Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte

Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte

An ionic liquid/organic solvent mixture was adopted as an electrolyte for the electrochemical reduction of N2O. The ionic liquid and organic solvent used for the electrolyte were 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) and propylene carbonate (PC), respectively. The use of [BMIM]...

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Main Authors: Hyeonsu Kim, Seungyeon Baek, Taeho Lim, Jae Jeong Kim
Format: Article
Language:English
Published: Elsevier 2020-04-01
Series:Electrochemistry Communications
Online Access:http://www.sciencedirect.com/science/article/pii/S1388248120300394
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spelling doaj-bf334fa8fbe340dc8e56a2b6299f7e312020-11-25T02:24:19ZengElsevierElectrochemistry Communications1388-24812020-04-01113Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyteHyeonsu Kim0Seungyeon Baek1Taeho Lim2Jae Jeong Kim3School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, Gwanak 1, Gwanak-ro, Gwanak-gu, Seoul 151 744, Republic of KoreaSchool of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, Gwanak 1, Gwanak-ro, Gwanak-gu, Seoul 151 744, Republic of KoreaDepartment of Chemical Engineering, Soongsil University, Sangdo 369, Sangdo-ro, Dongjak-gu, Seoul 156 743, Republic of Korea; Corresponding authors.School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, Gwanak 1, Gwanak-ro, Gwanak-gu, Seoul 151 744, Republic of Korea; Corresponding authors.An ionic liquid/organic solvent mixture was adopted as an electrolyte for the electrochemical reduction of N2O. The ionic liquid and organic solvent used for the electrolyte were 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) and propylene carbonate (PC), respectively. The use of [BMIM][BF4] in place of aqueous solutions improves the solubility of N2O and also avoids the hydrogen evolution reaction, which is the main side reaction in an aqueous solution. The low electrical conductivity and high viscosity of [BMIM][BF4], the main disadvantages in the context of electrochemical reactions, were compensated on introducing PC. The composition of the [BMIM][BF4]/PC was optimized considering both the electrical conductivity and N2O stability in the solution. For the optimized [BMIM][BF4]/PC, a high faradaic efficiency (>90%) was achieved for N2O reduction to N2. Keywords: N2O, Electrochemical reduction, Ionic liquid, Non-aqueous solutionhttp://www.sciencedirect.com/science/article/pii/S1388248120300394
collection DOAJ
language English
format Article
sources DOAJ
author Hyeonsu Kim
Seungyeon Baek
Taeho Lim
Jae Jeong Kim
spellingShingle Hyeonsu Kim
Seungyeon Baek
Taeho Lim
Jae Jeong Kim
Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte
Electrochemistry Communications
author_facet Hyeonsu Kim
Seungyeon Baek
Taeho Lim
Jae Jeong Kim
author_sort Hyeonsu Kim
title Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte
title_short Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte
title_full Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte
title_fullStr Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte
title_full_unstemmed Electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte
title_sort electrochemical reduction of nitrous oxide in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolyte
publisher Elsevier
series Electrochemistry Communications
issn 1388-2481
publishDate 2020-04-01
description An ionic liquid/organic solvent mixture was adopted as an electrolyte for the electrochemical reduction of N2O. The ionic liquid and organic solvent used for the electrolyte were 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) and propylene carbonate (PC), respectively. The use of [BMIM][BF4] in place of aqueous solutions improves the solubility of N2O and also avoids the hydrogen evolution reaction, which is the main side reaction in an aqueous solution. The low electrical conductivity and high viscosity of [BMIM][BF4], the main disadvantages in the context of electrochemical reactions, were compensated on introducing PC. The composition of the [BMIM][BF4]/PC was optimized considering both the electrical conductivity and N2O stability in the solution. For the optimized [BMIM][BF4]/PC, a high faradaic efficiency (>90%) was achieved for N2O reduction to N2. Keywords: N2O, Electrochemical reduction, Ionic liquid, Non-aqueous solution
url http://www.sciencedirect.com/science/article/pii/S1388248120300394
work_keys_str_mv AT hyeonsukim electrochemicalreductionofnitrousoxidein1butyl3methylimidazoliumtetrafluoroborateionicliquidelectrolyte
AT seungyeonbaek electrochemicalreductionofnitrousoxidein1butyl3methylimidazoliumtetrafluoroborateionicliquidelectrolyte
AT taeholim electrochemicalreductionofnitrousoxidein1butyl3methylimidazoliumtetrafluoroborateionicliquidelectrolyte
AT jaejeongkim electrochemicalreductionofnitrousoxidein1butyl3methylimidazoliumtetrafluoroborateionicliquidelectrolyte
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