| 三种络合剂对LaFeO3晶体形成的影响 |
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| 引用本文： | 胡瑞生,段毅文,沈岳年,贾美林. 三种络合剂对LaFeO3晶体形成的影响[J]. 物理化学学报, 1999, 15(6): 541-544. DOI: 10.3866/PKU.WHXB19990611 |
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| 作者姓名： | 胡瑞生 段毅文 沈岳年 贾美林 |
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| 作者单位： | Department of Chemistry,Inner Mongolla University,010021 Huhhot,Department of Chemistry,Inner Mongolia Normal University 010022,Huhhot |
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| 摘 要： | 稀土钙钛矿型复合氧化物LaFeo。由于其独特的晶体结构和优良的吸附性能，近年来在催化及气敏领域都显示出了较好的应用前景”，’‘．然而有关LaFe03的合成方法及形成过程的研究，特别是各种络合剂对LaFeo。形成的影响，目前文献报导尚不多．本文将采用直接硝酸盐分解法和加入络合剂的硝酸盐分解法，研究和比较柠檬酸、醋酸，EDTA三种络合剂对LaFe03晶相形成的影响．1实验部分1．五样品制备样品制备分别采用混合硝酸盐分解法和络合分解法，混合硝酸盐分解法是用分析纯试剂La（＊0。）。·6认O，似＊O小·9o0，按La：Fe＝1：1的比例配…
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| 关 键 词： | 钙钛矿型氧化物 稀土 络合剂 |
| 收稿时间： | 1997-11-04 |
| 修稿时间： | 1998-03-27 |
Effects of Adding Various Complexing Agents on the Formation of Single Phase LaFeO3 |
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| Hu Ruisheng,Duan Yiwen,Shen Yuenian,Jia Meilin. Effects of Adding Various Complexing Agents on the Formation of Single Phase LaFeO3[J]. Acta Physico-Chimica Sinica, 1999, 15(6): 541-544. DOI: 10.3866/PKU.WHXB19990611 |
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| Authors: | Hu Ruisheng Duan Yiwen Shen Yuenian Jia Meilin |
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| Affiliation: | Department of Chemistry,Inner Mongolla University,010021 Huhhot|Department of Chemistry,Inner Mongolia Normal University 010022,Huhhot |
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| Abstract: | In this paper,polycrystalline powders of LaFeO3 have been prepared by the decomposation of mixed nitrates with and without various complexing agents respectively.The phase changes at different temperatures have been investigated by XRD,TG,DTA and IR.The effects of adding complexing agent,citric acid,HAC and EDTA,on the formation of single phase LaFeO3 have been discussed.The formation of single phase perovskite-type LaFeO3 are favoured by adding various complexing agents.The favourable order for the formations of LaFeO3 is that citric acid> HAC≈ EDTA. |
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| Keywords: | Perovskitd-type oxides Rare earths Complexing agent |
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