dc.contributor.author | Kirste, Karsten Granlund | |
dc.contributor.author | Laassiri, Said | |
dc.contributor.author | Hu, Zhigang | |
dc.contributor.author | Stoian, Dragos | |
dc.contributor.author | Torrente-Murciano, Laura | |
dc.contributor.author | Hargreaves, Justin S. J. | |
dc.contributor.author | Mathisen, Karina | |
dc.date.accessioned | 2020-08-19T07:38:45Z | |
dc.date.available | 2020-08-19T07:38:45Z | |
dc.date.created | 2020-08-18T12:23:48Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 1463-9076 | |
dc.identifier.uri | https://hdl.handle.net/11250/2672904 | |
dc.description.abstract | The implementation of ammonia as a hydrogen vector relies on the development of active catalysts to
release hydrogen on-demand at low temperatures. As an alternative to ruthenium-based catalysts,
herein we report the high activity of silica aerogel supported cobalt rhenium catalysts. XANES/EXAFS
studies undertaken at reaction conditions in the presence of the ammonia feed reveal that the cobalt
and rhenium components of the catalyst which had been pre-reduced are initially re-oxidised prior
to their subsequent reduction to metallic and bimetallic species before catalytic activity is observed.
A synergistic effect is apparent in which this re-reduction step occurs at considerably lower temperatures
than for the corresponding monometallic counterpart materials. The rate of hydrogen production via
ammonia decomposition was determined to be 0.007 molH2 gcat1 h1 at 450 1C. The current study
indicates that reduced Co species are crucial for the development of catalytic activity. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | XAS investigation of silica aerogel supported cobalt rhenium catalysts for ammonia decomposition | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.journal | Physical Chemistry, Chemical Physics - PCCP | en_US |
dc.identifier.doi | 10.1039/D0CP00558D | |
dc.identifier.cristin | 1818337 | |
dc.description.localcode | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. DOI: 10.1039/d0cp00558d. This journal is © the Owner Societies 2020 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |