Preparation, characterization and the standard enthalpy of formation of La0.95MnO3+δ and Sm0.95MnO3+δ

Wandekar, R.V.; Wani, B.N.; Das, D.; Bharadwaj, S.R.

doi:10.1016/j.tca.2009.03.013

Cited by 3 publications

(5 citation statements)

References 13 publications

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“…It is found that the La/Mn atomic ratio derived from the phase composition in Tables 1 and 2 is actually higher slightly than that measured by XRF for all the six samples, suggesting presence of MnOx species that is not detectable by XRD. This is similar to that observed for the LaeFe oxide samples [6,11] and for the LaeMn oxide samples [14,15]. Faye et al reported that the LaeFe oxide sample with La/Fe atomic ratio at 0.83 (measured by ICP) is single phase perovskites according to XRD pattern [6].…”

Section: Catalytic Activity For Methane Oxidationsupporting

confidence: 86%

“…So, an appreciable number of Mn 4þ ions can be present in LaeMn perovskite crystal, with molar ratio of Mn 4þ /(Mn 3þ þ Mn 4þ ) equal to 0.27 [14] or 0.34 [17]. In Table 2, for the four samples with La/Mn atomic ratio at 1.03, 0.89, 0.81 and 0.72, it is seen that the molar ratio of Mn 4þ /(Mn 3þ þ Mn 4þ ) in the perovskite crystals is varying within 0.25e0.40.…”

Section: Phase Composition and Crystallite Sizementioning

confidence: 99%

“…Nevertheless, it is certain that surface Mn 4þ ions are present in an appreciable quantity. This is because Mn 4þ ions are already present in the perovskite crystal [14,17]. And also it is understood that surface Mn 3þ ions can be converted into Mn 4þ ions when there are adsorbed oxygen species at the surface getting electrons from the neighboring Mn 3þ ions [3,6].…”

Section: Elemental Composition At the Surfacementioning

confidence: 99%

“…It is reported that the sample with La/Mn atomic ratio of 0.95 (the La/Mn atomic ratio was measured by ICP) and calcined at 800 C is single phase perovskite [14]. [14].…”

Section: Introductionmentioning

confidence: 99%

“…It is reported that the sample with La/Mn atomic ratio of 0.95 (the La/Mn atomic ratio was measured by ICP) and calcined at 800 C is single phase perovskite [14]. [14]. Besides, the sample with La/Mn atomic ratio of 0.91 (measured by ICP) and calcined at 800 C is also reported to be single phase perovskite [15].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Preparation and characterization of the non-stoichiometric La–Mn perovskites

Gao

Wang

et al. 2015

Journal of Alloys and Compounds

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Section: Catalytic Activity For Methane Oxidationsupporting

confidence: 86%

Section: Phase Composition and Crystallite Sizementioning

confidence: 99%

Section: Elemental Composition At the Surfacementioning

confidence: 99%

“…It is reported that the sample with La/Mn atomic ratio of 0.95 (the La/Mn atomic ratio was measured by ICP) and calcined at 800 C is single phase perovskite [14]. [14].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Preparation and characterization of the non-stoichiometric La–Mn perovskites

Gao

Wang

et al. 2015

Journal of Alloys and Compounds

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Structure and high-temperature properties of the (Sr,Ca,Y)(Co, Mn)O3−y perovskites — perspective cathode materials for IT-SOFC

Napolsky¹,

Drozhzhin²,

Istomin³

et al. 2012

Journal of Solid State Chemistry

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Oxygen deficient perovskites Sr 0.75 Y 0.25 Co 1-x Mn x O 3-y , x=0.5 and 0.75, were prepared by using the citrate route at 1373-1573K for 48 h. The cubic Pm-3m perovskite structure for x=0.5 was confirmed by electron diffraction study and refined using neutron powder diffraction (NPD) data. High-temperature thermal expansion properties of the prepared compounds were studied in air using both dilatometry and high-temperature X-ray powder diffraction data (HTXRPD). They

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An insight into the effects of transition metals on the thermal expansion of complex perovskite compounds: an experimental and density functional theory investigation

Wang

Han

Song

et al. 2018

Phys. Chem. Chem. Phys.

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ABO perovskite-type LaCoO, LaCoFeO, LaCoNiO, and LaCoMnO complex oxides were synthesized using the sol-gel method. The microstructure and the thermal expansion behavior of the oxides were investigated. Insights into phonon dispersion and the effects of doped transition metals on thermal expansion were obtained by first-principles calculations based on density functional theory. Thermal expansion coefficients (TECs) at finite temperatures were obtained by quasi harmonic approximation. B-site doping was found to reduce the size of the crystalline grains and the TECs of perovskite compounds. The average TECs of LaCoO, LaCoFeO, LaCoNiO, and LaCoMnO were 25 × 10 K, 11 × 10 K, 12.5 × 10 K, and 5 × 10 K, respectively, in the 0-1000 K temperature range. In addition, the TECs of LaCoFeO and LaCoNiO matched well with those of some common electrolytes.

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Preparation, characterization and the standard enthalpy of formation of La0.95MnO3+δ and Sm0.95MnO3+δ

Cited by 3 publications

References 13 publications

Preparation and characterization of the non-stoichiometric La–Mn perovskites

Preparation and characterization of the non-stoichiometric La–Mn perovskites

Structure and high-temperature properties of the (Sr,Ca,Y)(Co, Mn)O3−y perovskites — perspective cathode materials for IT-SOFC

An insight into the effects of transition metals on the thermal expansion of complex perovskite compounds: an experimental and density functional theory investigation

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