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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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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. |
format | Online Article Text |
id | pubmed-9228706 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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