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Publikācija: Au Supported TiO2-Nanofibers as Novel Catalysts for Glycerol Oxidation

Publication Type Full-text conference paper published in conference proceedings indexed in SCOPUS or WOS database
Funding for basic activity National Research Programme
Defending: ,
Publication language English (en)
Title in original language Au Supported TiO2-Nanofibers as Novel Catalysts for Glycerol Oxidation
Field of research 1. Natural sciences
Sub-field of research 1.4 Chemical sciences
Research platform None
Authors Svetlana Čornaja
Reinis Drunka
Konstantīns Dubencovs
Svetlana Žižkuna
Dzidra Jankoviča
Janis Kunakovs
Aija Krūmiņa
Elīna Sīle
Keywords Catalysis, Glycerol, Gold, Nanofibers, Oxidation, Titanium Oxide (TiO2)
Abstract Composites of Au supported on the TiO2-nanofibers (Au/NF-TiO2) were synthesized and tested in glycerol oxidation processes. TiO2-nanofibers were prepared by a microwave-assisted hydrothermal synthesis method. Chemical deposition method was used for nanofibers modification with Au nanoparticles. Oxidation of aqueous glycerol solutions by molecular oxygen in the presence of Au/NF-TiO2 nanocomposites was performed. It was found that Au/NF-TiO2 composites are catalytically active in alkaline glycerol water solutions. The main product of glycerol catalytic oxidation was glyceric acid, by-products were – tartronic, lactic, glycolic, oxalic, acetic and formic acid. It was shown that Au/NF-TiO2 catalysts’ activity and selectivity depend on Au weight loading, glycerol/Au molar ratio, oxygen pressure and NaOH initial concentration. The best result was achieved using the 0.5 wt%Au/NF-TiO2 catalyst: selectivity by glyceric acid was 76% with glycerol conversion 100%.
DOI: 10.4028/www.scientific.net/KEM.762.294
Hyperlink: https://www.scientific.net/KEM.762.294 
Reference Čornaja, S., Drunka, R., Dubencovs, K., Žižkuna, S., Jankoviča, D., Kunakovs, J., Krūmiņa, A., Sīle, E. Au Supported TiO2-Nanofibers as Novel Catalysts for Glycerol Oxidation. In: Key Engineering Materials, Latvia, Rīga, 20-21 October, 2017. http://www.scientific.net: --, 2018, pp.294-299. ISBN 978-3-0357-1238-4. ISSN 1013-9826. e-ISSN 1662-9795. Available from: doi:10.4028/www.scientific.net/KEM.762.294
Additional information Citation count:
ID 26555