| 非晶态配合物法制备钙钛矿型纳米粉体催化剂及其CO催化氧化性能 |
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| 引用本文： | 王海,朱永法,谭瑞琴,曹立礼. 非晶态配合物法制备钙钛矿型纳米粉体催化剂及其CO催化氧化性能[J]. 化学学报, 2003, 61(1): 13-16 |
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| 作者姓名： | 王海 朱永法 谭瑞琴 曹立礼 |
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| 作者单位： | 1. 清华大学,化学系,北京,100084
2. 清华大学,一碳化工国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金(No.20071021)和教育部优秀青年教师资助计划资助. |
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| 摘 要： | 运用非晶态配合物法合成了LaCoO3,La0.9Sr0.1CoO3,LaCo0.3Mn0.7O3和 La2CuO4钙钛矿型纳米粉体催化剂，研究了其CO催化化活性及SO2中毒性能，初步推 断了中毒机理。结果表明用该方法可以在较低下合成具有纯钙钛矿结构的纳米粉体 催化剂，该催化剂具有很好的CO催化化活性，其中LaCoO3系列的催化活性优于 La2CuO4，所有催化剂经SO2中毒后催化活性均有所下降。研究表明钙钛矿结构的破 坏是硫中毒失活的主要原因。
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| 关 键 词： | 一氧化碳 非晶态固体 固态配合物 制备 纳米相材料 超细粉末 钙钛矿型结构 催化 氧化 二氧化硫 |
| 修稿时间： | 2002-06-24 |
Synthesis of Nanosized Perovskite Powder Using Amorphous Complex Method and Their CO Catalytic Oxidation Performance |
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| Affiliation: | Department of Chemistry.Beijing(100084);State Key C1 Chemical Engineering Laboratory, Tsinghua University.Bejing(100084) |
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| Abstract: | The nanosized perovskite powders of LaCoO_3, La_ 0.9Sr_ 0.1CoO_3, LaCo_ 0.3Mn_ 0.7O_3 and La_2CuO_4 were prepared via amorphous heteronuclear complex precursor at a fairly low temperature. The catalytic performances for CO oxidation of the catalysts have been tested. The results show that the nanosized catalysts have excellent CO catalytic abilities and the LaCoO_3 series has better performance than that of the La_2CuO_4 catalyst. The catalytic performance decreased after the catalyst was poisoned by SO_2. The destruction of the perovskite structure was probably the main reason of deactivation. |
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| Keywords: | amorphous complex perovskite catalysts CO catalytic oxidation SO_2 poisoning |
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