Adsorption properties of M-UiO-66 (M = Zr(<sc>iv</sc>); Hf(<sc>iv</sc>) or Ce(<sc>iv</sc>)) with BDC or PDC linker

Simple item page
dc.contributor.authorGonzalez, Diego
dc.contributor.authorPazo-Carballo, Cesar
dc.contributor.authorCamu, Esteban
dc.contributor.authorHidalgo-Rosa, Yoan
dc.contributor.authorZarate, Ximena
dc.contributor.authorEscalona, Nestor
dc.contributor.authorSchott, Eduardo
dc.date.accessioned2025-01-20T16:16:34Z
dc.date.available2025-01-20T16:16:34Z
dc.date.issued2024
dc.description.abstractThe increasing CO2 emissions and their direct impact on climate change due to the greenhouse effect are environmental issues that must be solved as soon as possible. Metal-organic frameworks (MOFs) are one class of crystalline adsorbent materials that are thought to have enormous potential in CO2 capture applications. In this research, the effect of changing the metal center between Zr(iv), Ce(iv), and Hf(iv), and the linker between BDC and PDC has been fully studied. Thus, the six UiO-66 isoreticular derivatives have been synthesized and characterized by FTIR, PXRD, TGA, and N2 adsorption. We also report the BET surface area, CO2 adsorption capacities, kinetics, and the adsorption isosteric heat (Q(st)) of the UiO-66 derivatives mentioned family. The CO2 adsorption kinetics were evaluated using pseudo-first order, pseudo-second order, Avrami's kinetic models, and the rate-limiting step with Boyd's film diffusion, interparticle diffusion, and intraparticle diffusion models. The isosteric heats of CO2 adsorption using various MOFs are in the range 20-65 kJ mol(-1) observing differences in adsorption capacities between 1.15 and 4.72 mmol g(-1) at different temperatures due to the electrostatic interactions between CO2 and extra-framework metal ions. The isosteric heat of adsorption calculation in this report, which accounts for the unexpectedly high heat released from Zr-UiO-66-PDC, is finally represented as an increase in the interaction of CO2 with the PDC linker and an increase in Q(st) with defects.
dc.fuente.origenWOS
dc.identifier.doi10.1039/d4dt00941j
dc.identifier.eissn1477-9234
dc.identifier.issn1477-9226
dc.identifier.urihttps://doi.org/10.1039/d4dt00941j
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90554
dc.identifier.wosidWOS:001239632600001
dc.issue.numero25
dc.language.isoen
dc.pagina.final10498
dc.pagina.inicio10486
dc.revistaDalton transactions
dc.rightsacceso restringido
dc.titleAdsorption properties of M-UiO-66 (M = Zr(<sc>iv</sc>); Hf(<sc>iv</sc>) or Ce(<sc>iv</sc>)) with BDC or PDC linker
dc.typeartículo
dc.volumen53
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas