| 刘蒲,朱卫卫,殷元骐.RuCl3/PPh3催化顺酐加氢为琥珀酸酐的反应机理研究[J].分子催化,2002,(4):253-257 |
| RuCl3/PPh3催化顺酐加氢为琥珀酸酐的反应机理研究 |
| Study on Mechanism of the Hydrogenation of Maleic Anhydride to Succinic Anhydride Catalyzed by RuCl3/PPh3 |
| 修订日期：2001-11-05 |
| DOI： |
| 中文关键词: 琥珀酸酐 RuCl3／PPh3 原位IR 顺酐 反应机理 催化加氢 氢化钌 催化剂 |
| 英文关键词:RuCl\-3/PPh\-3,In\|situ \{\}\+\{31\}P NMR,In\|situ IR,Hydrogenation of maleic anhydride,Active species,Mechanism |
| 基金项目:河南省自然科学基金，0111030900， |
| 刘蒲 朱卫卫 殷元骐 |
| [1]郑州大学化学系工业催化研究所，河南郑州450052 [2]中国科学院兰州化学物理研究所，甘肃兰州730000 |
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| 中文摘要: |
| 利用原位^31P NMR,IR技术跟踪了RuCl3/PPh3催化顺酐加氢过程，并考察了酸碱的添加对反应的影响。根据实验结果，提出了在RuCl3/PPh3催化剂体系作用下，顺酐均相加氢生成琥珀酐的反应历程：RuCl3/PPh3在反应体系中生成活性物种RuHCl(PPh3)，顺酐以C＝C双键与Ru-H活性物种配位生成配合物，此配合物分子内氢转移，形成金属烷基化物，该化合物再与氢进行氧化加成，还原脱出产物琥珀酸酐和Ru-H活性物种，完成整个催化循环。 |
| 英文摘要: |
| In this paper, \{\}\+\{31\}P NMR and IR were used in situ techniques to characterize RuCl\-3/PPh\-3 catalyst, the effect of acids and bases on the hydrogenation of maleic anhydride to succinic anhydride was also studied. Based on the results, the catalytic cycle on the hydrogenaton of maleic anhydride to succinic anhydride catalysed by RuCl\-3/PPh\-3 has been proposed. (1) The active species RuHCl(PPh\-3)\-3 was formed by \{RuCl\-3/\}PPh\-3 in situ characterization; (2) The carbon carbon double bond of maleic anhydride coordinated with the active species to form coordination compound; (3) The metallic alkyl compound was formed by the hydrogen transfer; (4) The metallic alkyl compound reacted with hydrogen to yield succinic anhydride and to restore the active species RuHCl(PPh\-3)\-3. |
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