Understanding the stability of Co-supported catalysts during ethanol reforming as addressed by in situ temperature and spatial resolved XAFS analysis

dc.creatorAvila-Neto, CN
dc.creatorLiberatori, JWC
dc.creatorda Silva, AM
dc.creatorZanchet, D
dc.creatorHori, CE
dc.creatorNoronha, FB
dc.creatorBueno, JMC
dc.date2012
dc.dateMAR
dc.date2014-07-30T19:30:29Z
dc.date2015-11-26T17:51:07Z
dc.date2014-07-30T19:30:29Z
dc.date2015-11-26T17:51:07Z
dc.date.accessioned2018-03-29T00:34:29Z
dc.date.available2018-03-29T00:34:29Z
dc.identifierJournal Of Catalysis. Academic Press Inc Elsevier Science, v. 287, n. 124, n. 137, 2012.
dc.identifier0021-9517
dc.identifierWOS:000302046200015
dc.identifier10.1016/j.jcat.2011.12.013
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/73388
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/73388
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289891
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCo catalysts, based on alumina supports modified with La2O3 and CeO2, have been explored in the steam reforming of ethanol (SRE). The addition of oxygen in the reactants, process called oxy-reforming of ethanol (ORE), and the effect of adding Pt as a promoter were also addressed. One of the main challenges of this system is to hinder carbon deposition that leads to catalyst deactivation. In this work, the stability against carbon deposition was correlated to the control of the Co2+/Co-0 ratio, which was addressed by in situ temperature-resolved X-ray absorption near edge spectroscopy (XANES). Temperature- and spatial resolved XANES indicated that the nature of supports, the presence/absence of Pt promoter and the composition of oxidants (water and oxygen) in the feed stream determine the degree of reduction of Co under reaction conditions. The control of the Co2+/Co-0 ratio can equilibrate the steps of ethanol activation and carbon oxidation, resulting in stable catalysts. (C) 2011 Elsevier Inc. All rights reserved.
dc.description287
dc.description124
dc.description137
dc.descriptionVALE
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFINEP (Financiadora de Estudos e Projetos)
dc.descriptionBrazilian Synchrotron Light Laboratory (LNLS)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageen
dc.publisherAcademic Press Inc Elsevier Science
dc.publisherSan Diego
dc.publisherEUA
dc.relationJournal Of Catalysis
dc.relationJ. Catal.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectHydrogen production
dc.subjectEthanol reforming
dc.subjectCeO2
dc.subjectCo-supported catalysts
dc.subjectIn situ XAFS
dc.subjectCobalt-based Catalysts
dc.subjectX-ray-diffraction
dc.subjectWater-gas Shift
dc.subjectSelective Hydrogenation
dc.subjectCo/sio2 Catalysts
dc.subjectMetal-catalysts
dc.subjectBio-ethanol
dc.subjectSteam
dc.subjectOxidation
dc.subjectOxide
dc.titleUnderstanding the stability of Co-supported catalysts during ethanol reforming as addressed by in situ temperature and spatial resolved XAFS analysis
dc.typeArtículos de revistas


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