N_2H_4与Fe(Ⅲ)定向反应的研究

Studies on the Directional Reaction of N_2H_4 With Fe(Ⅲ)

本文研究了温度、浓度比、pH及Cu(Ⅲ)离子对N_2H_4与Fe(Ⅲ)定向反应的影响,得出N_2H_4对Fe(Ⅲ)的还原以单电子反应为主(反应1),同时存在部分四电子反应(反应2),N_2H_4四电子反应率随pH的增高、[Fe^(3+)]_0/[N_2H_4]_0浓度比的增大,温度的升高及添加微量Cu(Ⅰ)离子而增大.N_2H_4+Fe(Ⅲ)——(1/2)N_2+NH_4^++Fe(Ⅱ) (1)N_2H_4+4Fe(Ⅲ)——N_2+4H^+4Fe(Ⅱ) (2)

The influence of temperature, concentration ratio, pH and copper (Ⅱ) on the directional reaction of N2H4 with iron(Ⅲ) has been studied. The reaction of iron (Ⅲ) with N2H4 prefers to one-electron reaction. Simultaneously, four-electron reaction exits partially. The ratio of four-electron reaction of N2H4 increases as raising pH volue, [Fe(Ⅲ)]0/[N2H4]0 concentration ratio, temperature and as adding copper(Ⅱ) into the reaction mixture.