Vis enkel innførsel

dc.contributor.authorKirste, Karsten Granlund
dc.contributor.authorLaassiri, Said
dc.contributor.authorHu, Zhigang
dc.contributor.authorStoian, Dragos
dc.contributor.authorTorrente-Murciano, Laura
dc.contributor.authorHargreaves, Justin S. J.
dc.contributor.authorMathisen, Karina
dc.description.abstractThe 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.rightsNavngivelse 4.0 Internasjonal*
dc.titleXAS investigation of silica aerogel supported cobalt rhenium catalysts for ammonia decompositionen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalPhysical Chemistry, Chemical Physics - PCCPen_US
dc.description.localcodeThis article is licensed under a Creative Commons Attribution 3.0 Unported Licence. DOI: 10.1039/d0cp00558d. This journal is © the Owner Societies 2020en_US

Tilhørende fil(er)


Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse 4.0 Internasjonal