固定床电解槽变电流成对电解合成乙醛酸

CORC > 厦门大学 > 2002年第8卷

	固定床电解槽变电流成对电解合成乙醛酸; Varying Current Electro-synthesis of Glyoxalic Acid in Pairs in the Fixed-bed Electrolytic Cell
	陈银生 ; 张新胜 ; 戴迎春 ; 袁渭康 ; CHEN Yin sheng ; ZHANG Xin sheng ; DAI Ying chun ; YUAN Wei Kang
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9210.shtml
	2002-02-28
关键词	乙醛酸成对电合成固定床电解槽变电流电解乙二醛草酸 Glyoxalic acid Paired electro synthesis Fixed bed electrolytic cell Varying current electrolysis Glyoxal Oxalic acid
英文摘要	对电解氧化乙二醛合成乙醛酸过程 ,固定床电解槽和变电流电解效果明显优于平板型电解槽和恒电流电解效果 .当阳极液中乙二醛和盐酸初始质量分数 (WCHOCHO 和WHCI)分别等于7.0 %和 8.0 %、阴极液为始终饱和的草酸溶液和微量的添加剂时 ,采用平均电流密度 (i)为 15 35A/m2 的变电流方式电解 ,阳极电流效率 (CEa)为 85 .3%、乙醛酸选择性 (RSa)为 93.9% ;阴极电流效率 (CEc)为 86 .7% ,乙醛酸选择性 (RSc)为 94 .0 % .阳极初产品中WCHOCOOH∶WCHOCHO≥ 4 0∶3,克服了阳极产品中乙二醛难以除去的困难; As for the process of the electro oxidation of glyoxal to glyoxalic acid, the electrolytic result of either fixed bed electrolytic cell or varying current electrolysis was better than that of either flat plate electrolytic cell or constant current electrolysis. The average current density of varying current electro synthesis of glyoxalic acid in pairs was 1535 A/m 2 and the current efficiency were 85.3% and 86.7% and the selectivity were 93.9% and 94.0% for the anodic oxidation and cathodal reduction respectively. The initial composition of anodic electrolyte was 7% glyoxal and 8% hydrochloric acid (W/W) and the cathodal electrolyte consisted of saturated oxalic acid aqueous solution mixed with trace quantity of additive. The mass ratio of glyoxalic acid to glyoxal of the primary anodic product was over 40∶3, which avoided the separation of glyoxal from glyoxalic acid aqueous solution.; 作者联系地址：华东理工大学联合化学反应工程研究所反应工程国家重点实验室,华东理工大学联合化学反应工程研究所反应工程国家重点实验室,华东理工大学联合化学反应工程研究所反应工程国家重点实验室,华东理工大学联合化学反应工程研究所反应工程国家重点实验室上海200237 ,上海200237 ,; Author's Address: UNILAB Research Center of Chem. Reaction Engin., East China Univ. of Sci. and Tech., State Key Lab.for Reaction Engin., Shanghai 200237,China
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/57709]
专题	2002年第8卷
推荐引用方式 GB/T 7714	陈银生,张新胜,戴迎春,等. 固定床电解槽变电流成对电解合成乙醛酸, Varying Current Electro-synthesis of Glyoxalic Acid in Pairs in the Fixed-bed Electrolytic Cell[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9210.shtml,2002.
APA	陈银生.,张新胜.,戴迎春.,袁渭康.,CHEN Yin sheng.,...&YUAN Wei Kang.(2002).固定床电解槽变电流成对电解合成乙醛酸.http://electrochem.xmu.edu.cn/CN/abstract/abstract9210.shtml.
MLA	陈银生,et al."固定床电解槽变电流成对电解合成乙醛酸".http://electrochem.xmu.edu.cn/CN/abstract/abstract9210.shtml (2002).