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Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity

This work is addressing the selective hydrogenation of alkynols over hybrid catalysts containing Pd-nanoparticles, within newly synthesized hyper-cross-linked polystyrenes (HPS). Alkynols containing C(5), C(10), and C(20) with a terminal triple bond, which are structural analogues or direct semi-pro...

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Detalles Bibliográficos
Autores principales: Nikoshvili, Linda Z., Popov, Alexander Y., Bykov, Alexey V., Sidorov, Alexander I., Kiwi-Minsker, Lioubov
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9228706/
https://www.ncbi.nlm.nih.gov/pubmed/35744966
http://dx.doi.org/10.3390/molecules27123842
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author Nikoshvili, Linda Z.
Popov, Alexander Y.
Bykov, Alexey V.
Sidorov, Alexander I.
Kiwi-Minsker, Lioubov
author_facet Nikoshvili, Linda Z.
Popov, Alexander Y.
Bykov, Alexey V.
Sidorov, Alexander I.
Kiwi-Minsker, Lioubov
author_sort Nikoshvili, Linda Z.
collection PubMed
description This work is addressing the selective hydrogenation of alkynols over hybrid catalysts containing Pd-nanoparticles, within newly synthesized hyper-cross-linked polystyrenes (HPS). Alkynols containing C(5), C(10), and C(20) with a terminal triple bond, which are structural analogues or direct semi-products of fragrant substances and fat-soluble vitamins, have been studied. Selective hydrogenation was carried out in a batch mode (ambient hydrogen pressure, at 90 °C, in toluene solvent), using hybrid Pd catalysts with low metal content (less than 0.2 wt.%). The microporous and mesoporous HPS were both synthesized and used as supports in order to address the influence of porosity. Synthesized catalysts were shown to be active and selective: in the case of C(5), hydrogenation selectivity to the target product was more than 95%, at close to complete alkynol conversion. Mesoporous catalysts have shown some advantages in hydrogenation of long-chain alkynols.
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spelling pubmed-92287062022-06-25 Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity Nikoshvili, Linda Z. Popov, Alexander Y. Bykov, Alexey V. Sidorov, Alexander I. Kiwi-Minsker, Lioubov Molecules Article This work is addressing the selective hydrogenation of alkynols over hybrid catalysts containing Pd-nanoparticles, within newly synthesized hyper-cross-linked polystyrenes (HPS). Alkynols containing C(5), C(10), and C(20) with a terminal triple bond, which are structural analogues or direct semi-products of fragrant substances and fat-soluble vitamins, have been studied. Selective hydrogenation was carried out in a batch mode (ambient hydrogen pressure, at 90 °C, in toluene solvent), using hybrid Pd catalysts with low metal content (less than 0.2 wt.%). The microporous and mesoporous HPS were both synthesized and used as supports in order to address the influence of porosity. Synthesized catalysts were shown to be active and selective: in the case of C(5), hydrogenation selectivity to the target product was more than 95%, at close to complete alkynol conversion. Mesoporous catalysts have shown some advantages in hydrogenation of long-chain alkynols. MDPI 2022-06-15 /pmc/articles/PMC9228706/ /pubmed/35744966 http://dx.doi.org/10.3390/molecules27123842 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nikoshvili, Linda Z.
Popov, Alexander Y.
Bykov, Alexey V.
Sidorov, Alexander I.
Kiwi-Minsker, Lioubov
Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity
title Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity
title_full Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity
title_fullStr Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity
title_full_unstemmed Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity
title_short Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity
title_sort hybrid pd-nanoparticles within polymeric network in selective hydrogenation of alkynols: influence of support porosity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9228706/
https://www.ncbi.nlm.nih.gov/pubmed/35744966
http://dx.doi.org/10.3390/molecules27123842
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