研究论文
孔青春,沈济.大气中铁、锰液相催化氧化二氧化硫动力学[J].环境科学学报,1997,17(3):289-294
大气中铁、锰液相催化氧化二氧化硫动力学
- KINETICS OF S(Ⅳ) OXIDATION CATALYZED BY Fe3+ AND Mn2+ IN ATMOSPHERIC AQUEOUS PHASE
- 摘要：研究了pH在3-5的范围内，大气浓度水平下，铁、锰和铁锰共存时的液相催化氧化S(Ⅳ)的动力学。发现在不同的条件下反应级数、表观反应速率常数和活化能不同，证实了铁、锰对S(Ⅳ)的液相催化氧化有明显的协同作用，并给出了许多反应体系的经验速率表达式。
- Abstract：The kinetics of oxidation of S(Ⅳ) catalyzed by Fe3+ and Mn2+ , either separately or together, in aqueous solution was studied over pH range of 3—5 at atmospheric concentrations of species. The reaction orders, apparent reaction rate constants and activation energies are different under different conditions. The catalytic synergism of S(Ⅳ) oxidation between Fe3+ and Mn2+ was confirmed. The empirical rate expressions were obtained for many reaction systems.
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