Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts
Само за регистроване кориснике
2007
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The present work is focused on the synthesis and characterization of ceria-based mixed oxides. Ceria was combined with the other oxides from group III, with the intention of improving the catalytic properties I of thus obtained materials. (B2O3, Al2O3, Ga2O3, In2O3)-CeO2 mixed oxides with a wide range of Me2O3 contents have been prepared by a coprecipitation route. The obtained solid materials have been characterized in terms of their structural, textural, and surface properties, including the acid-base and red-ox features, by a variety of techniques (BET, XRD, Raman, SEM, TG, TPR-TPO). The acid-base properties were estimated by the adsorption of probe molecules (NH3 and SOA investigated by the use of two techniques: microcalorimetry and XPS. The obtained materials exhibited satisfactory homogeneity; the highest surface areas were achieved for Al2O3-CeO2 mixed oxides. Only the fluorite structure of CeO2 was observed by XRD for all prepared mixed oxides, along with the presence of oxyge...n vacancies, which has been proven by Raman spectroscopy. Red-ox properties were investigated for In2O3-CeO2 samples. The degree of reduction decreased with In2O3 loading. Besides, the reduction -oxidation cycle, performed up to 830 degrees C, changed the morphology and structure of the samples irreversibly, leading to crystallization of In2O3. Among all investigated materials, only boria created significant acidity, whereas the basicity has been found to be dependent on the nature and amount of group III metal.
Извор:
Chemistry of Materials, 2007, 19, 12, 2970-2981Издавач:
- Amer Chemical Soc, Washington
DOI: 10.1021/cm062912r
ISSN: 0897-4756
WoS: 000247094600010
Scopus: 2-s2.0-34347265762
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Yuzhakova, T. AU - Rakić, Vesna AU - Guimon, C. AU - Auroux, Aline PY - 2007 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/1491 AB - The present work is focused on the synthesis and characterization of ceria-based mixed oxides. Ceria was combined with the other oxides from group III, with the intention of improving the catalytic properties I of thus obtained materials. (B2O3, Al2O3, Ga2O3, In2O3)-CeO2 mixed oxides with a wide range of Me2O3 contents have been prepared by a coprecipitation route. The obtained solid materials have been characterized in terms of their structural, textural, and surface properties, including the acid-base and red-ox features, by a variety of techniques (BET, XRD, Raman, SEM, TG, TPR-TPO). The acid-base properties were estimated by the adsorption of probe molecules (NH3 and SOA investigated by the use of two techniques: microcalorimetry and XPS. The obtained materials exhibited satisfactory homogeneity; the highest surface areas were achieved for Al2O3-CeO2 mixed oxides. Only the fluorite structure of CeO2 was observed by XRD for all prepared mixed oxides, along with the presence of oxygen vacancies, which has been proven by Raman spectroscopy. Red-ox properties were investigated for In2O3-CeO2 samples. The degree of reduction decreased with In2O3 loading. Besides, the reduction -oxidation cycle, performed up to 830 degrees C, changed the morphology and structure of the samples irreversibly, leading to crystallization of In2O3. Among all investigated materials, only boria created significant acidity, whereas the basicity has been found to be dependent on the nature and amount of group III metal. PB - Amer Chemical Soc, Washington T2 - Chemistry of Materials T1 - Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts EP - 2981 IS - 12 SP - 2970 VL - 19 DO - 10.1021/cm062912r ER -
@article{ author = "Yuzhakova, T. and Rakić, Vesna and Guimon, C. and Auroux, Aline", year = "2007", abstract = "The present work is focused on the synthesis and characterization of ceria-based mixed oxides. Ceria was combined with the other oxides from group III, with the intention of improving the catalytic properties I of thus obtained materials. (B2O3, Al2O3, Ga2O3, In2O3)-CeO2 mixed oxides with a wide range of Me2O3 contents have been prepared by a coprecipitation route. The obtained solid materials have been characterized in terms of their structural, textural, and surface properties, including the acid-base and red-ox features, by a variety of techniques (BET, XRD, Raman, SEM, TG, TPR-TPO). The acid-base properties were estimated by the adsorption of probe molecules (NH3 and SOA investigated by the use of two techniques: microcalorimetry and XPS. The obtained materials exhibited satisfactory homogeneity; the highest surface areas were achieved for Al2O3-CeO2 mixed oxides. Only the fluorite structure of CeO2 was observed by XRD for all prepared mixed oxides, along with the presence of oxygen vacancies, which has been proven by Raman spectroscopy. Red-ox properties were investigated for In2O3-CeO2 samples. The degree of reduction decreased with In2O3 loading. Besides, the reduction -oxidation cycle, performed up to 830 degrees C, changed the morphology and structure of the samples irreversibly, leading to crystallization of In2O3. Among all investigated materials, only boria created significant acidity, whereas the basicity has been found to be dependent on the nature and amount of group III metal.", publisher = "Amer Chemical Soc, Washington", journal = "Chemistry of Materials", title = "Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts", pages = "2981-2970", number = "12", volume = "19", doi = "10.1021/cm062912r" }
Yuzhakova, T., Rakić, V., Guimon, C.,& Auroux, A.. (2007). Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts. in Chemistry of Materials Amer Chemical Soc, Washington., 19(12), 2970-2981. https://doi.org/10.1021/cm062912r
Yuzhakova T, Rakić V, Guimon C, Auroux A. Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts. in Chemistry of Materials. 2007;19(12):2970-2981. doi:10.1021/cm062912r .
Yuzhakova, T., Rakić, Vesna, Guimon, C., Auroux, Aline, "Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts" in Chemistry of Materials, 19, no. 12 (2007):2970-2981, https://doi.org/10.1021/cm062912r . .