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(01): 70-75.
doi:
10.3866/PKU.WHXB20000114
Citation: Cui Jin-Lan, Zhang Yi, Liu Chang-Jian. Phase Diagrams of Na2CrO4-(NH4)2CrO4-H2O System[J]. Acta Physico-Chimica Sinica, 2000, 16(01): 70-75. doi: 10.3866/PKU.WHXB20000114
Citation: Cui Jin-Lan, Zhang Yi, Liu Chang-Jian. Phase Diagrams of Na2CrO4-(NH4)2CrO4-H2O System[J]. Acta Physico-Chimica Sinica, 2000, 16(01): 70-75. doi: 10.3866/PKU.WHXB20000114
English
Phase Diagrams of Na2CrO4-(NH4)2CrO4-H2O System
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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Key words:
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Phase diagram
- / Separation
- / Ammonium chromate
- / Double salt
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