CONTRIBUTIONS ON THE THERMAL-BEHAVIOR OF SULFATES .7. THE CHEMICAL VAPOR TRANSPORT OF FESO4 WITH NH4CL AND FE2(SO4)3 WITH CL2 OR NH4CL - EXPERIMENTS AND CALCULATIONS

被引：10

作者：

DAHMEN, T ^{[1
]}

GRUEHN, R ^{[1
]}

机构：

[1] UNIV GIESSEN,INST ANORGAN & ANALYT CHEM,HEINRICH BUFF RING 58,W-6300 GIESSEN,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1992年 / 609卷 / 03期

关键词：

CHEMICAL TRANSPORT; FESO4; FE2(SO4)3;

D O I：

10.1002/zaac.19926090325

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Well shaped crystals of FeSO4 and Fe2(SO4)3 can be grown by CVT (T1 less-than-or-equal-to 650-degrees-C). We investigated the dependence of the transport rate on the concentration of the transport agent (Fe2(SO4)3/Cl2 and Fe2(SO4)3/NH4Cl) as well as on the temperature (FeSO4/NH4Cl and Fe2(SO4)3/Cl2). Using DELTA(f)H298-degrees-(FeSO4) = - 220 kcal/mol, C(p)(T) = 30.1 + 9.9 X 10(-3) x T and DELTA(f)H298-degrees-(Fe2(SO4)3) = - 615.4 kcal/mol a satisfying agreement between thermodynamical calculations and experimental results can be reached.

引用

页码：139 / 149

页数：11

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