Self-propagating high-temperature synthesis with post-heat treatment of La1−xSrxFeO3 (x=0–1) perovskite as catalyst for soot combustion

Hirano, Tomonari; Tosho, Tsuyoshi; Watanabe, Toshiyuki; Akiyama, Tomohiro

doi:10.1016/j.jallcom.2008.02.038

Cited by 28 publications

(17 citation statements)

References 16 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, its treatment 3 temperature and the processing time are significantly lower than those of conventional preparation routes. One can also expect to produce very fine and crystalline perovskitetype oxide powders by using this SHS method [26][27][28].Other combustion techniques are widely used to synthesize solid catalyst [29,30]. Among them, the solution combustion synthesis (SCS) method is used to synthesize perovskite-type oxides [31].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Self-propagating high-temperature synthesis of LaMO3 perovskite-type oxide using heteronuclearcyano metal complex precursors

Sánchez-Rodríguez

Wada

Yamaguchi

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

The decomposition of La[Fe(CN) 6 ] and La [Co(CN) 6 ] under different atmospheres has been analyzed by thermogravimetry (TG) and differential thermal analysis (DTA). In addition, the decomposition temperature at different sample locations was monitored for sample masses around 2 g of La[Fe(CN) 6 ] and La[Co(CN) 6 ], when they were calcined for 1 h at temperatures ranging from 200 to 400 ºC in a controlled gas-flow system.Results showed that, for sample large enough of these cyano complex precursors undergo combustion when are decomposed under oxygen atmosphere. X-ray diffraction 2 revealed that perovskite-type oxides crystallize due to the overheating of the process. As a result, it has been possible to produce LaFeO 3 and LaCoO 3 perovskite-type oxide powders by SHS under oxygen atmosphere using La[Fe(CN) 6 ] and La[Co(CN) 6 ] as a precursor. The effect of the ignition temperature has been investigated. The specific surface area of the perovskite-type oxides produced via SHS using heteronuclearcyano metal complex as a precursor is significantly higher than that of other LaMO 3 produced using the same technique but obtained from other type of precursors.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Results will be 4 compared with those of similar perovskite-type oxides obtained via SHS using a mixture of different powders as a precursor [26,27]. 6 1 M mixed solutions.…”

Section: Introductionmentioning

confidence: 99%

Self-propagating high-temperature synthesis of LaMO3 perovskite-type oxide using heteronuclearcyano metal complex precursors

Sánchez-Rodríguez

Wada

Yamaguchi

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

show abstract

“…There are many reports on the use of bulk SHS catalysts' activity in different processes [3][4][5][6][7][8][9][10][11][12]. Because of the high synthesis temperatures and fast cooling rates achieved, combustion synthesis (CS) and especially SHS produce materials that are characterised by heavily distorted atomic structures, with a very large proportion of catalytically active centres.…”

Section: Introductionmentioning

confidence: 99%

Combustion Synthesis during Flame Spraying (“CAFSY”) for the Production of Catalysts on Substrates

et al. 2017

View full text Add to dashboard Cite

Combustion-assisted flame spraying ("CAFSY") has been used to produce catalytically active nickel aluminide coatings on ceramic substrates. Their catalytic activity was studied in CO 2 (dry) reforming of methane, which is particularly significant for environmental protection as well as production of synthesis gas (CO + H 2 ). By varying the CAFSY processing parameters, it is possible to obtain a range of Ni-Al alloys with various ratios of catalytically active phases on the substrate. The influence of the number of coating layers and the type of substrate on the final catalyst composition and on the catalytic activity of the CAFSY coatings was studied and is presented here. The morphology and microstructure of the composite coatings were determined by scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) elemental analysis, X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) specific area analysis. Catalytic tests for dry reforming of methane were carried out using crushed pellets from the coatings at temperatures of 750-900 • C, and gas chromatography showed that methane conversion approached 88% whereas that of carbon dioxide reached 100%. The H 2 /CO ratio in the synthesis gas produced by the reaction varied from about 0.7 to over 1.2, depending on the catalyst and substrate type and testing temperature.

show abstract

“…Substituted LaFeO 3 materials have emerged in recent years as promising catalysts [1][2][3][4], cathodes to be used in solid oxide fuel cells (SOFCs) [5][6][7][8][9][10][11], gas ceramic membranes [12,13], and sensing layers for chemical sensors [14][15][16][17]. Among them, the most widely studied series is characterized by the general formula La 1-x Sr x Fe 1-y M y O 3±w (where M is usually a transition metal).…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, combustion synthesis (CS) exploits exothermic reactions between reactants (usually in powdered form) which ϯ after being heated up to the ignition temperature start reacting in a self-sustaining combustion regime, thus they do not require any additional energy contribution to complete the production of the desired product. SCS is a more recently developed variant of combustion synthesis, typically exploited in the preparation of oxide-based nanomaterials [26], including differently substituted lanthanum ferrites [1,2,27], and only lately in the synthesis of metallic-based nanoparticles and nanostructures [28,29].…”

Section: Introductionmentioning

confidence: 99%

Solution combustion synthesis of La1−xSrxFe1−yCuyO3±w (x=0, 0.2; y=0, 0.2) perovskite nanoparticles: Conventional vs. microwaves ignition

Rosa¹,

Ponzoni²,

Veronesi³

et al. 2015

Ceramics International

View full text Add to dashboard Cite

Self-propagating high-temperature synthesis with post-heat treatment of La1−xSrxFeO3 (x=0–1) perovskite as catalyst for soot combustion

Cited by 28 publications

References 16 publications

Self-propagating high-temperature synthesis of LaMO3 perovskite-type oxide using heteronuclearcyano metal complex precursors

Self-propagating high-temperature synthesis of LaMO3 perovskite-type oxide using heteronuclearcyano metal complex precursors

Combustion Synthesis during Flame Spraying (“CAFSY”) for the Production of Catalysts on Substrates

Solution combustion synthesis of La1−xSrxFe1−yCuyO3±w (x=0, 0.2; y=0, 0.2) perovskite nanoparticles: Conventional vs. microwaves ignition

Contact Info

Product

Resources

About