Double perovskites La<sub>2</sub>MMnO<sub>6</sub> as catalyst for propane combustion
The synthesis, structural, spectroscopic and morphological characterization; as well as the evaluation of the catalytic properties, of a family of oxides La<sub>2</sub>MMnO<sub>6</sub> , with M = Co, Ni and Cu are presented in this work. The materials were obtained by solid s...
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2017
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/87549 |
| Aporte de: |
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I19-R120-10915-87549 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Bulk catalysts Characterization Double perovskites Lanthanum Propane combustion Synthesis |
| spellingShingle |
Ciencias Exactas Bulk catalysts Characterization Double perovskites Lanthanum Propane combustion Synthesis Tasca, Julia Elena Lavat, Araceli Elisabet González, María Gloria Double perovskites La<sub>2</sub>MMnO<sub>6</sub> as catalyst for propane combustion |
| topic_facet |
Ciencias Exactas Bulk catalysts Characterization Double perovskites Lanthanum Propane combustion Synthesis |
| description |
The synthesis, structural, spectroscopic and morphological characterization; as well as the evaluation of the catalytic properties, of a family of oxides La<sub>2</sub>MMnO<sub>6</sub> , with M = Co, Ni and Cu are presented in this work. The materials were obtained by solid state reaction and through citrate route. The structure was determined by X-ray diffraction and a correlation was found between the crystal cell parameters and the M(II) cation sizes, as a consequence of MO<sub>6</sub> and MnO<sub>6</sub> octahedral ordering. According to infrared spectroscospic characterization of the materials prepared by citrate route, a diminution of the M<sup>4+</sup>-O bond strength was observed, according with M(II) sizes, in the sequence: Cu > Ni > Co. More labile O species should be present in La<sub>2</sub>CoMnO<sub>6</sub>-CIT. The electron microscopy morphology of this oxide confirmed the presence of agglomerated tiny particles. The presence of nanometic crystallites was confirmed by transmission electron microscopy. The catalytic tests, using propane as reaction test, were carried out in a fixed bed micro reactor, coupled with an “on line” chromatograph. The materials obtained by citrate route, despite M(II) cations, are better suited for propane combustion and the catalyst La<sub>2</sub>CoMnO<sub>6</sub> is the most active of the investigated series with T<sub>90</sub> ∼ 500 °C. |
| format |
Articulo Articulo |
| author |
Tasca, Julia Elena Lavat, Araceli Elisabet González, María Gloria |
| author_facet |
Tasca, Julia Elena Lavat, Araceli Elisabet González, María Gloria |
| author_sort |
Tasca, Julia Elena |
| title |
Double perovskites La<sub>2</sub>MMnO<sub>6</sub> as catalyst for propane combustion |
| title_short |
Double perovskites La<sub>2</sub>MMnO<sub>6</sub> as catalyst for propane combustion |
| title_full |
Double perovskites La<sub>2</sub>MMnO<sub>6</sub> as catalyst for propane combustion |
| title_fullStr |
Double perovskites La<sub>2</sub>MMnO<sub>6</sub> as catalyst for propane combustion |
| title_full_unstemmed |
Double perovskites La<sub>2</sub>MMnO<sub>6</sub> as catalyst for propane combustion |
| title_sort |
double perovskites la<sub>2</sub>mmno<sub>6</sub> as catalyst for propane combustion |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/87549 |
| work_keys_str_mv |
AT tascajuliaelena doubleperovskiteslasub2submmnosub6subascatalystforpropanecombustion AT lavataracelielisabet doubleperovskiteslasub2submmnosub6subascatalystforpropanecombustion AT gonzalezmariagloria doubleperovskiteslasub2submmnosub6subascatalystforpropanecombustion |
| bdutipo_str |
Repositorios |
| _version_ |
1764820490184032259 |