 修稿时间： | 2006-12-01 |
Selective Oxidation of Toluene with Hydrogen Peroxide Catalyzed by V-Mo-based Catalyst |
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| Jun-ping WU, Xue-qin WANG, Liang-fang ZHU, Gui-ying LI,Chang-wei HU,. Selective Oxidation of Toluene with Hydrogen Peroxide Catalyzed by V-Mo-based Catalyst[J]. Chemical Research in Chinese University, 2007, 23(5): 585-591. DOI: 10.1016/S1005-9040(07)60128-7 |
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| Authors: | Jun-ping WU Xue-qin WANG Liang-fang ZHU Gui-ying LI Chang-wei HU |
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| Affiliation: | aKey Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China |
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| Abstract: | The selective catalytic oxidation of toluene with hydrogen peroxide over V-Mo-based catalysts under mild conditions was studied. The promotion effect of Mo on the catalysts was studied with V/Al2O3 and Mo/Al2O3 as reference samples. The catalysts were characterized by XRD, TPR, and XPS techniques. The results show that the addition of Mo to V/Al2O3 may change the distribution of V species on Al2O3 surface. Over V-Mo/Al2O3 catalyst, highly dispersed amorphous V species facilitates benzaldehyde formation, and crystalline V2O5 species increases the conversion of toluene but decreases the selectivity to benzaldehyde, while AlVMoO7 species favors both the conversion of toluene and the formation of cresols. The yield of benzaldehyde depends remarkably on the surface O/Al and Mo/V atomic ratios, and gets to a maximum value of 13.2% with a selectivity of 79.5% at an O/Al atomic ratio of 3.0 and Mo/V atomic ratio of 0.7. |
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| Keywords: | Toluene selective oxidation Benzaldehyde Hydrogen peroxide |
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