New insight of the influence of acidic surface sites of zeolite on the ability to remove gaseous ozone using operando DRIFTS studies

Nuevo conocimiento de la influencia de los sitios de superficie ácida de la zeolita en la capacidad de eliminar el ozono gaseoso mediante estudios de operando DRIFTS

dc.creatorValdés, Héctor
dc.creatorUlloa, Francisco J.
dc.creatorSolar, Víctor A.
dc.creatorCepeda, Manuel S.
dc.creatorAzzolina Jury, Federico
dc.creatorThibault Starzyk, Frédéric
dc.date2020-05-27T22:47:42Z
dc.date2020-05-27T22:47:42Z
dc.date2020-01-01
dc.identifierMicroporous and Mesoporous Materials 294 (2020) 109912
dc.identifier1387-1811
dc.identifierhttp://repositoriodigital.ucsc.cl/handle/25022009/1667
dc.descriptionRecently, natural zeolites have started to be used as alternative materials for ozone abatement from working environments. In this study, a surface response methodology based on a D-Optimal design is applied to develop a transition-metal-modified natural zeolite that increases ozone removal efficiency. Ozone adsorption and/or decomposition onto natural and cobalt modified natural zeolite were studied by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). Results evidenced that ozone is adsorbed and decomposed at strong Lewis acidic sites, whereas ozone adsorption products interact with surface OH groups. Additionally, DRIFTS studies indicate that nitrous species are adsorbed at acidic sites, reducing the capacity to decompose ozone when ozone is generated from air.
dc.languageen
dc.publisherMicroporous and Mesoporous Materials
dc.sourcehttps://doi.org/10.1016/j.micromeso.2019.109912
dc.subjectDRIFTS
dc.subjectNatural zeolite
dc.subjectOzone
dc.subjectSurface acid sites
dc.subjectTransition metals
dc.titleNew insight of the influence of acidic surface sites of zeolite on the ability to remove gaseous ozone using operando DRIFTS studies
dc.titleNuevo conocimiento de la influencia de los sitios de superficie ácida de la zeolita en la capacidad de eliminar el ozono gaseoso mediante estudios de operando DRIFTS
dc.typeArticle


Este ítem pertenece a la siguiente institución