Cargando…

Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts

[Image: see text] Supported metal nanoparticle catalysts are commonly obtained through deposition of metal precursors onto the support using incipient wetness impregnation. Typically, empirical relations between metal nanoparticle structure and catalytic performance are inferred from ensemble averag...

Descripción completa

Detalles Bibliográficos
Autores principales: Plessers, Eva, Stassen, Ivo, Sree, Sreeprasanth Pulinthanathu, Janssen, Kris P. F., Yuan, Haifeng, Martens, Johan, Hofkens, Johan, De Vos, Dirk, Roeffaers, Maarten B. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2015
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4640703/
https://www.ncbi.nlm.nih.gov/pubmed/26618052
http://dx.doi.org/10.1021/acscatal.5b02119
_version_ 1782400115618611200
author Plessers, Eva
Stassen, Ivo
Sree, Sreeprasanth Pulinthanathu
Janssen, Kris P. F.
Yuan, Haifeng
Martens, Johan
Hofkens, Johan
De Vos, Dirk
Roeffaers, Maarten B. J.
author_facet Plessers, Eva
Stassen, Ivo
Sree, Sreeprasanth Pulinthanathu
Janssen, Kris P. F.
Yuan, Haifeng
Martens, Johan
Hofkens, Johan
De Vos, Dirk
Roeffaers, Maarten B. J.
author_sort Plessers, Eva
collection PubMed
description [Image: see text] Supported metal nanoparticle catalysts are commonly obtained through deposition of metal precursors onto the support using incipient wetness impregnation. Typically, empirical relations between metal nanoparticle structure and catalytic performance are inferred from ensemble averaged data in combination with high-resolution electron microscopy. This approach clearly underestimates the importance of heterogeneities present in a supported metal catalyst batch. Here we show for the first time how incipient wetness impregnation leads to 10-fold variations in silver loading between individual submillimeter-sized silica support granules. This heterogeneity has a profound impact on the catalytic performance, with 100-fold variations in hydrogenation performance at the same level. In a straightforward fashion, optical microscopy interlinks single support particle level catalytic measurements to structural and compositional information. These detailed correlations reveal the optimal silver loading. A thorough consideration of catalyst heterogeneity and the impact thereof on the catalytic performance is indispensable in the development of catalysts.
format Online
Article
Text
id pubmed-4640703
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-46407032015-11-27 Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts Plessers, Eva Stassen, Ivo Sree, Sreeprasanth Pulinthanathu Janssen, Kris P. F. Yuan, Haifeng Martens, Johan Hofkens, Johan De Vos, Dirk Roeffaers, Maarten B. J. ACS Catal [Image: see text] Supported metal nanoparticle catalysts are commonly obtained through deposition of metal precursors onto the support using incipient wetness impregnation. Typically, empirical relations between metal nanoparticle structure and catalytic performance are inferred from ensemble averaged data in combination with high-resolution electron microscopy. This approach clearly underestimates the importance of heterogeneities present in a supported metal catalyst batch. Here we show for the first time how incipient wetness impregnation leads to 10-fold variations in silver loading between individual submillimeter-sized silica support granules. This heterogeneity has a profound impact on the catalytic performance, with 100-fold variations in hydrogenation performance at the same level. In a straightforward fashion, optical microscopy interlinks single support particle level catalytic measurements to structural and compositional information. These detailed correlations reveal the optimal silver loading. A thorough consideration of catalyst heterogeneity and the impact thereof on the catalytic performance is indispensable in the development of catalysts. American Chemical Society 2015-09-30 2015-11-06 /pmc/articles/PMC4640703/ /pubmed/26618052 http://dx.doi.org/10.1021/acscatal.5b02119 Text en Copyright © 2015 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Plessers, Eva
Stassen, Ivo
Sree, Sreeprasanth Pulinthanathu
Janssen, Kris P. F.
Yuan, Haifeng
Martens, Johan
Hofkens, Johan
De Vos, Dirk
Roeffaers, Maarten B. J.
Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts
title Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts
title_full Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts
title_fullStr Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts
title_full_unstemmed Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts
title_short Resolving Interparticle Heterogeneities in Composition and Hydrogenation Performance between Individual Supported Silver on Silica Catalysts
title_sort resolving interparticle heterogeneities in composition and hydrogenation performance between individual supported silver on silica catalysts
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4640703/
https://www.ncbi.nlm.nih.gov/pubmed/26618052
http://dx.doi.org/10.1021/acscatal.5b02119
work_keys_str_mv AT plesserseva resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT stassenivo resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT sreesreeprasanthpulinthanathu resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT janssenkrispf resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT yuanhaifeng resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT martensjohan resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT hofkensjohan resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT devosdirk resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts
AT roeffaersmaartenbj resolvinginterparticleheterogeneitiesincompositionandhydrogenationperformancebetweenindividualsupportedsilveronsilicacatalysts