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	Electrochemical and In Situ FTIR Studies of Adsorption and Oxidation of Dimethyl Ether on Platinum Electrode
	Pan, Lei-Ming ; Pan LM(潘磊明) ; Zhou, Zhi-You ; Zhou ZY(周志有) ; Chen, De-Jun ; Chen DJ(陈德俊) ; Sun, Shi-Gang ; Sun SG(孙世刚)
	2008-08
关键词	Dimethyl ether Electrooxidation pH effect In situ FTIR spectroscopy Platinum electrode
英文摘要	Dissociative adsorption and electrooxidation of dimethyl ether (DME) on a platinum electrode in different pH solutions were studied using cyclic voltammetry (CV) and in situ FTIR reflection spectroscopy. The coverage of the dissociative adsorbed species was measured about 70% from hydrogen adsorption-desorption region (0.05-0.35 V(vs RHE)) of steady-state voltammogram recorded in 0.1 mol center dot L-1 H2SO4 solution. It was found that the electrochemical reactivity of DME was pH dependent, i.e., the larger the pH value was, the less the reactivity of DME would be. No perceptible reactivity of DME in 0.1 mol center dot L-1 NaOH solution could be detected. It was revealed that the protonation of the oxygen atom in the C-O-C bond played a key role in the electrooxidation of DME. In situ FTIR spectroscopic results illustrated that linearly bonded CO (COL) species determined at low potential region were derived from the dissociative adsorption of DME and behaved as 'poisoning' intermediate. The COL species could be oxidized to CO2 at potential higher than 0.55 V (vs RHE), and in the potential range from 0.75 to 1.00 V (vs RHE) DME was oxidized simultaneously via HCOOH species that were identified as the reactive intermediates.
语种	英语
出版者	PEKING UNIV PRESS
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:CNKI:SUN:WLHX.0.2008-10-002]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Pan, Lei-Ming,Pan LM,Zhou, Zhi-You,et al. Electrochemical and In Situ FTIR Studies of Adsorption and Oxidation of Dimethyl Ether on Platinum Electrode[J],2008.
APA	Pan, Lei-Ming.,潘磊明.,Zhou, Zhi-You.,周志有.,Chen, De-Jun.,...&孙世刚.(2008).Electrochemical and In Situ FTIR Studies of Adsorption and Oxidation of Dimethyl Ether on Platinum Electrode..
MLA	Pan, Lei-Ming,et al."Electrochemical and In Situ FTIR Studies of Adsorption and Oxidation of Dimethyl Ether on Platinum Electrode".(2008).

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