乙二酸抑制亚硫酸铵氧化的本征反应动力学  

Intrinsic Kinetics of Ammonium Sulfite Oxidation with Inhibitor of Ethanedioic Acid

作　　者：张晓波[1] 潘卫国[1] 郭瑞堂[1] 徐宏建[1] 吴黎明[1] 

机构地区：[1]上海电力学院能源与环境工程学院,上海200090

出　　处：《动力工程学报》2011年第10期756-760,767,共6页Journal of Chinese Society of Power Engineering

基　　金：上海市教委科研创新项目(10YZ155);上海市教委重点学科(G51304);上海市教委第三期本科教育高地建设基金资助项目;上海高校选拔培养优秀青年教师专项基金资助项目(sdl09008);上海市科委科技攻关计划资助项目(09dz120390310dz120140110dz1201402)

摘　　要：利用典型的间歇反应装置,通过改变反应溶液的初始pH值、亚硫酸铵物质的量浓度、乙二酸物质的量浓度以及反应温度,对乙二酸存在条件下亚硫酸铵氧化的本征反应动力学进行了研究.结果表明:随着乙二酸物质的量浓度增加,亚硫酸铵的氧化速率降低;随亚硫酸铵物质的量浓度增加,氧化速率升高;氧化速率对乙二酸与亚硫酸铵的反应级数分别为-0.4和1.1级;在一定温度范围内,亚硫酸铵的氧化速率随温度升高而升高,但反应温度应控制在60°C以下;氧化反应的表观活化能为30.318 kJ·mol-1.Intrinsic kinetics of ammonium sulfite oxidation with existence of ethanedioic acid were studied using intermittent apparatus by changing the initial pH value of solution, the molar concentration of both ammonium sulfite and ethanedioic acid, and the reaction temperature. Results show that the oxidation rate of ammonium sulfite decreases with rising molar concentration of ethanedioic acid, and increases with ris- ing molar concentration of ammonium sulfite itself; the reaction order of ethanedioic acid and ammonium sulfite is respectively -0.4 and 1.2. Under the tested condition, oxidation rate of ammonium sulfite rises with temperature, but the reaction temperture should be controlled below 60℃. The activation energy of oxidation is 30. 318 kJ · mol^-1.

关 键 词：脱硫 乙二酸 亚硫酸铵 催化 抑制 反应动力学 

分 类 号：X773[环境科学与工程—环境工程]