THE THERMAL-BEHAVIOR OF ALUMINUM FLUORIDEHYDROXIDE HYDRATE ALF2.3(OH)0.7(H2O)

被引：28

作者：

MENZ, DH ^{[1
]}

MENSING, C ^{[1
]}

HONLE, W ^{[1
]}

VONSCHNERING, HG ^{[1
]}

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 1,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1992年 / 611卷 / 05期

关键词：

ALUMINUM FLUORIDEHYDROXIDE HYDRATE; THERMAL BEHAVIOR; DECOMPOSITION REACTIONS; GAS COMPLEXES; HA1F4; H2A1F5; THERMAL ANALYSIS; EVOLVED GAS ANALYSIS; MASS SPECTROSCOPY;

D O I：

10.1002/zaac.19926110519

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The thermal decomposition of AlF2.3(OH)0.7(H2O) depends strongly on the partial pressure of the gaseous reaction products and proceeds in three overlapping steps, namely dehydratation, formation of x-ray amorphous Al2O3 and metastable beta-AlF3, and formation of alpha-AlF3 and alpha-Al2O3. Beside that an exchange of F/OH takes place. The vaporization is mainly determined by the crucible type and pressure conditions, as shown by simultaneous TG-MS measurements too. Main gaseous species are H2O and HF. The gas complexes HAlF4 and H2AlF5 are observed.

引用

页码：107 / 113

页数：7

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