A novel LaFeO3−XNX oxynitride. Synthesis and characterization

Gallego, Germán Sierra; Alzate, N. Marín; Arnache, O.

doi:10.1016/j.jallcom.2012.09.042

Cited by 28 publications

(14 citation statements)

References 32 publications

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“…The peak becoming weaker (Figure 1B-c versus Figure 1B-b) was ascribed to the decomposing of nitrate anions. The bands in the 504−730 cm −1 region (Figure 1B-c) were assigned to the stretching modes of the octahedral FeO 6 groups in perovskite, which were the most important absorption bands of the perovskite structure [30]. The band located at ca .…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of CeO2-LaFeO3 Perovskite Composite and Its Application for 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone (NNK) Degradation

et al. 2016

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A facile and environmentally friendly surface-ion adsorption method using CeCO3OH@C as template was demonstrated to synthesize CeO2-LaFeO3 perovskite composite material. The obtained composite was characterized by X-ray diffraction (XRD), fourier transform infrared spectra (FT-IR), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), thermo-gravimetric analysis and differential scanning calorimetry (TG-DSC), N2 adsorption/desorption isotherms and X-ray photoelectron spectra (XPS) measurements. The catalytic degradation of nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) was tested to evaluate catalytic activity of the CeO2-LaFeO3 composite. Much better activity was observed for the CeO2-LaFeO3 composite comparing with CeO2 and LaFeO3. These results suggested that perovskite composite materials are a promising candidate for the degradation of tobacco-specific nitrosamines (TSNAs).

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Section: Resultsmentioning

confidence: 99%

Facile Synthesis of CeO2-LaFeO3 Perovskite Composite and Its Application for 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone (NNK) Degradation

et al. 2016

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“…Additionally, a slight shift of Mo−O−Me and Mo−O bands to lower wavenumbers was revealed by analysis of band positions in the FTIR spectra of Mo 5 O 14 ‐type oxide nitrides. Gallego reported a similar behavior for the characterization of LaFeO 3− x N x and attributed this shift to an incorporation of nitrogen in iron–oxygen octahedral . The band shift to lower wavenumbers corresponds to a weakening of bond strength.…”

Section: Resultsmentioning

confidence: 57%

“…Consequently, the cell volume was also increased after ammonolysis. The increase of cell parameters might be explained by incorporation of nitrogen in the anion lattice of (Mo,V) 5 O 14 . Logvinovich et al.…”

Section: Resultsmentioning

confidence: 99%

“…The increase of cell parameters might be explained by incorporation of nitrogen in the anion lattice of (Mo,V) 5 O 14 . [25] Logvinovich et al reported as imilar behavior of strontium-molybdenumo xide nitrides owing to thel arger effective ionic radius of N 3À (1.32 ) than that of O 2À (1.26 ). [26] Al ine broadening of the X-ray diffraction peaks after ammonolysis was observed.…”

Section: Structural Effects Of Nitrogen Incorporationmentioning

confidence: 98%

“…Gallegor eported as imilar behavior for the characterization of LaFeO 3Àx N x and attributed this shift to an incorporation of nitrogen in ironoxygen octahedral. [25] The band shift to lower wavenumbers corresponds to aw eakening of bond strength. Hence, decreasing metal-oxygen bond strength may lead to increased oxygen mobility and alteredr edox properties for the selective oxidation of propene.…”

Section: Structural Effects Of Nitrogen Incorporationmentioning

confidence: 99%

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Effects of Anion Substitution in (Mo,V)₅O₁₄ on Catalytic Performance in Selective Propene Oxidation to Acrolein

et al. 2016

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Molybdenum‐based mixed oxides represent well‐known model catalysts for the selective oxidation of light alkenes. Here, the anion lattice of (Mo,V)5O14 was for the first time modified by substituting oxygen ions with nitrogen ions. Investigations by XRD analysis, X‐ray absorption spectroscopy, and FTIR spectroscopy revealed that the incorporation of nitrogen in the structure of Mo5O14 proceeded without changing the average valence of metal centers. Additionally, impedance spectroscopy confirmed the formation of oxygen vacancies. Significant changes in conductivities remained after the removal of nitrogen. Temperature‐programmed reduction measurements were performed to investigate oxygen mobility. The enhanced reducibility of oxide nitrides correlated with the increased conductivity. Catalytic performance in selective propene oxidation was determined by online mass spectrometry und gas chromatography at different temperatures. Selectivity towards acrolein increased with increasing conductivity whereas the formation of total oxidation products COx decreased.

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ChemInform Abstract: A Novel LaFeO_3‐xN_x Oxynitride. Synthesis and Characterization.

Gallego¹,

Alzate²,

Arnache³

2013

ChemInform

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A Novel LaFeO 3-x N x Oxynitride. Synthesis and Characterization. -The title compound is prepared by ammonolysis of LaFeO3 in a stream of NH3 using N2 as carrier gas (900°C, 72 h). The LaFeO3 precursor is obtained by a combustion method starting with an aqueous solution of the corresponding metal nitrates and glycine as ignition promoter (1. slow evaporation at 100°C; 2. heating to 250°C where ignition takes place; 3. calcination at 900°C, 10 h). The product is characterized by powder XRD, SEM, IR, and Raman spectroscopy. LaFeO3-xNx oxynitrides are stable in air at room temperature and start to decompose above 550°C. -(GALLEGO*, G. S.; ALZATE, N. M.; ARNACHE, O.; J. Alloys Compd. 549 (2013) 163-169, http://dx.

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A novel LaFeO3−XNX oxynitride. Synthesis and characterization

Cited by 28 publications

References 32 publications

Facile Synthesis of CeO2-LaFeO3 Perovskite Composite and Its Application for 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone (NNK) Degradation

Facile Synthesis of CeO2-LaFeO3 Perovskite Composite and Its Application for 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone (NNK) Degradation

Effects of Anion Substitution in (Mo,V)₅O₁₄ on Catalytic Performance in Selective Propene Oxidation to Acrolein

ChemInform Abstract: A Novel LaFeO_3‐xN_x Oxynitride. Synthesis and Characterization.

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A novel LaFeO3−XNX oxynitride. Synthesis and characterization

Cited by 28 publications

References 32 publications

Facile Synthesis of CeO2-LaFeO3 Perovskite Composite and Its Application for 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone (NNK) Degradation

Facile Synthesis of CeO2-LaFeO3 Perovskite Composite and Its Application for 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone (NNK) Degradation

Effects of Anion Substitution in (Mo,V)5O14 on Catalytic Performance in Selective Propene Oxidation to Acrolein

ChemInform Abstract: A Novel LaFeO3‐xNx Oxynitride. Synthesis and Characterization.

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Effects of Anion Substitution in (Mo,V)₅O₁₄ on Catalytic Performance in Selective Propene Oxidation to Acrolein

ChemInform Abstract: A Novel LaFeO_3‐xN_x Oxynitride. Synthesis and Characterization.