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Effect of pore mesostructure on the electrooxidation of glycerol on Pt mesoporous catalysts
Department of Material Science and Engineering, Ångström Laboratory, Uppsala University, Box 35 751 03 Uppsala Sweden.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.ORCID iD: 0000-0002-9181-9825
Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577 Japan.
Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm 106 Sweden.
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2023 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, E-ISSN 2050-7496, Vol. 11, no 31, p. 16570-16577Article in journal (Refereed) Published
Abstract [en]

Glycerol is a renewable chemical that has become widely available and inexpensive owing to the increased production of biodiesel. Noble metal materials are effective catalysts for the production of hydrogen and value-added products through the electrooxidation of glycerol. In this study, we developed three platinum systems with distinct pore mesostructures, e.g., hierarchical pores (HP), cubic pores (CP) and linear pores (LP), all with high electrochemically active surface area (ECSA). The ECSA-normalized GEOR catalytic activity of the systems follows HPC > LPC > CPC > commercial Pt/C. Regarding the oxidation products, we observe glyceric acid as the main three-carbon product (C3), with oxalic acids as the main two-carbon oxidation product. DFT-based theoretical calculations support the glyceraldehyde route going through tartronic acid towards oxalic acid and also help in understanding why the dihydroxyacetone (DHA) route is active despite the absence of DHA amongst the observed oxidation products.

Place, publisher, year, edition, pages
Royal Society of Chemistry (RSC) , 2023. Vol. 11, no 31, p. 16570-16577
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Physical Chemistry
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URN: urn:nbn:se:kth:diva-338529DOI: 10.1039/d3ta01738aISI: 001022934800001Scopus ID: 2-s2.0-85165460368OAI: oai:DiVA.org:kth-338529DiVA, id: diva2:1811771
Note

QC 20231114

Available from: 2023-11-14 Created: 2023-11-14 Last updated: 2024-03-15Bibliographically approved

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White, JaiCornell, Ann M.Salazar-Alvarez, German

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