| m(SA-CS)BM串联电解槽双成对电解制备乙醛酸 |
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| 引用本文： | 董燕青,郑曦,陈日耀,陈晓,陈震.m(SA-CS)BM串联电解槽双成对电解制备乙醛酸[J].离子交换与吸附,2009,25(1). |
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| 作者姓名： | 董燕青 郑曦 陈日耀 陈晓 陈震 |
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| 作者单位： | 福建师范大学化学与材料学院,福州,350007 |
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| 基金项目： | 福建省自然科学基金，福建省教育厅资助项目 |
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| 摘 要： | 分别用戊二醛和二价锡离子改性壳聚糖(CS)和海藻酸钠(SA),制备改性海藻酸钠/亮聚糖双极膜m(SA-CS)BM].将其作为双阴阳极电解槽的隔膜,应用于双成对电合成乙醛酸体系.在电场的作用下,双极膜中水电离后生成的H+透过Msa阳离子膜进入阴极室,以补充草酸电还原生成乙醛酸过程中H+的消耗;OH-透过Mcs阴离子膜进入阳极室,与乙二醛电氧化生成乙醛酸过程中产生的H+结合生成H2O,以增大正向反应的速度.在电流密度为30mA/cm2,20℃下电解,双阴极室的电流效率分别可达86.94%和82.81%,双阳极室的电流效率可达81.99%和78.62%,电解电压稳定在3.0V左右.
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| 关 键 词： | 草酸 乙二醛 乙醛酸 |
ELECTRO-GENERATION OF GYOXYLIC ACID IN DOUBLE PAIRS IN SERIES CONNECTION CELLS SEPARATING BY m(SA-CS) BM |
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| DONG Yanqing,ZHENG Xi,CHEN Riyao,CHEN Xiao,CHEN Zhen.ELECTRO-GENERATION OF GYOXYLIC ACID IN DOUBLE PAIRS IN SERIES CONNECTION CELLS SEPARATING BY m(SA-CS) BM[J].Ion Exchange and Adsorption,2009,25(1). |
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| Authors: | DONG Yanqing ZHENG Xi CHEN Riyao CHEN Xiao CHEN Zhen |
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| Institution: | DONG Yanqing ZHENG Xi CHEN Riyao CHEN Xiao CHEN Zhen Experiment Center,College of Chemistry , Materials Science Fujian Normal University,Fuzhou 350007,China |
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| Abstract: | Modified SA/CS Bipolar Membrane m(SA-CS) BM was prepared by chitosan(CS) and alginate(SA) modified by glutaraldehyde and ferric chloride as linking reagents,respectively.The cylinder electrolytic cell was constituted by double anode, using m(SA-CS) BM as septum in electrolysis cell for electro-generating glyoxylic acid.The experiment results show that H+ generated by BM moves into cathode chamber in time from mSA to supplement H+ consumed by electro-reduction of oxalic acid to generate glyoxylic acid;OH-mov... |
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| Keywords: | m(SA-CS)BM |
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