| 钙钛矿型LaNiO3、LaMnO3的形成条件 |
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| 引用本文： | 胡瑞生,沈岳年,王红宇,孙永安,白玉山. 钙钛矿型LaNiO3、LaMnO3的形成条件[J]. 物理化学学报, 1993, 9(3): 382-385. DOI: 10.3866/PKU.WHXB19930317 |
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| 作者姓名： | 胡瑞生 沈岳年 王红宇 孙永安 白玉山 |
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| 作者单位： | Inner Mongolia University, Hohhot 010021; Inner Mongolia Teachers' College, Tongliao 028043 |
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| 摘 要： | 用混合硝酸盐分解法和柠檬酸络合法分别制取了单一钙铁矿型多晶粉末LaNiO_3和LaMnO_3. XRD分析表明LaNiO_3的形成经历了混合氧化物转化为LaNiO_3的同相反应; 而LaMnO_3晶相直接由无定形相转化而来。根据DTA、TG、IR分析两者的形成, NO_3~-离子都起了重要作用. 同时讨论了络合剂柠檬酸的作用.
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| 关 键 词： | LaNiO3 LaMnO3 钙钛矿型晶体 XRD物相分析 热分析 |
| 收稿时间： | 1991-12-14 |
| 修稿时间： | 1992-09-15 |
STUDIES ON FORMATION CONDITIONS OF PEROVSKITE-TYPE OXIDES LaNiO_3 AND LaMnO_3 |
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| Hu Ruisheng Shen Yuenian Wang Hongyu. STUDIES ON FORMATION CONDITIONS OF PEROVSKITE-TYPE OXIDES LaNiO_3 AND LaMnO_3[J]. Acta Physico-Chimica Sinica, 1993, 9(3): 382-385. DOI: 10.3866/PKU.WHXB19930317 |
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| Authors: | Hu Ruisheng Shen Yuenian Wang Hongyu |
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| Affiliation: | Inner Mongolia University, Hohhot 010021; Inner Mongolia Teachers' College, Tongliao 028043 |
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| Abstract: | Single phase perovskite-type oxides,polycrystal powder LaNiO_3 and LaMnO_3,have been prepared by decomposing mixed nitrates and citric acid compexing methodsrespectively.X-ray powder diffraction analysis showed that the formation of LaNiO_3was caused by a solid reaction in which mixed oxides were converted into LaNiO_3;while LaMnO_3 was growing out of amorphous substance directly.By DTA,TG andIR etc.measurements,it was found that ion NO_3-took part in the formation ofLaNiO_3 and LaMnO_3.At the same time,the function of the complexing agent wasdiscussed.Citric acid favors fomation of single phase pevovskite-type oxides,especially in the case of LaMnO_3. |
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| Keywords: | LaNiO_3 LaMnO_3 Peovskite-type crystal X-ray powder diffraction Thermoanalysis |
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