| 不同反荷离子的Keggin结构钼磷酸盐的热稳定性及其对异丁醛催化氧化活性的影响 |
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| 引用本文： | 吴通好,贾继飞,朱莉,王国甲,杨洪茂,姜玉子. 不同反荷离子的Keggin结构钼磷酸盐的热稳定性及其对异丁醛催化氧化活性的影响[J]. 高等学校化学学报, 1994, 15(4): 584 |
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| 作者姓名： | 吴通好 贾继飞 朱莉 王国甲 杨洪茂 姜玉子 |
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| 作者单位： | 吉林大学化学系, 长春, 130023 |
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| 基金项目： | 中国石油化学工业总公司资助课题 |
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| 摘 要： | 用共沉淀法制备了以Keggin结构为骨架的不同反荷离子钼磷酸盐,利用FTIR、XRD等手段进行了表征。结果表明,Li、Na、K、Cs分别作为反荷离子时的杂多酸盐的热稳定性依次增强,并考察了催化剂对异丁醛一步氧化制甲基丙烯酸的催化活性,其中Cs盐的催化活性最优。
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| 关 键 词： | Keggin结构钼磷酸盐 反荷离子 稳定性 催化氧化 异丁醛 |
| 收稿时间： | 1993-06-08 |
Thermal Stability and Activity of Catalytic Oxidation of Isobutyraldehyde of Molybdophosphoric Salt with Keggin Structure Containing Different Equilibrium Cations |
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| WU Tong-Hao,JIA Ji-Fei, ZHU Li,WANG Guo-Jia,YANG Hong-Mao,JIANG Yu-Zi. Thermal Stability and Activity of Catalytic Oxidation of Isobutyraldehyde of Molybdophosphoric Salt with Keggin Structure Containing Different Equilibrium Cations[J]. Chemical Research In Chinese Universities, 1994, 15(4): 584 |
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| Authors: | WU Tong-Hao JIA Ji-Fei ZHU Li WANG Guo-Jia YANG Hong-Mao JIANG Yu-Zi |
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| Affiliation: | Department of Chemistry, Jilin University, Changchun, 130023 |
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| Abstract: | Molybdophosphoric acid with Keggin structure is an effective catalyst for oxidation reactions. As the central atom, coordinated atom and equilibrium atom in the molydophosphoric acid are displaced in a suitable manner, it exhibits increasing catalytic properties although the structure of the anion keeps unchanging, In this paper a series of Keggin molybdophosphoric acids containing different equilibrium cations were synthesized by a coprecipitation method.The prepared samples were characterized by means of FTIR, XRD and other techniques. Particularly the thermal stability of Li(Na,K, Cs)equilibrium molybdophosphoric salts were investigated. The catalytic acitivity over this series of samplers for one-step oxidation of isobutyraldehyde to produce methacrolic acid was measured as well.The experimental results indicate that Cs+ equilibrium molybdophosphoric salts is the best catalyst for the mentioned reaction. |
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| Keywords: | Molybdophosphoric salt with Keggin structure Equilibrium cation Stability Catalytic oxidation Isobutyraldehyde |
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