Effect of unimodality and bimodality of Pd nanoparticles on the catalytic activity of Pd/SiO2 in the removal of diclofenac from water

Emil Kowalewski; Monika Asztemborska; Magdalena Bonarowska; Krzysztof Matus; Anna Śrębowata

doi:10.1016/j.catcom.2020.106056

Effect of unimodality and bimodality of Pd nanoparticles on the catalytic activity of Pd/SiO₂ in the removal of diclofenac from water

Emil Kowalewski
, Monika Asztemborska
, Magdalena Bonarowska
, Krzysztof Matus
, Anna Śrębowata

Laboratorium Badania Materiałów (RMT/RMT L1)

Polish Academy of Sciences

Wyniki badań: Wkład do czasopisma › Artykuł › recenzja

4 Cytowania z bazy Scopus

Abstrakt

In this work, we investigated the catalytic performance of uni- and bimodal Pd/SiO₂ catalysts in the aqueous phase hydrodechlorination (HDC) of diclofenac – a very popular nonsteroidal anti-inflammatory drug. Unimodality and bimodality was confirmed by temperature-programmed hydride decomposition (TPHD) and TEM. The highest activity and 100% efficiency in batch and flow mode were observed for bimodal Pd NPs. This outstanding efficiency could be attributed to the close coexistence of small and large metal nanoparticles with different affinity to hydrogen and chloroorganic compound. The obtained results encourage discussion on the necessity to strive for perfect unimodal catalysts for the HDC processes.

Język oryginału	angielski
Numer artykułu	106056
Czasopismo	Catalysis Communications
Tom	143
Identyfikatory DOI	https://doi.org/10.1016/j.catcom.2020.106056
Status publikacji	Opublikowano - 5 sie 2020

Obszary tematyczne ASJC Scopus

Kataliza
Chemia ogólna
Chemia i technologia procesów

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10.1016/j.catcom.2020.106056

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Cytowanie

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title = "Effect of unimodality and bimodality of Pd nanoparticles on the catalytic activity of Pd/SiO2 in the removal of diclofenac from water",

abstract = "In this work, we investigated the catalytic performance of uni- and bimodal Pd/SiO2 catalysts in the aqueous phase hydrodechlorination (HDC) of diclofenac {\textendash} a very popular nonsteroidal anti-inflammatory drug. Unimodality and bimodality was confirmed by temperature-programmed hydride decomposition (TPHD) and TEM. The highest activity and 100\% efficiency in batch and flow mode were observed for bimodal Pd NPs. This outstanding efficiency could be attributed to the close coexistence of small and large metal nanoparticles with different affinity to hydrogen and chloroorganic compound. The obtained results encourage discussion on the necessity to strive for perfect unimodal catalysts for the HDC processes.",

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author = "Emil Kowalewski and Monika Asztemborska and Magdalena Bonarowska and Krzysztof Matus and Anna {\'S}r{\c e}bowata",

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AU - Kowalewski, Emil

AU - Asztemborska, Monika

AU - Bonarowska, Magdalena

AU - Matus, Krzysztof

AU - Śrębowata, Anna

PY - 2020/8/5

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AB - In this work, we investigated the catalytic performance of uni- and bimodal Pd/SiO2 catalysts in the aqueous phase hydrodechlorination (HDC) of diclofenac – a very popular nonsteroidal anti-inflammatory drug. Unimodality and bimodality was confirmed by temperature-programmed hydride decomposition (TPHD) and TEM. The highest activity and 100% efficiency in batch and flow mode were observed for bimodal Pd NPs. This outstanding efficiency could be attributed to the close coexistence of small and large metal nanoparticles with different affinity to hydrogen and chloroorganic compound. The obtained results encourage discussion on the necessity to strive for perfect unimodal catalysts for the HDC processes.

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KW - Bimodality

KW - Flow hydrotreatment

KW - Palladium

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