In situ FTIR spectroscopic studies of ethylene glycol electrooxidation on Pd electrode in alkaline solution: The effects of concentration

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	In situ FTIR spectroscopic studies of ethylene glycol electrooxidation on Pd electrode in alkaline solution: The effects of concentration
	Lin, Jian-Long ; Ren, Jie ; Tian, Na ; Zhou, Zhi-You ; Sun, Shi-Gang ; Tian N(田娜) ; Zhou ZY(周志有) ; Sun SG(孙世刚)
刊名	http://dx.doi.org/10.1016/j.jelechem.2012.08.027
	2013
关键词	ALCOHOL FUEL-CELLS INFRARED-SPECTROSCOPY ELECTROCHEMICAL OXIDATION ETHANOL CONCENTRATION PLATINUM-ELECTRODE HIGH-POWER ELECTROCATALYSTS CATALYSTS METHANOL MEDIA
英文摘要	NSFC [21073152, 20933004, 20833005, 21021002]; Major State Basic Research Development Program of China [2012CB215500]; Foundation for the Author of National Excellent Doctoral Dissertation of China [201126]; Fundamental Research Funds for the Central Universities [2010121021]; Program for New Century Excellent Talents in University [NECT-11-0301, NECT-10-0715]; We investigated the electrooxidation of ethylene glycol (EG) on polycrystalline Pd electrode in alkaline by in situ FTIR reflection spectroscopy, and focused on the effects of EG concentration (2 mM-1 M) on the reaction pathways. Voltammetric result shows the reaction order of EG is near 0.5. In situ FTIR results demonstrated that the reaction pathways and the product contribution strongly depend on the EG concentration. The oxidation degree of EG decreases with increasing EG concentration, and the main products gradually varies from CO32-, C2O42-, glyoxylate, to glycolate. Bridge-bonded CO (COB), generated from dissociative adsorption of EG, can be easily oxidized at low EG concentration. These facts were attributed to the competitive adsorption of EG itself and reaction intermediates with water, which inhibits the formation of oxygen species from water dissociation, a key oxygen donor for deep oxidation of EG. Even though, EG is still much better than ethanol as candidate fuel for alkaline direct alcohol fuel cells. The present study is of importance for understanding reaction mechanism of EG electrooxidation. (c) 2012 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88804]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Lin, Jian-Long,Ren, Jie,Tian, Na,et al. In situ FTIR spectroscopic studies of ethylene glycol electrooxidation on Pd electrode in alkaline solution: The effects of concentration[J]. http://dx.doi.org/10.1016/j.jelechem.2012.08.027,2013.
APA	Lin, Jian-Long.,Ren, Jie.,Tian, Na.,Zhou, Zhi-You.,Sun, Shi-Gang.,...&孙世刚.(2013).In situ FTIR spectroscopic studies of ethylene glycol electrooxidation on Pd electrode in alkaline solution: The effects of concentration.http://dx.doi.org/10.1016/j.jelechem.2012.08.027.
MLA	Lin, Jian-Long,et al."In situ FTIR spectroscopic studies of ethylene glycol electrooxidation on Pd electrode in alkaline solution: The effects of concentration".http://dx.doi.org/10.1016/j.jelechem.2012.08.027 (2013).