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

School of Chemistry and Chemical Engineering

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

22 Citations (Scopus)

Abstract

The electrochemical reduction of benzoic acid in the presence and absence of hydrogen (H-2) has been investigated using a 10 mu m diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C(4)mim][NTf2], [C(4)mpyrr][NTf2], [C(4)mim][OTf] and [C(4)mim][BF4], 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
Journal	Physical Chemistry Chemical Physics
Volume	15
Issue number	6
Early online date	10 Dec 2012
DOIs	https://doi.org/10.1039/c2cp43580b
Publication status	Published - 14 Feb 2013

Keywords

EVOLUTION REACTION
KINETICS
MOLTEN-SALTS
PALLADIUM
DISSOLVED HYDROGEN
ELECTROCHEMICAL REDUCTION
BEHAVIOR
ALLOYS
SORPTION
ELECTRO-OXIDATION

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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 (H-2) has been investigated using a 10 mu m diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C(4)mim][NTf2], [C(4)mpyrr][NTf2], [C(4)mim][OTf] and [C(4)mim][BF4], 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).",

keywords = "EVOLUTION REACTION, KINETICS, MOLTEN-SALTS, PALLADIUM, DISSOLVED HYDROGEN, ELECTROCHEMICAL REDUCTION, BEHAVIOR, ALLOYS, SORPTION, ELECTRO-OXIDATION",

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

year = "2013",

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doi = "10.1039/c2cp43580b",

language = "English",

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journal = " Physical Chemistry Chemical Physics ",

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TY - JOUR

T1 - The electroreduction of benzoic acid: 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

Y1 - 2013/2/14

N2 - The electrochemical reduction of benzoic acid in the presence and absence of hydrogen (H-2) has been investigated using a 10 mu m diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C(4)mim][NTf2], [C(4)mpyrr][NTf2], [C(4)mim][OTf] and [C(4)mim][BF4], 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 (H-2) has been investigated using a 10 mu m diameter platinum microelectrode in four different room temperature ionic liquids (RTILs), namely [C(4)mim][NTf2], [C(4)mpyrr][NTf2], [C(4)mim][OTf] and [C(4)mim][BF4], 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).

KW - EVOLUTION REACTION

KW - KINETICS

KW - MOLTEN-SALTS

KW - PALLADIUM

KW - DISSOLVED HYDROGEN

KW - ELECTROCHEMICAL REDUCTION

KW - BEHAVIOR

KW - ALLOYS

KW - SORPTION

KW - ELECTRO-OXIDATION

U2 - 10.1039/c2cp43580b

DO - 10.1039/c2cp43580b

M3 - Article

SN - 1463-9076

VL - 15

SP - 2031

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

Abstract

Keywords

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