Show simple item record

Effect of thermal aging on the transient kinetics of oxygen storage and release of commercial Cex Zr1-x O2-based solids

dc.contributor.authorChristou, Stavroula Y.en
dc.contributor.authorBradshaw, H.en
dc.contributor.authorButler, C.en
dc.contributor.authorDarab, J.en
dc.contributor.authorEfstathiou, Angelos M.en
dc.creatorChristou, Stavroula Y.en
dc.creatorBradshaw, H.en
dc.creatorButler, C.en
dc.creatorDarab, J.en
dc.creatorEfstathiou, Angelos M.en
dc.date.accessioned2019-11-21T06:17:43Z
dc.date.available2019-11-21T06:17:43Z
dc.date.issued2009
dc.identifier.issn1022-5528
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/55336
dc.description.abstractThe use of powerful analytical methodologies for the evaluation of the performance of commercial oxygen storage materials based on oxygen transient isothermal isotopic exchange experiments is illustrated in this study. Ce x Zr1-x O2-based oxygen storage materials were investigated. The materials were characterized for their dynamic oxygen storage and release properties through the pulse injection technique allowing the measurement of the oxygen storage capacity (OSC), and for their surface and bulk oxygen mobility through transient isothermal 18O isotopic exchange experiments. Very high OSC values were obtained after calcination in air at Tcalc. = 700 or 850 °C. However, after thermal aging at 1000 or 1100 °C of the as prepared samples, a significant deterioration of their OSC was observed. This fact was found to correlate with the significant increase in the activation energy of surface oxygen mobility. On the contrary, smaller increase in the activation energy of bulk oxygen diffusion with increasing Tcalc. was observed. © 2009 Springer Science+Business Media, LLC.en
dc.sourceTopics in Catalysisen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-71749090907&doi=10.1007%2fs11244-009-9402-2&partnerID=40&md5=6fff2165e00b65eea8a0277e79fc4360
dc.subjectSurfacesen
dc.subjectOxygenen
dc.subjectActivation energyen
dc.subjectStorage (materials)en
dc.subjectZirconiaen
dc.subjectCalcinationen
dc.subjectZirconiumen
dc.subjectCerium compoundsen
dc.subjectCeria-zirconiaen
dc.subjectDiffusion in gasesen
dc.subjectOSCen
dc.subjectOxygen isotopic exchangeen
dc.subjectBulk oxygen diffusionen
dc.subjectCerium alloysen
dc.subjectIsotopesen
dc.subjectOxygen diffusionen
dc.subjectSurface oxygen mobilityen
dc.subjectThermal agingen
dc.titleEffect of thermal aging on the transient kinetics of oxygen storage and release of commercial Cex Zr1-x O2-based solidsen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1007/s11244-009-9402-2
dc.description.volume52
dc.description.issue13-20
dc.description.startingpage2013
dc.description.endingpage2018
dc.author.faculty002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Χημείας / Department of Chemistry
dc.type.uhtypeArticleen
dc.description.notes<p>Cited By :12</p>en
dc.source.abbreviationTop.Catal.en
dc.contributor.orcidEfstathiou, Angelos M. [0000-0001-8393-8800]
dc.gnosis.orcid0000-0001-8393-8800


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record