Beyond the H2/CO2 upper bound: one-step crystallization and separation of nano-sized ZIF-11 by centrifugation and its application in mixed matrix membranes

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/45959
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dc.contributorMateriales Carbonosos y Medio Ambientees
dc.contributor.authorSánchez-Laínez, Javier-
dc.contributor.authorZornoza, Beatriz-
dc.contributor.authorMayoral, Álvaro-
dc.contributor.authorBerenguer-Murcia, Ángel-
dc.contributor.authorCazorla-Amorós, Diego-
dc.contributor.authorTéllez, Carlos-
dc.contributor.authorCoronas, Joaquín-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Inorgánicaes
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Materialeses
dc.date.accessioned2015-03-20T12:13:11Z-
dc.date.available2015-03-20T12:13:11Z-
dc.date.issued2015-02-17-
dc.identifier.citationJournal of Materials Chemistry A. 2015, 3: 6549-6556. doi:10.1039/C4TA06820Ces
dc.identifier.issn2050-7488 (Print)-
dc.identifier.issn2050-7496 (Online)-
dc.identifier.urihttp://hdl.handle.net/10045/45959-
dc.description.abstractThe synthesis of nano-sized ZIF-11 with an average size of 36 ± 6 nm is reported. This material has been named nano-zeolitic imidazolate framework-11 (nZIF-11). It has the same chemical composition and thermal stability and analogous H2 and CO2 adsorption properties to the conventional microcrystalline ZIF-11 (i.e. 1.9 ± 0.9 μm). nZIF-11 has been obtained following the centrifugation route, typically used for solid separation, as a fast new technique (pioneering for MOFs) for obtaining nanomaterials where the temperature, time and rotation speed can easily be controlled. Compared to the traditional synthesis consisting of stirring + separation, the reaction time was lowered from several hours to a few minutes when using this centrifugation synthesis technique. Employing the same reaction time (2, 5 or 10 min), micro-sized ZIF-11 was obtained using the traditional synthesis while nano-scale ZIF-11 was achieved only by using centrifugation synthesis. The small particle size obtained for nZIF-11 allowed the use of the wet MOF sample as a colloidal suspension stable in chloroform. This helped to prepare mixed matrix membranes (MMMs) by direct addition of the membrane polymer (polyimide Matrimid®) to the colloidal suspension, avoiding particle agglomeration resulting from drying. The MMMs were tested for H2/CO2 separation, improving the pure polymer membrane performance, with permeation values of 95.9 Barrer of H2 and a H2/CO2 separation selectivity of 4.4 at 35 °C. When measured at 200 °C, these values increased to 535 Barrer and 9.1.es
dc.description.sponsorshipFinancial support from the Spanish MINECO (MAT2013-40566-R, CTQ2012-31762, and RyC-2009-03913), the Aragón Government and the ESF is gratefully acknowledged. In addition, research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007–2013) under grant agreement no. 608490, project M4CO2. Finally, the use of the Servicio General de Apoyo a la Investigación-SAI (Universidad de Zaragoza) is acknowledged.es
dc.languageenges
dc.publisherRoyal Society of Chemistryes
dc.rights© Royal Society of Chemistry 2015es
dc.subjectSynthesises
dc.subjectNano-sized ZIF-11es
dc.subjectCentrifugationes
dc.subjectMixed matrix membraneses
dc.subjectH2/CO2 separationes
dc.subject.otherQuímica Inorgánicaes
dc.titleBeyond the H2/CO2 upper bound: one-step crystallization and separation of nano-sized ZIF-11 by centrifugation and its application in mixed matrix membraneses
dc.typeinfo:eu-repo/semantics/articlees
dc.peerreviewedsies
dc.identifier.doi10.1039/C4TA06820C-
dc.relation.publisherversionhttp://dx.doi.org/10.1039/C4TA06820Ces
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/608490es
Appears in Collections:INV - MCMA - Artículos de Revistas

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