Electroreduction of 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquid: Oriented product selectivity through the electrode material

被引：12
作者：
Michez, Roman [1 ]
Vander Steen, Julien [1 ]
Doneux, Thomas [1 ]
Luhmer, Michel [2 ]
Buess-Herman, Claudine [1 ]
机构：
[1] Univ Libre Bruxelles, Serv Chim Analyt & Chim Interfaces, Blvd Triomphe 2,CP 255, B-1050 Brussels, Belgium
[2] Univ Libre Bruxelles, Lab Resonance Magnet Nucl Haute Resolut, Ave F-D Roosevelt 50,CP 160-08, B-1050 Brussels, Belgium
来源：
ELECTROCHIMICA ACTA | 2018年 / 270卷
关键词：
1-butyl-3-methylimidazolium; bis(trifluoromethanesulfonyl)imide; Ionic liquid; Carbene; NMR spectroscopy; Gold; Platinum; N-HETEROCYCLIC CARBENES; ELECTROCHEMICAL REDUCTION; PLATINUM-ELECTRODES; CARBON-DIOXIDE; STABILITY; REACTIVITY; MECHANISMS; WINDOWS; CATION; SALTS;
D O I：
10.1016/j.electacta.2018.03.057
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A new insight into the electrochemical reduction mechanism of imidazolium cations is given by examining the cathodic stability of the 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide [BMIm][NTf2] ionic liquid at platinum, gold, copper and mercury electrodes. Potentiostatic electrolyses were performed under nitrogen-saturated conditions and the major reduction products of the BMIm(+) cation were quantified by H-1 NMR spectroscopy. The product selectivity is influenced by the electrode material and by the presence of an additional proton source in the medium, evidencing the key role of adsorbed hydrogen in the mechanism of BMIm(+) electroreduction. (c) 2018 Elsevier Ltd. All rights reserved.
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收藏
页码：434 / 439
页数：6
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