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dc.creatorMilanović, Igor
dc.creatorBiliškov, Nikola
dc.creatorUžarević, Krunoslav
dc.creatorLukin, Stipe
dc.creatorEtter, Martin
dc.creatorHalasz, Ivan
dc.date.accessioned2021-04-13T12:12:18Z
dc.date.available2021-04-13T12:12:18Z
dc.date.issued2021
dc.identifier.issn2168-0485
dc.identifier.urihttps://vinar.vin.bg.ac.rs/handle/123456789/9088
dc.description.abstractMetallic amidoboranes are widely investigated candidates for solid-state hydrogen storage, and much focus shifted recently toward bimetallic amidoboranes. Bimetallic amidoboranes are expected to introduce novel and enhanced physicochemical properties regarding storage and stability. However, these materials are still scarce and mostly grouped around magnesium- or aluminum-containing compounds. We present here a rapid and green mechanochemical solvent-free synthesis of two novel calcium-containing bimetallic amidoboranes, Li2Ca(NH2BH3)4 and Na2Ca(NH2BH3)4, from metal hydrides and ammonia borane. The insight into mechanochemical syntheses is provided by the in situ tandem synchrotron X-ray diffraction and thermal monitoring. The in situ data reveal how the choice of alkali metal hydride governs the course of reactions and their thermal profiles. In situ monitoring of thermal dehydrogenation of these materials is conducted by mass spectrometry and infrared spectroscopy, showing how the course of thermal decomposition varies depending on the structure of the amidoborane, resulting however in the same final products. These new hydrogen-rich bimetallic amidoboranes are structurally characterized by high-resolution powder X-ray diffraction, and they both show potential for hydrogen storage applications: high theoretical gravimetric capacities and low desorption temperatures of hydrogen without the significant presence of harmful gases. We also show how the choice of the milling reactor material can be decisive for the efficiency and overall success of the mechanochemical synthetic procedure, which may impact the design of milling syntheses for other thermally labile chemical systems. © 2021 American Chemical Society.en
dc.language.isoen
dc.relationMinistry of Environment and Energy, the Ministry of Science and Education, the Environmental Protection and Energy Efficiency Fund, and the Croatian Science Foundation under the project "New Materials for Energy Storage"
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45012/RS//
dc.relationCOST Action [CA18112]
dc.relationDESY [I-20181094 EC]
dc.relationCroatian Science Foundation - European Union from the European Social Fund [PZS-2019-02-4129]
dc.rightsrestrictedAccess
dc.sourceACS Sustainable Chemistry & Engineering
dc.subjectHydrogen storageen
dc.subjectBall millingen
dc.subjectReaction monitoringen
dc.subjectReal-time PXRDen
dc.subjectTemperature-dependent IR spectroscopyen
dc.subjectBimetallic amidoboranesen
dc.subjectTPD-MSen
dc.titleMechanochemical Synthesis and Thermal Dehydrogenation of Novel Calcium-Containing Bimetallic Amidoboranesen
dc.typearticleen
dc.rights.licenseARR
dcterms.abstractБилишков, Никола; Милановић, Игор; Еттер, Мартин; Лукин, Стипе; Халасз, Иван; Ужаревић, Крунослав;
dc.rights.holder© 2021 American Chemical Society
dc.citation.volume9
dc.citation.issue5
dc.citation.spage2089
dc.citation.epage2099
dc.identifier.wos000618670600011
dc.identifier.doi10.1021/acssuschemeng.0c06839
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-85100798407


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