| 新型储氧、储氮材料——Ba掺杂的CeO2-ZrO2固溶体 |
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| 引用本文： | 杨柳,訾学红,戴洪兴,何洪.新型储氧、储氮材料——Ba掺杂的CeO2-ZrO2固溶体[J].工业催化,2009,17(2):65-69. |
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| 作者姓名： | 杨柳 訾学红 戴洪兴 何洪 |
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| 作者单位： | 北京工业大学环境与能源工程学院, 北京 100124 |
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| 基金项目： | 基金项目：国家高技术研究发展计划（863计划）基金项目（2006AA062347）;北京市自然科学基金重点项目（06C0002）;北京市属市管高等学校学术创新团队项目 |
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| 摘 要： | 利用“超声膜扩散法”制备了系列Ba掺杂的CeO2-ZrO2固溶体，研究了Ba掺杂对CeO2-ZrO2固溶体的热稳定性和储放氧能力的影响，并测量了Ba掺杂CeO2-ZrO2固溶体材料的储存NOx性能。结果表明，随着Ba含量的增加，固溶体的储氧量先增加后降低，在Ce0.5Zr0.5O2·xaO系列固溶体中，当x=0.16时，样品储氧量达到最大，新鲜样品的储氧量可达到745 μmol·g-1，样品的NO储量随含Ba量的增加而线性增加。
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| 关 键 词： | 催化剂工程 铈锆固熔体 钡掺杂 储氧材料 |
Ba-doped CeO2-ZrO2 solid solution： a novel O2 and NO storage material |
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| YANG Liu,ZI Xuehong,DAI Hongxing,HE Hong.Ba-doped CeO2-ZrO2 solid solution： a novel O2 and NO storage material[J].Industrial Catalysis,2009,17(2):65-69. |
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| Authors: | YANG Liu ZI Xuehong DAI Hongxing HE Hong |
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| Affiliation: | College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | Different Ce0.5Zr0.5O2 · xBaO solid solutions were prepared by ultrasound-assisted membrane reaction（UAMR） and characterized by XRD, BET, O2-TPD and NO-TPD. The oxygen and NO storage capability of the Ce0.5Zr0.5O2 · xBaO solid solutions was investigated. The results showed that the oxygen storage capability of the samples increased first and then declined with Ba loadings. Maximum oxygen storage capacity of 745 μmol · g^-1 was obtained over fresh Ce0.5Zr0.5O2 · 0. 16BaO solid solution calcined at 550 ℃. The NO storage capability increased linearly with Ba loadings. |
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| Keywords: | catalyst engineering CeO2-ZrO2 solid solution Ba doping oxygen storage material |
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