Cargando…
Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations
Nanoreactors with hollow structures have attracted great interest in catalysis research due to their void‐confinement effects. However, the challenge in unambiguously unraveling these confinement effects is to decouple them from other factors affecting catalysis. Here, we synthesize a pair of hollow...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7590117/ https://www.ncbi.nlm.nih.gov/pubmed/32588534 http://dx.doi.org/10.1002/anie.202007297 |
_version_ | 1783600734061723648 |
---|---|
author | Dong, Chao Yu, Qun Ye, Run‐Ping Su, Panpan Liu, Jian Wang, Guang‐Hui |
author_facet | Dong, Chao Yu, Qun Ye, Run‐Ping Su, Panpan Liu, Jian Wang, Guang‐Hui |
author_sort | Dong, Chao |
collection | PubMed |
description | Nanoreactors with hollow structures have attracted great interest in catalysis research due to their void‐confinement effects. However, the challenge in unambiguously unraveling these confinement effects is to decouple them from other factors affecting catalysis. Here, we synthesize a pair of hollow carbon sphere (HCS) nanoreactors with presynthesized PdCu nanoparticles encapsulated inside of HCS (PdCu@HCS) and supported outside of HCS (PdCu/HCS), respectively, while keeping other structural features the same. Based on the two comparative nanoreactors, void‐confinement effects in liquid‐phase hydrogenation are investigated in a two‐chamber reactor. It is found that hydrogenations over PdCu@HCS are shape‐selective catalysis, can be accelerated (accumulation of reactants), decelerated (mass transfer limitation), and even inhibited (molecular‐sieving effect); conversion of the intermediate in the void space can be further promoted. Using this principle, a specific imine is selectively produced. This work provides a proof of concept for fundamental catalytic action of the hollow nanoreactors. |
format | Online Article Text |
id | pubmed-7590117 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-75901172020-10-30 Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations Dong, Chao Yu, Qun Ye, Run‐Ping Su, Panpan Liu, Jian Wang, Guang‐Hui Angew Chem Int Ed Engl Communications Nanoreactors with hollow structures have attracted great interest in catalysis research due to their void‐confinement effects. However, the challenge in unambiguously unraveling these confinement effects is to decouple them from other factors affecting catalysis. Here, we synthesize a pair of hollow carbon sphere (HCS) nanoreactors with presynthesized PdCu nanoparticles encapsulated inside of HCS (PdCu@HCS) and supported outside of HCS (PdCu/HCS), respectively, while keeping other structural features the same. Based on the two comparative nanoreactors, void‐confinement effects in liquid‐phase hydrogenation are investigated in a two‐chamber reactor. It is found that hydrogenations over PdCu@HCS are shape‐selective catalysis, can be accelerated (accumulation of reactants), decelerated (mass transfer limitation), and even inhibited (molecular‐sieving effect); conversion of the intermediate in the void space can be further promoted. Using this principle, a specific imine is selectively produced. This work provides a proof of concept for fundamental catalytic action of the hollow nanoreactors. John Wiley and Sons Inc. 2020-08-18 2020-10-12 /pmc/articles/PMC7590117/ /pubmed/32588534 http://dx.doi.org/10.1002/anie.202007297 Text en © 2020 The Authors. Published by Wiley-VCH GmbH 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 | Communications Dong, Chao Yu, Qun Ye, Run‐Ping Su, Panpan Liu, Jian Wang, Guang‐Hui Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations |
title | Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations |
title_full | Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations |
title_fullStr | Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations |
title_full_unstemmed | Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations |
title_short | Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations |
title_sort | hollow carbon sphere nanoreactors loaded with pdcu nanoparticles: void‐confinement effects in liquid‐phase hydrogenations |
topic | Communications |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7590117/ https://www.ncbi.nlm.nih.gov/pubmed/32588534 http://dx.doi.org/10.1002/anie.202007297 |
work_keys_str_mv | AT dongchao hollowcarbonspherenanoreactorsloadedwithpdcunanoparticlesvoidconfinementeffectsinliquidphasehydrogenations AT yuqun hollowcarbonspherenanoreactorsloadedwithpdcunanoparticlesvoidconfinementeffectsinliquidphasehydrogenations AT yerunping hollowcarbonspherenanoreactorsloadedwithpdcunanoparticlesvoidconfinementeffectsinliquidphasehydrogenations AT supanpan hollowcarbonspherenanoreactorsloadedwithpdcunanoparticlesvoidconfinementeffectsinliquidphasehydrogenations AT liujian hollowcarbonspherenanoreactorsloadedwithpdcunanoparticlesvoidconfinementeffectsinliquidphasehydrogenations AT wangguanghui hollowcarbonspherenanoreactorsloadedwithpdcunanoparticlesvoidconfinementeffectsinliquidphasehydrogenations |