Effect of Particle Restructuring During Reduction Processes Over Polydopamine-Supported Pd Nanoparticles

Tamás Gazdag, Ádám Baróthi, Koppány Levente Juhász, Attila Kunfi, P. Németh, András Sápi, Á. Kukovecz, Z. Kónya, Kornél Szőori, Gábor London

Research output: Contribution to journalArticle

Abstract

The effect of catalyst restructuring on the polydopamine-supported Pd catalyzed transfer hydrogenation of ethyl 4-nitrobenzoate and the catalytic hydrogenation of (E)-2-methyl-2-butenoic acid is reported. Transmission electron microscopy investigation of different catalyst pre-treatment and reaction conditions revealed high catalytic activity in both reactions unless drastic aggregation of the active metal occurred. In the transfer hydrogenation reaction aggregation was primarily dependent on the H-source used, while in the catalytic hydrogenation additives in combination with the reductive environment led to extensive Pd aggregation and thus decreased catalytic activity. The enantioselective hydrogenation of (E)-2-methyl-2-butenoic acid showed increased enantioselectivity and decreased conversion with increased particle size.

LanguageEnglish
Pages484-491
Number of pages8
JournalJournal of nanoscience and nanotechnology
Volume19
Issue number1
DOIs
Publication statusPublished - Jan 1 2019

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Hydrogenation
Nanoparticles
Crotonates
Nitrobenzoates
Transmission Electron Microscopy
Particle Size
Metals
polydopamine

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Effect of Particle Restructuring During Reduction Processes Over Polydopamine-Supported Pd Nanoparticles. / Gazdag, Tamás; Baróthi, Ádám; Juhász, Koppány Levente; Kunfi, Attila; Németh, P.; Sápi, András; Kukovecz, Á.; Kónya, Z.; Szőori, Kornél; London, Gábor.

In: Journal of nanoscience and nanotechnology, Vol. 19, No. 1, 01.01.2019, p. 484-491.

Research output: Contribution to journalArticle

Gazdag, Tamás ; Baróthi, Ádám ; Juhász, Koppány Levente ; Kunfi, Attila ; Németh, P. ; Sápi, András ; Kukovecz, Á. ; Kónya, Z. ; Szőori, Kornél ; London, Gábor. / Effect of Particle Restructuring During Reduction Processes Over Polydopamine-Supported Pd Nanoparticles. In: Journal of nanoscience and nanotechnology. 2019 ; Vol. 19, No. 1. pp. 484-491.
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