THE PHASE SYSTEM AL2O3-P2O5-F-H2O AT 25-DEGREES-C

被引：1
|
作者：
FRAZIER, AW
WAERSTAD, KR
机构：
[1] Chemical Research Department, National Fertilizer and Environmental Research Center, Tennessee Valley Authority, Muscle Shoals
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1993年 / 32卷 / 08期
关键词：
D O I：
10.1021/ie00020a033
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The phase system Al2O3-P2O5-F-H2O at 25-degrees-C was determined. Invariant point and tie-line compositions for the isotherms are given for the following compounds: (1) Al2(HPO4)s.9H2O, (2) AlHPO4F.2H2O-A, (3) AlHPO4F.2H2O-B, (4) AlH2PO4F2.2H2O, (5) Al(H2PO4)2F, (6) AlH3-(PO4)2.3H2O, (7) AlH3(PO4)2.H2O, and (8) Al(H2PO4)3. Chemical and crystallographic data are given for these compounds and for AlH2P3O10.H2O, AlPO4.2H2O-C, and AlH2PO4F2, which were also encountered during this study. A comparison of the iron(III) phosphates and the application of these results to the physical and chemical stability of commercial wet-process phosphoric acid are discussed.
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页码：1760 / 1766
页数：7
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