1996
DOI: 10.1016/0926-3373(95)00039-9
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LaCeCo perovskites as catalysts for exhaust gas depollution

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Cited by 46 publications
(27 citation statements)
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“…More importantly, along with the second peak of NO, O 2 signal was detected with a proportional amount of NO. This observation is similar with the records by Forni et al [15]. It could be concluded that NO 2 was desorbed above 250 8C, and the detections of both NO and O 2 were due to the fractions of NO 2 molecular bombed by electron beam in the QMAS chamber.…”
Section: Tpd and Drifts Study Of No And O 2 Co-adsorption And Desorptionsupporting
confidence: 81%
See 1 more Smart Citation
“…More importantly, along with the second peak of NO, O 2 signal was detected with a proportional amount of NO. This observation is similar with the records by Forni et al [15]. It could be concluded that NO 2 was desorbed above 250 8C, and the detections of both NO and O 2 were due to the fractions of NO 2 molecular bombed by electron beam in the QMAS chamber.…”
Section: Tpd and Drifts Study Of No And O 2 Co-adsorption And Desorptionsupporting
confidence: 81%
“…On the other hand, similar to the results in refs. [13][14][15], substitution of cerium with increasing values resulted in the appearance of additional phases and a change of perovskite structure itself. For x = 0 and 0.05, the structures were the rhombohedral LaCoO 3 -type (JCPD-ICDD 25-1060); when x !…”
Section: Structural Features Of Catalystsmentioning
confidence: 99%
“…Above this percentage, segregation in the perovskite structure is typically observed, which decreases their catalytic activity [46]. According to several studies, partial substitution of perovskites with Ce led to an increase in catalytic oxidation activity for propane [47], carbon monoxide [48], methane [49] and ethanol [50]. Falcon et al [45] investigated the effect of Sr doping on the catalytic activity for complete oxidation of CO of Ln x Ni 1-x O 3 where Ln = Pr, Sm, Eu (with x = 0.01, 0.05 and 0.10) as compared to non-doped LnNiO 3 .…”
Section: Bare Perovskite Materialsmentioning
confidence: 98%
“…With the substitutions at 'A' and/or 'B' site with different valence elements creates valences and vacancies, which helps in controlling the mechanism of a reaction. This tailoring possibility with perovskite structure has been used and several compositions have been reported for NO reduction using hydrocarbons or CO as reducing agent [16][17][18][19][20][21][22]. Particularly in the case of three-way catalysis for auto-exhaust emission reduction, perovskite shows activity by participation of lattice oxygen for oxidation and selectively taking oxygen from NO x for filling back the oxygen vacancy formed.…”
Section: Introductionmentioning
confidence: 97%