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dc.contributor.authorHu, Z
dc.contributor.authorMahin, J
dc.contributor.authorTorrente-Murciano, L
dc.date.accessioned2020-02-22T00:31:25Z
dc.date.available2020-02-22T00:31:25Z
dc.date.issued2019
dc.identifier.issn0360-3199
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/302582
dc.description.abstractAmmonia is regarded as a safe hydrogen energy carrier due to its high hydrogen content and narrow flammable range. Herein, we report a novel metal-organic framework (MOF) templated approach to synthesize highly active catalysts for the hydrogen production from ammonia. Calcination of ruthenium-impregnated UiO-66(Zr)-NH2 leads to formation of small ruthenium nanoparticles (<3 nm) with a strong interaction with the resulting mesoporous zirconia support. These catalysts present a turnover frequency considerably higher than Ru/CNTs catalysts, defying the established believe of 3–5 nm as optimum Ru size for this reaction. Moreover, cesium promoter acts as an electronic modifier of Ru and also as a molecular spacer enhancing the stability under reaction conditions. Despite the exciting potential of this approach, the collapse of MOF framework structures during the calcination process limits the accessibility with an estimated ~16% of the ruthenium accessible, underestimating the actual turnover frequency (TOF) values.
dc.publisherElsevier BV
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleA MOF-templated approach for designing ruthenium–cesium catalysts for hydrogen generation from ammonia
dc.typeArticle
prism.endingPage30118
prism.issueIdentifier57
prism.publicationDate2019
prism.publicationNameInternational Journal of Hydrogen Energy
prism.startingPage30108
prism.volume44
dc.identifier.doi10.17863/CAM.49650
dcterms.dateAccepted2019-09-21
rioxxterms.versionofrecord10.1016/j.ijhydene.2019.09.174
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-11-15
dc.contributor.orcidHu, Z [0000-0003-1916-6484]
dc.identifier.eissn1879-3487
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/L020432/2)
cam.issuedOnline2019-10-24
cam.orpheus.successTue Mar 31 10:35:39 BST 2020 - Embargo updated
rioxxterms.freetoread.startdate2020-11-15


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial-NoDerivatives 4.0 International