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The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts
Mg(OH)(2)‐ and Mg(OH)(2)‐containing materials can provide excellent performance as supports for AuPd nanoparticles for the oxidation of glycerol in the absence of base, which is considered to be a result of additional basic sites on the surface of the support. However, its influence on the reaction...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5969100/ https://www.ncbi.nlm.nih.gov/pubmed/29266447 http://dx.doi.org/10.1002/chem.201704151 |
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author | Fu, Jile He, Qian Miedziak, Peter J. Brett, Gemma L. Huang, Xiaoyang Pattisson, Samuel Douthwaite, Mark Hutchings, Graham J. |
author_facet | Fu, Jile He, Qian Miedziak, Peter J. Brett, Gemma L. Huang, Xiaoyang Pattisson, Samuel Douthwaite, Mark Hutchings, Graham J. |
author_sort | Fu, Jile |
collection | PubMed |
description | Mg(OH)(2)‐ and Mg(OH)(2)‐containing materials can provide excellent performance as supports for AuPd nanoparticles for the oxidation of glycerol in the absence of base, which is considered to be a result of additional basic sites on the surface of the support. However, its influence on the reaction solution is not generally discussed. In this paper, we examine the relationship between the basic Mg(OH)(2) support and AuPd nanoparticles in detail using four types of catalyst. For these reactions, the physical interaction between Mg(OH)(2) and AuPd was adjusted. It was found that the activity of the AuPd nanoparticles increased with the amount of Mg(OH)(2) added under base‐free conditions, regardless of its interaction with the noble metals. In order to investigate how Mg(OH)(2) affected the glycerol oxidation, detailed information about the performance of AuPd/Mg(OH)(2), physically mixed (AuPd/C+Mg(OH)(2)) and (AuPd/C+NaHCO(3)) was obtained and compared. Furthermore, NaOH and Mg(OH)(2) were added during the reaction using AuPd/C. All these results indicate that the distinctive and outstanding performance of Mg(OH)(2) supported catalysts in base‐free condition is in fact directly related to its ability to affect the pH during the reaction and as such, assists with the initial activation of the primary alcohol, which is considered to be the rate determining step in the reaction. |
format | Online Article Text |
id | pubmed-5969100 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-59691002018-05-30 The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts Fu, Jile He, Qian Miedziak, Peter J. Brett, Gemma L. Huang, Xiaoyang Pattisson, Samuel Douthwaite, Mark Hutchings, Graham J. Chemistry Full Papers Mg(OH)(2)‐ and Mg(OH)(2)‐containing materials can provide excellent performance as supports for AuPd nanoparticles for the oxidation of glycerol in the absence of base, which is considered to be a result of additional basic sites on the surface of the support. However, its influence on the reaction solution is not generally discussed. In this paper, we examine the relationship between the basic Mg(OH)(2) support and AuPd nanoparticles in detail using four types of catalyst. For these reactions, the physical interaction between Mg(OH)(2) and AuPd was adjusted. It was found that the activity of the AuPd nanoparticles increased with the amount of Mg(OH)(2) added under base‐free conditions, regardless of its interaction with the noble metals. In order to investigate how Mg(OH)(2) affected the glycerol oxidation, detailed information about the performance of AuPd/Mg(OH)(2), physically mixed (AuPd/C+Mg(OH)(2)) and (AuPd/C+NaHCO(3)) was obtained and compared. Furthermore, NaOH and Mg(OH)(2) were added during the reaction using AuPd/C. All these results indicate that the distinctive and outstanding performance of Mg(OH)(2) supported catalysts in base‐free condition is in fact directly related to its ability to affect the pH during the reaction and as such, assists with the initial activation of the primary alcohol, which is considered to be the rate determining step in the reaction. John Wiley and Sons Inc. 2018-01-24 2018-02-16 /pmc/articles/PMC5969100/ /pubmed/29266447 http://dx.doi.org/10.1002/chem.201704151 Text en © 2018 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Full Papers Fu, Jile He, Qian Miedziak, Peter J. Brett, Gemma L. Huang, Xiaoyang Pattisson, Samuel Douthwaite, Mark Hutchings, Graham J. The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts |
title | The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts |
title_full | The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts |
title_fullStr | The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts |
title_full_unstemmed | The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts |
title_short | The Role of Mg(OH)(2) in the So‐Called “Base‐Free” Oxidation of Glycerol with AuPd Catalysts |
title_sort | role of mg(oh)(2) in the so‐called “base‐free” oxidation of glycerol with aupd catalysts |
topic | Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5969100/ https://www.ncbi.nlm.nih.gov/pubmed/29266447 http://dx.doi.org/10.1002/chem.201704151 |
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