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研究了N_2H_4在间-四(邻-硝基苯基)四苯并卟啉铁(Ⅲ)、钴(Ⅱ)、锌(Ⅱ)和镍(Ⅱ)配合物[MTP(o-NO_2)TBP,简称MTBP]修饰石墨电极上的催化电氧化反应,测得该系列金属四苯并卟啉的催化活性的顺序为Co(Ⅱ)TBP>ClFe(Ⅲ)TBP>Ni(Ⅱ)TBP>Zn(Ⅱ)TBP≈石墨,考察了Co(Ⅱ)TBP和ClFe(Ⅲ)TBP催化联氨电氧化反应的动力学过程.结果表明,OH~-和N_2H_4在ClFe(Ⅱ)TBP修饰电极上的反应级数分别为2和1,而在Co(Ⅱ)TBP修饰电极上的均为1.根据电化学参数提出了可能的反应机理.
The effects of N_2H_4 on the activity of the complexes of iron (Ⅲ), cobalt (Ⅱ), zinc (Ⅱ) and nickel (Ⅱ) (MTBP) modified graphite electrode, the catalytic activity of the series of tetrabenzoporphyrins was measured in the order of Co (Ⅱ) TBP> ClFe (Ⅲ) TBP> Ni (Ⅱ) TBP> ) TBP ≈ graphite, the kinetics of catalytic hydrazine oxidation by Co (Ⅱ) TBP and ClFe (Ⅲ) TBP was investigated. The results showed that the reaction order of OH ~ - and N_2H_4 on the ClFe (Ⅱ) 2 and 1 respectively, respectively, and all of them were 1 at the Co (Ⅱ) TBP modified electrode. The possible reaction mechanism was proposed according to the electrochemical parameters.