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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Costa, C. N. | en |
| dc.contributor.author | Savva, P. G. | en |
| dc.contributor.author | Andronikou, C. | en |
| dc.contributor.author | Lambrou, P. S. | en |
| dc.contributor.author | Polychronopoulou, K. | en |
| dc.contributor.author | Belessi, V. C. | en |
| dc.contributor.author | Stathopoulos, V. N. | en |
| dc.contributor.author | Pomonis, P. J. | en |
| dc.contributor.author | Efstathiou, A. M. | en |
| dc.date.accessioned | 2015-11-24T16:48:50Z | - |
| dc.date.available | 2015-11-24T16:48:50Z | - |
| dc.identifier.issn | 0021-9517 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/9377 | - |
| dc.rights | Default Licence | - |
| dc.subject | lean de-nox | en |
| dc.subject | no reduction | en |
| dc.subject | no tpd | en |
| dc.subject | perovskites | en |
| dc.subject | noble-metal catalysts | en |
| dc.subject | nitric-oxide | en |
| dc.subject | nitrogen monoxide | en |
| dc.subject | carbon-monoxide | en |
| dc.subject | no+h-2 reaction | en |
| dc.subject | burn conditions | en |
| dc.subject | excess oxygen | en |
| dc.subject | plus co | en |
| dc.subject | reduction | en |
| dc.subject | h-2 | en |
| dc.title | An investigation of the NO/H-2/O-2 (lean de-NOx) reaction on a highly active and selective Pt/La0.7Sr0.2Ce0.1FeO3 catalyst at low temperatures | en |
| heal.type | journalArticle | - |
| heal.type.en | Journal article | en |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.identifier.primary | DOI 10.1006/jcat.2002.3645 | - |
| heal.identifier.secondary | <Go to ISI>://000176916300018 | - |
| heal.identifier.secondary | http://ac.els-cdn.com/S0021951702936456/1-s2.0-S0021951702936456-main.pdf?_tid=5f8618acf1f0db7679a144f052ffd08a&acdnat=1333036498_32dfcce635e9575bbce5f6a0ee7b0758 | - |
| heal.language | en | - |
| heal.access | campus | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.publicationDate | 2002 | - |
| heal.abstract | A 0.1 wt% Pt supported on La0.7Sr0.2Ce0.1FeO3 solid (mixed oxide containing LaFeO3, SrFeO3-x, CeO2, and Fe2O3 phases) has been studied for the NO/H-2/O-2 reaction in the 100-400degreesC range. For a critical comparison, 0.1 wt% Pt was supported on SiO2, CeO2, and Fe2O3 and tested under the same reaction conditions. For the Pt/La0.7Sr0.2Ce0.1FeO3 catalyst a maximum in the NO conversion (83%) has been observed at 150degreesC with a N-2 selectivity value of 93%, while for the Pt/SiO2 catalyst at 120degreesC (82% conversion) with a N-2 selectivity value of 65% using a GHSV of 80,000 h(-)1 Low N-2 selectivity values, less than 45%, were obtained with the Pt/CeO2 and Pt/Fe2O3 catalysts in the 100-400degreesC range. For the Pt/La0.7Sr0.2Ce0.1FeO3 catalyst, addition of 5% H2O in the feed stream at 140degreesC resulted in a widening of the operating temperature window with appreciable NO conversion and no negative effect on the stability of the catalyst during 20 h on stream. In addition, a remarkable N-2 yield (93%) after 20 h on 0.25% NO/1% H-2/5% O-2/5% H2O/He gas stream at 140degreesC has been observed. Remarkable N-2 selectivity values in the range of 80-90% have also been observed in the 100-200degreesC low-temperature range either in the absence or in the presence of water in the feed stream. A maximum specific integral reaction rate of 443.5 mumol N-2/S . 9 Of Pt metal was measured at 160degreesC during reaction with a 0.25% NO/1% H-2/5% O-2/5% H2O/He gas mixture. This value is higher by 90% than the corresponding one observed on the 0.1 wt% Pt/SiO2 catalyst at 120degreesC and it is the highest value ever reported for the reaction at hand in the 100-200degreesC low-temperature range on Pt-based catalysts. A TOF value of 13.4 x 10(-2) s(-1) for N-2 formation was calculated at 110degrees'C for the Pt/La0.7Sr0.2Ce0.1FeO3 catalyst. Temperature-programmed desorption (TPD) of NO and transient titration experiments of the catalyst surface following NO/H-2/O-2 reaction have revealed important information concerning the amount and chemical composition of active and inactive (spectator) adsorbed N-containing species present under reaction conditions. (C) 2002 Elsevier Science (USA). | en |
| heal.publisher | Elsevier | en |
| heal.journalName | Journal of Catalysis | en |
| heal.journalType | peer reviewed | - |
| heal.fullTextAvailability | TRUE | - |
| Appears in Collections: | Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ | |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Pomonis-2002-An investigation of.pdf | 241.47 kB | Adobe PDF | View/Open Request a copy |
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