草酸在Ti/IrO_2-Ta_2O_5阳极圆柱形电解槽中的电催化氧化降解动力学  

Electrocatalytic Oxidation Degradation Kinetics of Oxalic Acid in a Cylindrical Electrochemical Reactor with Ti/IrO_2-Ta_2O_5 Anode

作　　者：苏静[1,2] 林海波[1] 徐红[3] 黄卫民[1] 何亚鹏[1] 

机构地区：[1]吉林大学化学学院,吉林长春410083 [2]广西大学化学化工学院,广西南宁530004 [3]江苏法尔胜泓昇集团有限公司,214400

出　　处：《电化学》2013年第4期293-299,共7页Journal of Electrochemistry

基　　金：国家自然科学基金项目(No.21273097);高等学校博士学科点专项科研基金项目(No.20120061110015)资助

摘　　要：从电催化氧化降解有机污染物的机理出发,研究了草酸在Ti/IrO2-Ta2O5阳极圆柱形电解槽中的电催化氧化过程,建立了描述整个降解过程的瞬时电流效率与溶液本体有机物浓度的关系式.通过实验对模型进行了验证,实验结果与模型计算结果基本一致,并讨论了误差产生的原因.The electrocatalytic oxidation degradation kinetics of oxalic acid in a cylindrical electrochemical reactor with Ti/IrO2-Ta205 as an anode was studied. The relation between instantaneous current efficiency and organic concentration in bulk was established based on the two paths for direct electrochemical oxidations, and the theoretical model was verified by experiments. The experimental results were reasonably consistent with the established kinetic model. Furthermore, the competition between the two paths was explored with the model parameter analysis.

关 键 词：电催化氧化 TI IrO2-Ta2O5阳极 草酸 理论模型 

分 类 号：X703[环境科学与工程—环境工程] O643.32[理学—物理化学]