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Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis
For decades it has been debated whether the conversion of synthesis gas to methanol over copper catalysts is sensitive or insensitive to the structure of the copper surface. Here we have systematically investigated the effect of the copper particle size in the range where changes in surface structur...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476790/ https://www.ncbi.nlm.nih.gov/pubmed/27703166 http://dx.doi.org/10.1038/ncomms13057 |
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author | van den Berg, Roy Prieto, Gonzalo Korpershoek, Gerda van der Wal, Lars I. van Bunningen, Arnoldus J. Lægsgaard-Jørgensen, Susanne de Jongh, Petra E. de Jong, Krijn P. |
author_facet | van den Berg, Roy Prieto, Gonzalo Korpershoek, Gerda van der Wal, Lars I. van Bunningen, Arnoldus J. Lægsgaard-Jørgensen, Susanne de Jongh, Petra E. de Jong, Krijn P. |
author_sort | van den Berg, Roy |
collection | PubMed |
description | For decades it has been debated whether the conversion of synthesis gas to methanol over copper catalysts is sensitive or insensitive to the structure of the copper surface. Here we have systematically investigated the effect of the copper particle size in the range where changes in surface structure occur, that is, below 10 nm, for catalysts with and without zinc promotor at industrially relevant conditions for methanol synthesis. Regardless of the presence or absence of a zinc promotor in the form of zinc oxide or zinc silicate, the surface-specific activity decreases significantly for copper particles smaller than 8 nm, thus revealing structure sensitivity. In view of recent theoretical studies we propose that the methanol synthesis reaction takes place at copper surface sites with a unique configuration of atoms such as step-edge sites, which smaller particles cannot accommodate. |
format | Online Article Text |
id | pubmed-5476790 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-54767902017-07-03 Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis van den Berg, Roy Prieto, Gonzalo Korpershoek, Gerda van der Wal, Lars I. van Bunningen, Arnoldus J. Lægsgaard-Jørgensen, Susanne de Jongh, Petra E. de Jong, Krijn P. Nat Commun Article For decades it has been debated whether the conversion of synthesis gas to methanol over copper catalysts is sensitive or insensitive to the structure of the copper surface. Here we have systematically investigated the effect of the copper particle size in the range where changes in surface structure occur, that is, below 10 nm, for catalysts with and without zinc promotor at industrially relevant conditions for methanol synthesis. Regardless of the presence or absence of a zinc promotor in the form of zinc oxide or zinc silicate, the surface-specific activity decreases significantly for copper particles smaller than 8 nm, thus revealing structure sensitivity. In view of recent theoretical studies we propose that the methanol synthesis reaction takes place at copper surface sites with a unique configuration of atoms such as step-edge sites, which smaller particles cannot accommodate. Nature Publishing Group 2016-10-05 /pmc/articles/PMC5476790/ /pubmed/27703166 http://dx.doi.org/10.1038/ncomms13057 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article van den Berg, Roy Prieto, Gonzalo Korpershoek, Gerda van der Wal, Lars I. van Bunningen, Arnoldus J. Lægsgaard-Jørgensen, Susanne de Jongh, Petra E. de Jong, Krijn P. Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis |
title | Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis |
title_full | Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis |
title_fullStr | Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis |
title_full_unstemmed | Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis |
title_short | Structure sensitivity of Cu and CuZn catalysts relevant to industrial methanol synthesis |
title_sort | structure sensitivity of cu and cuzn catalysts relevant to industrial methanol synthesis |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476790/ https://www.ncbi.nlm.nih.gov/pubmed/27703166 http://dx.doi.org/10.1038/ncomms13057 |
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