000062842 001__ 62842
000062842 005__ 20190709135523.0
000062842 0247_ $$2doi$$a10.1039/C6SC02411D
000062842 0248_ $$2sideral$$a101458
000062842 037__ $$aART-2017-101458
000062842 041__ $$aeng
000062842 100__ $$aCacho Bailo, Fernando
000062842 245__ $$aOn the molecular mechanisms for the H2/CO2 separation performance of zeolite imidazolate framework two-layered membranes
000062842 260__ $$c2017
000062842 5060_ $$aAccess copy available to the general public$$fUnrestricted
000062842 5203_ $$aDouble-layered zeolitic imidazolate framework (ZIF) membranes were fabricated inside polyimide P84 hollow fibers by a step-synthesis conducted by microfluidic technology and applied to pre-combustion gas separation. Our hypothesis, based on the information provided by a combination of molecular simulation and experiments, is that a CO2 adsorption reduction on the surface of the ZIF-9 would enhance the molecular sieving effect of this ZIF-9 layer and therefore the selectivity in the H2/CO2 mixture separation of the entire membrane. This reduction would be achieved by means of a less-CO2-adsorptive methylimidazolate-based ZIF-67 or ZIF-8 layer coating the ZIF-9. ZIF-8/ZIF-9 and ZIF-67/ZIF-9 double-layered membranes were prepared and characterized by XRD, FTIR, SEM, FIB, TEM and EDS. This unprecedented strategy led to a H2/CO2 separation selectivity of 9.6 together with a 250 GPU H2 permeance at 150 °C, showing a significant improvement with respect to the pure ZIF-9 membrane. Double-layered membranes also showed higher apparent CO2 activation energies than single-layered membranes, attributable to a diminished adsorption.
000062842 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2013-40566-R$$9info:eu-repo/grantAgreement/EC/FP7/321642/EU/Development of a microfluidic platform to produce nanomaterials and assessment on new nanotechnology applications/PLATFORM2NANO$$9info:eu-repo/grantAgreement/EC/FP7/279520/EU/Towards more efficient materials for technological processes/RASPA$$9info:eu-repo/grantAgreement/ES/DGA/T05
000062842 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000062842 590__ $$a9.063$$b2017
000062842 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b18 / 171 = 0.105$$c2017$$dQ1$$eT1
000062842 592__ $$a4.508$$b2017
000062842 593__ $$aChemistry (miscellaneous)$$c2017$$dQ1
000062842 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000062842 700__ $$aMatito-Martos, Ismael
000062842 700__ $$aPérez-Carbajo, Julio
000062842 700__ $$aEtxeberría-Benavides, Miren
000062842 700__ $$aKarvan, Oguz
000062842 700__ $$aSebastián, Víctor
000062842 700__ $$aCalero, Sofía
000062842 700__ $$aTéllez, Carlos
000062842 700__ $$aCoronas, Joaquín
000062842 773__ $$g8 (2017), 325-333$$pChem. sci.$$tCHEMICAL SCIENCE$$x2041-6520
000062842 8564_ $$s1293477$$uhttps://zaguan.unizar.es/record/62842/files/texto_completo.pdf$$yVersión publicada
000062842 8564_ $$s113388$$uhttps://zaguan.unizar.es/record/62842/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000062842 909CO $$ooai:zaguan.unizar.es:62842$$particulos$$pdriver
000062842 951__ $$a2019-07-09-11:58:42
000062842 980__ $$aARTICLE