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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (6): 557-560. 上一篇    下一篇

研究论文

四苯基钴卟啉化合物催化过亚硝酸根分解的研究

张伟1, 罗云敬*,1, 钟儒刚1, 郑大威1, 佘远斌2   

  1. 北(1北京工业大学生命科学与生物工程学院 北京 100022)
    (2北京工业大学环境与能源工程学院 北京 100022)
  • 投稿日期:2006-04-27 修回日期:2006-06-26 发布日期:2007-03-28
  • 通讯作者: 罗云敬

Study on the Catalysis of Peroxynitrite Decomposition by Cobalt Tetraphenylporphyrin Compounds

ZHANG Wei1; LUO Yun-Jing*,1; ZHONG Ru-Gang1; ZHENG Da-Wei1; SHE Yuan-Bin2   

  1. (1 College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100022)
    (2 College of Environmental and Energy Engineering, Beijing Uni-versity of Technology, Beijing 100022)
  • Received:2006-04-27 Revised:2006-06-26 Published:2007-03-28
  • Contact: LUO Yun-Jing

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被引次数

4 | 1

利用紫外-可见分光光度计在乙醇介质中研究了合成的4种对位取代四苯基钴卟啉对过亚硝酸根分解的催化作用. 首次发现钴卟啉可以催化ONOO－分解, 且对位带吸电子基团的钴卟啉比对位带供电子基团的钴卟啉催化活性高. TPPCoCl, T(p-CH3)PPCoCl, T(p-OCH3)PPCoCl和T(p-Cl)PPCoCl在乙醇中的kcat分别为1.69×102, 1.52×102, 1.43×102和1.20×103 mol－1•L•s－1. 动力学曲线和时间分辨谱证明这些钴卟啉是通过形成中间体催化过亚硝酸根分解的.

关键词: 钴卟啉, 催化活性, 过亚硝酸根, 中间体

Four cobalt tetraphenylporphyrins which are substituted in the para-position of a phenyl ring were synthesized, and their abilities to accelerate peroxynitrite decomposition were studied in ethanol by UV-Vis spectrophotometer. The catalysis of peroxynitrite decomposition by cobalt porphyrins was firstly found, and the catalytic activities of cobalt porphyrins with electron-withdrawing groups located in the para-position of a phenyl ring were higher than those with electron-donating groups located in the para-position of a phenyl ring. The kcat of TPPCoCl, T(p-CH3)PPCoCl, T(p-OCH3)PPCoCl and T(p-Cl)- PPCoCl are 1.69×102, 1.52×102, 1.43×102 and 1.20×103 mol－1•L•s－1 respectively. T(p-R)PPCoCl catalyzed peroxynitrite decomposition through the formation of intermediates from the observation of kinetic traces and time-resolved UV-Vis spectrum.

Key words: cobalt porphyrin, catalytic activity, peroxynitrite, intermediate