Matches in SemOpenAlex for { <https://semopenalex.org/work/W2243345352> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W2243345352 abstract "As demonstrated in the literature, palladium exchanged perovskites offers enhanced catalytic performance in TWC applications [1]. Concerning the elimination of nitrogen oxides under lean conditions over perovskite catalysts, the use of hydrogen as a reducing agent has been less studied [2]. Considering the stringency of the legislation for emission in engines, the use of hydrogen as a reducing agent to eliminate NO x under lean conditions and at relatively low temperatures may be a feasible solution in the forthcoming future. In this work we compare two palladium exchanged perovskite catalysts (La 0.95 Ce 0.05 Fe 0.95 Pd 0.05 O 3 and BaTi 0.95 Pd 0.05 O 3 both calcined at 900°C) in terms of their catalytic activity regarding the NO-reduction employing H 2 as reducing agent. The effect of H 2 O + CO 2 or CO to the catalytic activity is also reported paying special attention to the N 2 -selectivity of the catalysts.ResultsBoth catalysts showed similar NO-conversion capability (70-75%) under a feedstock composition of 720 ppm NO, 5% O 2 and 1% H 2 . Under these conditions, the catalytic performance of the BaTi 0.95 Pd 0.05 O 3 catalyst was at low temperatures compared to the La 0.95 Ce 0.05 Fe 0.95 Pd 0.05 O 3 catalyst (150°C vs. 225°C). In the presence of H 2 O and CO 2 in the feedstock, the maximum NO-conversion achieved at 240°C with the La 0.95 Ce 0.05 Fe 0.95 Pd 0.05 O 3 was 55% whilst 70% with the BaTi 0.95 Pd 0.05 O 3 catalyst. Addition of 0.25% CO to the feedstock (without H 2 O and CO 2 ) reduced the NO-conversion capability of both catalysts drastically (50% with BaTi 0.95 Pd 0.05 O 3 and 60% with La 0.95 Ce 0.05 Fe 0.95 Pd 0.05 O 3 catalyst). N 2 -selectivity was higher with BaTi 0.95 Pd 0.05 O 3 (over 80%) compared to La 0.95 Ce 0.05 Fe 0.95 Pd 0.05 O 3 (65-75%) at temperatures below 200°C under lean conditions, indicating a more selective character at low temperatures for single-site catalyst. N 2 -selectivity of both catalysts was very little influenced in the presence of H 2 O and CO 2 in the feedstock, whereas it was reduced down to 50-60% with the addition of CO.[1] R. Karita, H. Kusabe, K. Sasaki, Y. Teraoka, Catal. Today 119 (2007) 83-87.[2] I. Twagiraschema, M. Engelman-Pirez, M. Frere, L. Burylo, L. Gengembre, C. Dujardin, P. Granger, Catal. Today 119 (2007) 100-105." @default.
- W2243345352 created "2016-06-24" @default.
- W2243345352 creator A5033914545 @default.
- W2243345352 creator A5073474260 @default.
- W2243345352 date "2008-09-30" @default.
- W2243345352 modified "2023-09-24" @default.
- W2243345352 title "H 2 –SCR NO x catalytic activity and N 2 -selectivity of Pd-exchanged perovskites" @default.
- W2243345352 hasPublicationYear "2008" @default.
- W2243345352 type Work @default.
- W2243345352 sameAs 2243345352 @default.
- W2243345352 citedByCount "0" @default.
- W2243345352 crossrefType "journal-article" @default.
- W2243345352 hasAuthorship W2243345352A5033914545 @default.
- W2243345352 hasAuthorship W2243345352A5073474260 @default.
- W2243345352 hasConcept C118792377 @default.
- W2243345352 hasConcept C155011858 @default.
- W2243345352 hasConcept C15752686 @default.
- W2243345352 hasConcept C161790260 @default.
- W2243345352 hasConcept C178790620 @default.
- W2243345352 hasConcept C179104552 @default.
- W2243345352 hasConcept C185592680 @default.
- W2243345352 hasConcept C186423591 @default.
- W2243345352 hasConcept C192562407 @default.
- W2243345352 hasConcept C206139338 @default.
- W2243345352 hasConcept C502130503 @default.
- W2243345352 hasConcept C512968161 @default.
- W2243345352 hasConcept C7082614 @default.
- W2243345352 hasConceptScore W2243345352C118792377 @default.
- W2243345352 hasConceptScore W2243345352C155011858 @default.
- W2243345352 hasConceptScore W2243345352C15752686 @default.
- W2243345352 hasConceptScore W2243345352C161790260 @default.
- W2243345352 hasConceptScore W2243345352C178790620 @default.
- W2243345352 hasConceptScore W2243345352C179104552 @default.
- W2243345352 hasConceptScore W2243345352C185592680 @default.
- W2243345352 hasConceptScore W2243345352C186423591 @default.
- W2243345352 hasConceptScore W2243345352C192562407 @default.
- W2243345352 hasConceptScore W2243345352C206139338 @default.
- W2243345352 hasConceptScore W2243345352C502130503 @default.
- W2243345352 hasConceptScore W2243345352C512968161 @default.
- W2243345352 hasConceptScore W2243345352C7082614 @default.
- W2243345352 hasLocation W22433453521 @default.
- W2243345352 hasOpenAccess W2243345352 @default.
- W2243345352 hasPrimaryLocation W22433453521 @default.
- W2243345352 hasRelatedWork W1568860175 @default.
- W2243345352 hasRelatedWork W1973858361 @default.
- W2243345352 hasRelatedWork W2002604281 @default.
- W2243345352 hasRelatedWork W2009070589 @default.
- W2243345352 hasRelatedWork W2023231307 @default.
- W2243345352 hasRelatedWork W2029056805 @default.
- W2243345352 hasRelatedWork W2030689853 @default.
- W2243345352 hasRelatedWork W2032899738 @default.
- W2243345352 hasRelatedWork W2035711965 @default.
- W2243345352 hasRelatedWork W2076602087 @default.
- W2243345352 hasRelatedWork W2082119088 @default.
- W2243345352 hasRelatedWork W2083740019 @default.
- W2243345352 hasRelatedWork W2089524406 @default.
- W2243345352 hasRelatedWork W2520487576 @default.
- W2243345352 hasRelatedWork W2522266348 @default.
- W2243345352 hasRelatedWork W2560789829 @default.
- W2243345352 hasRelatedWork W2979985406 @default.
- W2243345352 hasRelatedWork W3092866447 @default.
- W2243345352 hasRelatedWork W315467614 @default.
- W2243345352 hasRelatedWork W3191470177 @default.
- W2243345352 isParatext "false" @default.
- W2243345352 isRetracted "false" @default.
- W2243345352 magId "2243345352" @default.
- W2243345352 workType "article" @default.