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An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation
The different activity of a 1% Pd/carbon catalyst towards aromatic and aliphatic aldehydes hydrogenation has been explored by (13)C NMR relaxation. The ratio between T1 relaxation times of adsorbed (ads) and free diffusing (bulk) molecules (T1(ads)/T1(bulk)) can be used as an indicator of the relati...
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/PMC8955477/ https://www.ncbi.nlm.nih.gov/pubmed/35335722 http://dx.doi.org/10.3390/nano12060908 |
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author | Stucchi, Marta Vasile, Francesca Cattaneo, Stefano Villa, Alberto Chieregato, Alessandro Vandegehuchte, Bart D. Prati, Laura |
author_facet | Stucchi, Marta Vasile, Francesca Cattaneo, Stefano Villa, Alberto Chieregato, Alessandro Vandegehuchte, Bart D. Prati, Laura |
author_sort | Stucchi, Marta |
collection | PubMed |
description | The different activity of a 1% Pd/carbon catalyst towards aromatic and aliphatic aldehydes hydrogenation has been explored by (13)C NMR relaxation. The ratio between T1 relaxation times of adsorbed (ads) and free diffusing (bulk) molecules (T1(ads)/T1(bulk)) can be used as an indicator of the relative strength of interaction between the reactant and the catalytic surface, where the lower the T1(ads)/T1(bulk), the higher the adsorption strength. It can be seen that 1% Pd/carbon showed a reverse catalytic behaviour towards benzaldehyde and octanal hydrogenation, which can be explained by analysing the T1 relaxation times related to each substrate in the presence of the catalyst. Comparing and correlating the different T1(ads)/T1(bulk) values, we were able to prove that the different catalytic results mainly depend on the contrasting adsorption behaviour of substrates on the catalyst. Moreover, the role of the solvent has been disclosed, as NMR results revealed that the adsorption of the reactants was strongly affected by the choice of solvent, which is revealed to be critical in modulating catalytic activity. As a consequence, T1(ads)/T1(bulk) measurements can provide a guide to the selection of appropriate reaction conditions for improving catalytic activity. |
format | Online Article Text |
id | pubmed-8955477 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-89554772022-03-26 An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation Stucchi, Marta Vasile, Francesca Cattaneo, Stefano Villa, Alberto Chieregato, Alessandro Vandegehuchte, Bart D. Prati, Laura Nanomaterials (Basel) Article The different activity of a 1% Pd/carbon catalyst towards aromatic and aliphatic aldehydes hydrogenation has been explored by (13)C NMR relaxation. The ratio between T1 relaxation times of adsorbed (ads) and free diffusing (bulk) molecules (T1(ads)/T1(bulk)) can be used as an indicator of the relative strength of interaction between the reactant and the catalytic surface, where the lower the T1(ads)/T1(bulk), the higher the adsorption strength. It can be seen that 1% Pd/carbon showed a reverse catalytic behaviour towards benzaldehyde and octanal hydrogenation, which can be explained by analysing the T1 relaxation times related to each substrate in the presence of the catalyst. Comparing and correlating the different T1(ads)/T1(bulk) values, we were able to prove that the different catalytic results mainly depend on the contrasting adsorption behaviour of substrates on the catalyst. Moreover, the role of the solvent has been disclosed, as NMR results revealed that the adsorption of the reactants was strongly affected by the choice of solvent, which is revealed to be critical in modulating catalytic activity. As a consequence, T1(ads)/T1(bulk) measurements can provide a guide to the selection of appropriate reaction conditions for improving catalytic activity. MDPI 2022-03-09 /pmc/articles/PMC8955477/ /pubmed/35335722 http://dx.doi.org/10.3390/nano12060908 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 Stucchi, Marta Vasile, Francesca Cattaneo, Stefano Villa, Alberto Chieregato, Alessandro Vandegehuchte, Bart D. Prati, Laura An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation |
title | An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation |
title_full | An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation |
title_fullStr | An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation |
title_full_unstemmed | An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation |
title_short | An Insight into the Role of Reactant Structure Effect in Pd/C Catalysed Aldehyde Hydrogenation |
title_sort | insight into the role of reactant structure effect in pd/c catalysed aldehyde hydrogenation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8955477/ https://www.ncbi.nlm.nih.gov/pubmed/35335722 http://dx.doi.org/10.3390/nano12060908 |
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