Show simple item record

dc.contributor.authorEfstathiou, Angelos M.en
dc.contributor.authorChafik, T.en
dc.contributor.authorBianchi, D.en
dc.contributor.authorBennett, C. O.en
dc.creatorEfstathiou, Angelos M.en
dc.creatorChafik, T.en
dc.creatorBianchi, D.en
dc.creatorBennett, C. O.en
dc.date.accessioned2019-11-21T06:18:51Z
dc.date.available2019-11-21T06:18:51Z
dc.date.issued1994
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/55437
dc.description.abstractThe evolution of surface species (their chemical composition and surface coverage) formed during the CO/H2 reaction at 220°C on 1 wt% Rh/Al2O3 catalyst was studied by transient isotopic and various hydrogen titration techniques using both in situ mass spectrometry and FTIR. There is a very small amount of active carbon, CHx (θCHx < 0.03), and a large amount of surface linear and bridged CO species (θCO = 0.93) which participate in the formation of CH4 during reaction. Their amounts stay practically constant with reaction time in CO/H2 even after 1 h on stream. Also present on the Rh surface are some CxHy (alkyl chains) species which largely grow with reaction time (during the first hour on stream) but do not participate in the reaction mechanism of CH4 formation (spectator species). In addition, formate and carbonate (spectator species) build slowly on the alumina support surface even after 1 h of reaction. The surface coverage of hydrogen, θH, is found to be very small, a result consistent with the coverages of CO, CHx, and CxHy species. CO dissociation over the present 1 wt% Rh/Al2O3 (1.5-nm Rh particles) appears to largely control the overall rate of methane formation, a result similar to that previously reported over the 5 wt% Rh Al2O3 (9.0-nm Rh particles) catalyst. © 1994 by Academic Press, Inc.en
dc.sourceJournal of Catalysisen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0000670084&doi=10.1006%2fjcat.1994.1204&partnerID=40&md5=fb102f33315b4fcdeae32fefe184e4f1
dc.titleA Transient Kinetic Study of the Co/H2 Reaction on Rh/Al2O3 Using FTIR and Mass Spectroscopyen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1006/jcat.1994.1204
dc.description.volume148
dc.description.issue1
dc.description.startingpage224
dc.description.endingpage239
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 :42</p>en
dc.source.abbreviationJ.Catal.en
dc.contributor.orcidEfstathiou, Angelos M. [0000-0001-8393-8800]


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