以Pb-(BrO_3^-/Br^-)为媒介间接电氧化合成双醛淀粉  

Indirect Electrosynthesis of Double Aldehyde Starch Using Pb-(BrO_3^-/Br^-) as Electro-catalytic Mediator

作　　者：陈妮娜[1] 陈日耀[2] 郑曦[2] 陈晓[2] 陈震[2] 

机构地区：[1]漳州城市职业学院,福建漳州363000 [2]福建师范大学化学与材料学院,福建福州350007

出　　处：《电化学》2009年第4期458-461,共4页Journal of Electrochemistry

基　　金：福建省教育厅(JB06069;JB05314)资助

摘　　要：应用间接氧化法,以Pb为阳极,BrO3-/Br-为氧化媒介,电氧化淀粉制备双醛淀粉.研究了温度、硫酸与淀粉浓度对电合成过程的影响.在35℃,阳极液WNaBr=2%,CH2SO4=0.05 mol/L,W淀粉=10%,电流密度15 mA/cm2的实验条件下,电流效率为50%.In this paper, Nation membrane was used as the separator in the electrolysis cell to indirectly electro- generating the double aldehyde starch （DAS） with BrO3^-/Br^- as a redox mediator and Pb as an anode. Effects of temperature, concentration of sulfuric acid and starch on the electro-oxidation of DAS were discussed. The steady state polarization curves were obtained. The experiment results showed that the current efficiency was over 50% when the electrolysis current density was 15mA/cm^2.

关 键 词：BrO3^-/Br^- 电合成 双醛淀粉 

分 类 号：O636.12[理学—高分子化学]