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

共 37 条

[21]

PANNATIER G, 1964, B SOC CHIM FR, V5, P609

[22] A TECHNIQUE FOR THE CONTINUOUS DETERMINATION OF RATES OF TRANSPORT - EXPERIMENTS ON THE SYSTEMS GEO2/WO2/H2O AND NISO4/PBSO4/PBCL2 [J].

PLIES, V ;

KOHLMANN, T ;

GRUEHN, R .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1989, 568 (01) :62-72

[23] CHEMICAL VAPOR TRANSPORT OF SCNBO4 WITH CL2 OR NBCL5/CL2 - EXPERIMENTS AND CALCULATIONS [J].

ROSS, R ;

GRUEHN, R .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1990, 591 (12) :95-106

[24] REFINEMENT OF STRUCTURE OF ALPHA-FESO4 [J].

SAMARAS, D ;

COINGBOY.J .

BULLETIN DE LA SOCIETE FRANCAISE MINERALOGIE ET DE CRISTALLOGRAPHIE, 1970, 93 (02) :190-&

[25] THERMODYNAMIC STABILITY OF PD6CL12, PD6BR12, AND PT6CL12 MOLECULES [J].

SCHAFER, H .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1975, 415 (03) :217-224

[26] CHEMICAL-TRANSPORT OF PLATINUM WITH CHLORINE [J].

SCHAFER, H .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1974, 410 (03) :269-273

[27] EQUILIBRIA BETWEEN PLATINUM AND CHLORINE WITHIN TEMPERATURE-RANGE FROM 973 TO 1373 K [J].

SCHAFER, H ;

WOSIEWITZ, U .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1975, 415 (03) :202-216

[28] CHEMICAL TRANSPORT AND SOLUBILITY OF SOLID IN GAS-PHASE [J].

SCHAFER, H .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1973, 400 (03) :242-252

[29] PREPARATION AND STRUCTURE OF NEW CETA3O9 MODIFICATIONS [J].

SCHAFFRATH, U ;

GRUEHN, R .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1988, 565 (10) :67-80

[30] SYNTHESIS AND STRUCTURE OF TH2TA2O9 [J].

SCHMIDT, G ;

GRUEHN, R .

JOURNAL OF THE LESS-COMMON METALS, 1989, 156 :75-86

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