| Na2CrO4-(NH4)2CrO4-H2O体系的相图 |
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| 引用本文： | 崔金兰,张懿,刘昌见.Na2CrO4-(NH4)2CrO4-H2O体系的相图[J].物理化学学报,2000,16(1):70-75. |
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| 作者姓名： | 崔金兰 张懿 刘昌见 |
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| 作者单位： | Institute of Chemical Metallurgy,Chinese Academy of Sciences,Beijing 100080 |
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| 基金项目： | 中国科学院“九·五”资源环境特别支持项目!KZ95T．05 |
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| 摘 要： | 铬盐工业是无机盐工业的一个主要分支，其主要产品有重铬酸钠、铬酸酐、铬酸铵、氧化铬等，广泛用于合金材料、电镀、制革、印染、橡胶等部门，是国民经济中重要的基础化工原料工业．铬盐生产系先将铬铁矿制成铬酸钠及重铬酸钠，然后再进一步加工制成其它铬盐产品．在铬盐...
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| 关 键 词： | 相图 分离 铬酸铵 复盐 |
| 收稿时间： | 1999-03-09 |
| 修稿时间： | 1999-05-12 |
Phase Diagram of Na_2CrO_4- (NH_4 )_2CrO_4-H_2O System |
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| Cui Jinlan, Zhang Yi, Liu Changjian.Phase Diagram of Na_2CrO_4- (NH_4 )_2CrO_4-H_2O System[J].Acta Physico-Chimica Sinica,2000,16(1):70-75. |
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| Authors: | Cui Jinlan Zhang Yi Liu Changjian |
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| Institution: | Institute of Chemical Metallurgy,Chinese Academy of Sciences,Beijing 100080 |
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| Abstract: | The phase diagrams of Na_2CrO_4- (NH_4)_2CrO_4-H_2O system at 20℃ and 50℃ have been determined by solubility method. The experimental results have also been verified by mathematical method. The phase diagrams show that there is a double salt of NaNH_4Cro_4• 2H_2O formed in the system, which will decrease the purity of (NH_4)_2CrO_4 Consequently, a method is found to separate the fixture of ammonium chromate and double salt by analysing the phase diagrams. |
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| Keywords: | Phase diagram Separation Ammonium chromate Double salt |
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