Linear paired electrochemical valorization of glycerol - PowerPoint PPT Presentation
Title:
Linear paired electrochemical valorization of glycerol
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Electrochemical valorization of surplus biomass-derived feedstocks, such as glycerol, into high-value chemicals offers a sustainable route for utilization of biomass resources and decarbonization of chemical manufacturing; however, glycerol is typically valorized solely via anodic oxidation, with lower-value products such as hydrogen gas generated at the cathode. Here, we establish the efficient cathodic valorization of glycerol to the desirable C3 oxidation products via the electro-Fenton process at a stable NiSe2 cathode, built upon the theoretical understanding and experimental demonstration of the high selectivity and stability of NiSe2 toward acidic H2O2 electrosynthesis. – PowerPoint PPT presentation
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Title: Linear paired electrochemical valorization of glycerol
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Linear paired electrochemical valorization of
glycerol
Literature Presentation Debabrata Bagchi Ph. D.
Student 24/09/2022
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(No Transcript)
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Glycerol
Green Chem., 2021, 23, 78657889
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Glycerol Oxidation
ACS Catal. 2018, 8, 6301-6333
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Reaction kinetics involving H2O-H2-O2
HOR
HER
OER
ORR
M.T.M. Koper, H.A. Heering, in Fuel Cell
Science, Eds. A. Wieckowski, J.K. Nørskov, Wiley
(2010), p. 71-110
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Organic Molecule Oxidation
Nat. Catal, 2022, 5, 66-73
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Linear paired electrochemical valorization of
glycerol
Glycerol oxidation reaction
Oxygen reduction reaction
EH2O21.76 V
Oxidation
E.OH2.8 V
Oxidation
Fenton's reagent
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Overall Process
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Catalyst for O2 to H2O2
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Stability of NiSe2
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Characterization NiSe2
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Characterization CoSe2
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RRDE Experiment ECSA
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ORR Performance of metal-selenide
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Stability during ORR
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Post Electrochemical Characterizations
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Bulk Electrolysis on carbon fibre paper
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Bulk Electrochemical Cell
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ORR Performance during Bulk Electrolysis
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Stability of Bulk Electrolysis
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Net H2O2 Production
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Stability of H2O2 Production
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Glycerol valorization via the electro-Fenton
process
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Standard 1H and 13C NMR
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Role of Fe2
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Impact of Fe2 Concentration
(Fe2 OH H? Fe3 H2O)
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Impact of Fe2 Concentration
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Stability after Electro-Fenton Process
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Anodic glycerol oxidation
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Glycerol oxidation Reduction
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Linear paired glycerol valorization
(condition I 0.1 M NaHSO4/Na2SO4 for catholyte
and 0.05 M H2SO4 for anolyte condition II 0.5 M
NaHSO4/Na2SO4 for catholyte and 0.5 M H2SO4 for
anolyte)
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Summary
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(No Transcript)
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