Outstanding Activity and Selectivity of Controlled Size Pt Nanoparticles Over WO₃ Nanowires in Ethanol Decomposition Reaction

Mária Szabó, Gyula Halasi, András Sápi, Koppány L. Juhász, János Kiss, Á. Kukovecz, Z. Kónya

Research output: Contribution to journalArticle

Abstract

Pt nanoparticles with controlled size of 1.5 and 6.5 nm were anchored onto the surface of WO₃ nanowires (WO₃NW) as well as on MCF-17 silica. In the case of WO₃NW and MCF-17 supported nanoparticles, 1.5 nm Pt nanoparticles were more active in ethanol decomposition reaction at 533 K. 6.5 nm Pt/WO₃NW catalyst showed ~6 times higher activity compared to MCF-17 supported 6.5 nm Pt nanoparticles. While MCF-17 supported catalysts produced hydrogen, methane, carbon-monoxide and acetaldehyde, the tungsten-oxide supported Pt nanoparticles produced a huge amount of acetone as well as ethene with a high acetaldehyde selectivity besides H₂, CH₄ and CO. The hydrogen formation was significantly higher when the Pt size was 1.5 nm. The metallic nanoparticles, the acid sites and the oxidized centers of support play important role in the formation of decomposition products of ethanol.

LanguageEnglish
Pages478-483
Number of pages6
JournalJournal of nanoscience and nanotechnology
Volume19
Issue number1
DOIs
Publication statusPublished - Jan 1 2019

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Nanowires
Nanoparticles
Ethanol
Acetaldehyde
Carbon Monoxide
Hydrogen
Metal Nanoparticles
Methane
Acetone
Silicon Dioxide
Acids

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Outstanding Activity and Selectivity of Controlled Size Pt Nanoparticles Over WO₃ Nanowires in Ethanol Decomposition Reaction. / Szabó, Mária; Halasi, Gyula; Sápi, András; Juhász, Koppány L.; Kiss, János; Kukovecz, Á.; Kónya, Z.

In: Journal of nanoscience and nanotechnology, Vol. 19, No. 1, 01.01.2019, p. 478-483.

Research output: Contribution to journalArticle

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AU - Halasi, Gyula

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AU - Juhász, Koppány L.

AU - Kiss, János

AU - Kukovecz, Á.

AU - Kónya, Z.

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AB - Pt nanoparticles with controlled size of 1.5 and 6.5 nm were anchored onto the surface of WO₃ nanowires (WO₃NW) as well as on MCF-17 silica. In the case of WO₃NW and MCF-17 supported nanoparticles, 1.5 nm Pt nanoparticles were more active in ethanol decomposition reaction at 533 K. 6.5 nm Pt/WO₃NW catalyst showed ~6 times higher activity compared to MCF-17 supported 6.5 nm Pt nanoparticles. While MCF-17 supported catalysts produced hydrogen, methane, carbon-monoxide and acetaldehyde, the tungsten-oxide supported Pt nanoparticles produced a huge amount of acetone as well as ethene with a high acetaldehyde selectivity besides H₂, CH₄ and CO. The hydrogen formation was significantly higher when the Pt size was 1.5 nm. The metallic nanoparticles, the acid sites and the oxidized centers of support play important role in the formation of decomposition products of ethanol.

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