| Me-NaHCO3-NH3-H2O体系和Me-NaOH-NaHCO3-H2O体系的热力学分析 |
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| 引用本文： | 周小兵,代建清,陈 辉,蔡进红.Me-NaHCO3-NH3-H2O体系和Me-NaOH-NaHCO3-H2O体系的热力学分析[J].无机化学学报,2009,25(4):602-608. |
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| 作者姓名： | 周小兵 代建清 陈 辉 蔡进红 |
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| 作者单位： | 昆明理工大学材料与冶金工程学院,昆明,650093 |
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| 基金项目： | 云南省中青年学术技术带头人后备人才培养项目 |
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| 摘 要： | 通过对Me(Fe2+,Ni2+,Cu2+,Zn2+)-NaHCO3-NH3-H2O体系以及Me-NaOH-NaHCO3-H2O体系的热力学分析,得到各金属离子总浓度cMe与pH值的关系,确定了2种体系的完全共沉淀区域.热力学分析结果表明:在Me-NaHCO3-NH3-H2O体系中,Ni2+,Cu2+,Zn2+这3种离子和氨的配位能力很强.当总碳的浓度cC=1 mol·L-1且总氮的浓度cN=0.01 mol·L-1时,在pH=7.5～11范围内可实现完全共沉淀:当cN=0.05 mol·L-1且cC=3 mol·L-1时,在pH=70.5时可实现完全沉淀,但共沉淀范围较窄,不利于铁氧体组分的精确控制.在Me-NaOH-NaHCO3-H2O体系中,共沉淀区域由cC决定,当cC=1 mol·L-1,pH=7.5～11时可实现完全共沉淀.
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| 关 键 词： | 镍铜锌铁氧体 化学共沉淀 热力学分析 |
Thermodynamic Analysis on the Me-NaHCO3-NH3-H2O and Me-NaOH-NaHCO3-H2O Systems |
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| ZHOU Xiao-Bing,DAI Jian-Qing,CHEN Hui and CAI Jin-Hong.Thermodynamic Analysis on the Me-NaHCO3-NH3-H2O and Me-NaOH-NaHCO3-H2O Systems[J].Chinese Journal of Inorganic Chemistry,2009,25(4):602-608. |
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| Authors: | ZHOU Xiao-Bing DAI Jian-Qing CHEN Hui and CAI Jin-Hong |
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| Institution: | Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093,Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093,Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093 and Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093 |
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| Abstract: | |
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| Keywords: | nickel copper zinc ferrite chemical co-precipitation thermodynamic analysis |
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