The electroreduction of benzoic acid: Voltammetric observation of adsorbed hydrogen at a platinum microelectrode in room temperature ionic liquids

Yao Meng; Sarah Norman; Christopher Hardacre; Richard G. Compton

doi:10.1039/c2cp43580b

The electroreduction of benzoic acid: Voltammetric observation of adsorbed hydrogen at a platinum microelectrode in room temperature ionic liquids

Yao Meng
, Sarah Norman
, Christopher Hardacre
, Richard G. Compton^*

^*Corresponding author for this work

Oxford University
Queen's University Belfast

Research output: Contribution to journal › Article › peer-review

Abstract

The electrochemical reduction of benzoic acid in the presence and absence of hydrogen (H₂) has been investigated using a 10 μm diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C₄mim][NTf₂], [C₄mpyrr] [NTf₂], [C₄mim][OTf] and [C₄mim][BF ₄], versus Ag/Ag⁺. In all cases, reductive voltammetry is observed, and is suggested to occur via a CE mechanism in which dissociation of benzoic acid is followed by electron transfer to H⁺ ultimately forming adsorbed hydrogen. Furthermore, the adsorbed H atoms, formed from the reduction of benzoic acid, could be used to achieve the rapid hydrogenolysis of the organic compound (bis(benzyloxycarbonyl)-l-lysine) on the timescale of the voltammetric technique under moderate conditions (25 °C).

Original language	English
Pages (from-to)	2031-2036
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	15
Issue number	6
DOIs	https://doi.org/10.1039/c2cp43580b
Publication status	Published - 14 Feb 2013

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title = "The electroreduction of benzoic acid: Voltammetric observation of adsorbed hydrogen at a platinum microelectrode in room temperature ionic liquids",

abstract = "The electrochemical reduction of benzoic acid in the presence and absence of hydrogen (H2) has been investigated using a 10 μm diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C4mim][NTf2], [C4mpyrr] [NTf2], [C4mim][OTf] and [C4mim][BF 4], versus Ag/Ag+. In all cases, reductive voltammetry is observed, and is suggested to occur via a CE mechanism in which dissociation of benzoic acid is followed by electron transfer to H+ ultimately forming adsorbed hydrogen. Furthermore, the adsorbed H atoms, formed from the reduction of benzoic acid, could be used to achieve the rapid hydrogenolysis of the organic compound (bis(benzyloxycarbonyl)-l-lysine) on the timescale of the voltammetric technique under moderate conditions (25 °C).",

author = "Yao Meng and Sarah Norman and Christopher Hardacre and Compton, \{Richard G.\}",

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doi = "10.1039/c2cp43580b",

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journal = "Physical Chemistry Chemical Physics",

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TY - JOUR

T1 - The electroreduction of benzoic acid

T2 - Voltammetric observation of adsorbed hydrogen at a platinum microelectrode in room temperature ionic liquids

AU - Meng, Yao

AU - Norman, Sarah

AU - Hardacre, Christopher

AU - Compton, Richard G.

PY - 2013/2/14

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N2 - The electrochemical reduction of benzoic acid in the presence and absence of hydrogen (H2) has been investigated using a 10 μm diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C4mim][NTf2], [C4mpyrr] [NTf2], [C4mim][OTf] and [C4mim][BF 4], versus Ag/Ag+. In all cases, reductive voltammetry is observed, and is suggested to occur via a CE mechanism in which dissociation of benzoic acid is followed by electron transfer to H+ ultimately forming adsorbed hydrogen. Furthermore, the adsorbed H atoms, formed from the reduction of benzoic acid, could be used to achieve the rapid hydrogenolysis of the organic compound (bis(benzyloxycarbonyl)-l-lysine) on the timescale of the voltammetric technique under moderate conditions (25 °C).

AB - The electrochemical reduction of benzoic acid in the presence and absence of hydrogen (H2) has been investigated using a 10 μm diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C4mim][NTf2], [C4mpyrr] [NTf2], [C4mim][OTf] and [C4mim][BF 4], versus Ag/Ag+. In all cases, reductive voltammetry is observed, and is suggested to occur via a CE mechanism in which dissociation of benzoic acid is followed by electron transfer to H+ ultimately forming adsorbed hydrogen. Furthermore, the adsorbed H atoms, formed from the reduction of benzoic acid, could be used to achieve the rapid hydrogenolysis of the organic compound (bis(benzyloxycarbonyl)-l-lysine) on the timescale of the voltammetric technique under moderate conditions (25 °C).

UR - https://www.scopus.com/pages/publications/84872690041

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DO - 10.1039/c2cp43580b

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EP - 2036

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 6

ER -

The electroreduction of benzoic acid: Voltammetric observation of adsorbed hydrogen at a platinum microelectrode in room temperature ionic liquids

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