| 范宗良,王小瑞,李贵贤.Dawson型杂多酸钕盐催化氧化甲苯制备苯甲醛[J].分子催化,2012,(1):32-38 |
| Dawson型杂多酸钕盐催化氧化甲苯制备苯甲醛 |
| Catalytic Oxidation of Toluene to Benzaldehyde over Dawson-type Heteropoly Acid Neodymium Salt |
| 投稿时间：2011-12-01 修订日期：2012-01-03 |
| DOI： |
| 中文关键词: Dawson型 杂多酸 钕盐 甲苯 苯甲醛 |
| 英文关键词:Dawson type Heteropoly Acid Neodymium salt toluene benzaldehyde |
| 基金项目: |
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| 摘要点击次数: 2035 |
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| 中文摘要: |
| 合成了Dawson型磷钼钒杂多酸稀土(钕)盐，并用红外光谱分析(IR)、X射线衍射(XRD)方法对催化剂进行了表征；以H2O2为氧化剂，进行了甲苯氧化制备苯甲醛的反应研究。由于钕和钒的协同作用，从而催化剂表现出高的活性。实验结果表明，甲苯的转化率90.1%，苯甲醛的选择性达51.0%,双氧水的转化率89.0%，选择性43.1%。基于对杂多酸盐结构的研究，对反应机理进行了初步的探讨。 |
| 英文摘要: |
| A novel Nd salt of Dawson type heteropoly acid (Nd3P2Mo15V3O62•nH2O) was prepared by doping rare-earth Nd in H9P2Mo15V3O62•nH2O, and characterized by infrared spectroscopy (FTIR), X-ray diffraction (XRD). Its catalytic activity was evaluated in the oxidation of toluene to benzaldehyde with H2O2 as an oxidant，catalyst exhibits high activity owing to strong synergistic effect of Neodymium and vanadium. The conversion of toluene and selectivity of benzaldehyde were up to 90.1 %, 51.0 %, respectively. The conversion of H2O2 and selectivity of H2O2 were 89.0 % and 43.1 %, respectively. Based on the study of polyoxometalates’ structure, a possible reaction mechanism is proposed. |
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