波谱学杂志 ›› 2009, Vol. 26 ›› Issue (1): 37-43.

• 研究论文 • 上一篇    下一篇

Rh基催化剂上氢甲酰化反应过程的原位高压NMR研究

兰喜杰1,3; 张维萍1; 严丽2; 丁云杰2; 韩秀文1; 林励吾1; 包信和1*
  

  1. [1.催化基础国家重点实验室(中国科学院 大连化学物理研究所), 辽宁 大连 116023; 2.应用催化研究室(中国科学院 大连化学物理研究所), 辽宁 大连 116023;3.中国科学院 研究生院,北京 100049]
  • 收稿日期:2008-09-08 修回日期:2008-09-18 出版日期:2009-03-05 发布日期:2009-12-05
  • 通讯作者: 包信和

The Reaction Process of Propene Hydroformalytion on PPh3-Rh/SBA-15 Catalyst Studied by In Situ High-ressure MAS NMR Spectroscopy

LAN Xi-jie1,3; ZHANG Wei-ping1; YAN Li2; DING Yun-jie2; HAN Xiu-wen1; LIN Li-wu1; BAO Xin-he1*
  

  1. [1.State Key Laboratory of Catalysis (Dalian Institute of Chemical Physics,
    Chinese Academy of Sciences), Dalian 116023, China; 2.Natural Gas Utilization and Applied Catalysis Laboratory (Dalian Institute of Chemical Physics,
    Chinese Academy of Sciences), Dalian 116023, China; 3.Graduate School of Chinese Academy of Sciences, Beijing 100049, China]
  • Received:2008-09-08 Revised:2008-09-18 Online:2009-03-05 Published:2009-12-05
  • Contact: BAO Xin-he

摘要: 制备了用于丙烯氢甲酰化反应的Rh/SBA-15 和PPh3修饰的PPh3-Rh/SBA-15催化剂. 应用原位变温高压核磁共振技术,对比研究了丙烯在Rh/SBA-15 和PPh3修饰的多相催化剂PPh3Rh/SBA-15上的氢甲酰化反应,实现了高压条件下催化反应的原位固体核磁共振表征. 13C MAS NMR研究结果表明:在1.0 MPa的反应压力下,随着反应温度升高丙烯与合成气在Rh/SBA-15催化剂上可转化生成丁醛,而PPh3配体修饰的PPh3-Rh/SBA-15催化剂上丁醛产物的正异比显著提高.

关键词: 氢甲酰化反应, 核磁共振(NMR), 原位高压固体核磁共振, Rh/SBA-15催化剂, 反应过程

Abstract: Rh/SBA-15 and ligand (triphenyl phosphine PPh3) modified heterogeneous PPh3-Rh/SBA-15 catalysts for the reaction of propene hydroformylation were prepared. The reaction process of propene hydroformylation on the Rh/SBA-15 and PPh3-Rh/SBA-15 catalysts was studied by in situ high-pressure(HP)MAS NMR techniques under the batch-like conditions. 13C MAS NMR spectra indicated that, with increasing temperature, propene and syngas could be converted into butyraldehyde on Rh/SBA-15 catalyst while the PPh3 modified heterogeneous PPh3-Rh/SBA-15 catalyst exhibited higher n/i ratio of butyraldehyde at 1.0 MPa.

Key words: NMR, hydroformylation, in situ high-pressure MAS NMR, Rh/SBA-15 catalyst, reaction process

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