Formation of oxygen deficient BaPbO3-x by oxalate decomposition
BaPbO3 is assumed to be oxygen deficient but the exact determination has never been reported. The aim of this study is to investigate the correlation between synthetic conditions and the resulting oxygen deficiency of BaPbO3‐x. The formation of BaPbO3‐x by decomposition of barium‐ and lead oxalate u...
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| Veröffentlicht in: | Crystal research and technology (1979) 2011-09, Vol.46 (9), p.906-910 |
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| container_title | Crystal research and technology (1979) |
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| creator | Franz, A. Klimm, D. Schmitz, W. Haferkorn, I. Bente, K. |
| description | BaPbO3 is assumed to be oxygen deficient but the exact determination has never been reported. The aim of this study is to investigate the correlation between synthetic conditions and the resulting oxygen deficiency of BaPbO3‐x. The formation of BaPbO3‐x by decomposition of barium‐ and lead oxalate up to 850 °C is significantly faster compared to conventional high temperature solid state reactions of oxide compounds. The discrete reaction steps were studied by simultaneous thermal analysis and X‐ray powder diffraction. The oxygen content was determined by temperature‐programmed reduction analysis. It is shown that the formation process is very sensitive to the chosen starting materials leading to different oxygen deficits caused by partial oxidation from Pb2+ to Pb4+. The resulting perovskites show chemical compositions of BaPbO2.74 and BaPbO2.82. The varying oxygen deficits should have an effect on structural properties. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
| doi_str_mv | 10.1002/crat.201000207 |
| format | Article |
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The aim of this study is to investigate the correlation between synthetic conditions and the resulting oxygen deficiency of BaPbO3‐x. The formation of BaPbO3‐x by decomposition of barium‐ and lead oxalate up to 850 °C is significantly faster compared to conventional high temperature solid state reactions of oxide compounds. The discrete reaction steps were studied by simultaneous thermal analysis and X‐ray powder diffraction. The oxygen content was determined by temperature‐programmed reduction analysis. It is shown that the formation process is very sensitive to the chosen starting materials leading to different oxygen deficits caused by partial oxidation from Pb2+ to Pb4+. The resulting perovskites show chemical compositions of BaPbO2.74 and BaPbO2.82. The varying oxygen deficits should have an effect on structural properties. (© 2011 WILEY‐VCH Verlag GmbH & Co. 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Technol</addtitle><description>BaPbO3 is assumed to be oxygen deficient but the exact determination has never been reported. The aim of this study is to investigate the correlation between synthetic conditions and the resulting oxygen deficiency of BaPbO3‐x. The formation of BaPbO3‐x by decomposition of barium‐ and lead oxalate up to 850 °C is significantly faster compared to conventional high temperature solid state reactions of oxide compounds. The discrete reaction steps were studied by simultaneous thermal analysis and X‐ray powder diffraction. The oxygen content was determined by temperature‐programmed reduction analysis. It is shown that the formation process is very sensitive to the chosen starting materials leading to different oxygen deficits caused by partial oxidation from Pb2+ to Pb4+. The resulting perovskites show chemical compositions of BaPbO2.74 and BaPbO2.82. The varying oxygen deficits should have an effect on structural properties. (© 2011 WILEY‐VCH Verlag GmbH & Co. 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Res. Technol</addtitle><date>2011-09</date><risdate>2011</risdate><volume>46</volume><issue>9</issue><spage>906</spage><epage>910</epage><pages>906-910</pages><issn>0232-1300</issn><eissn>1521-4079</eissn><abstract>BaPbO3 is assumed to be oxygen deficient but the exact determination has never been reported. The aim of this study is to investigate the correlation between synthetic conditions and the resulting oxygen deficiency of BaPbO3‐x. The formation of BaPbO3‐x by decomposition of barium‐ and lead oxalate up to 850 °C is significantly faster compared to conventional high temperature solid state reactions of oxide compounds. The discrete reaction steps were studied by simultaneous thermal analysis and X‐ray powder diffraction. The oxygen content was determined by temperature‐programmed reduction analysis. It is shown that the formation process is very sensitive to the chosen starting materials leading to different oxygen deficits caused by partial oxidation from Pb2+ to Pb4+. The resulting perovskites show chemical compositions of BaPbO2.74 and BaPbO2.82. The varying oxygen deficits should have an effect on structural properties. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</abstract><cop>Berlin</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/crat.201000207</doi><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 0232-1300 |
| ispartof | Crystal research and technology (1979), 2011-09, Vol.46 (9), p.906-910 |
| issn | 0232-1300 1521-4079 |
| language | eng |
| recordid | cdi_wiley_primary_10_1002_crat_201000207_CRAT201000207 |
| source | Wiley Online Library Journals Frontfile Complete |
| subjects | oxalate decomposition oxygen deficiency perovskite |
| title | Formation of oxygen deficient BaPbO3-x by oxalate decomposition |
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