ON THE THERMAL-DECOMPOSITION OF AMMONIUM FLUORO CHROMATES

被引：10

作者：

MENZ, DH ^{[1
]}

BENTRUP, U ^{[1
]}

机构：

[1] ZENT INST ANORGAN CHEM,RUDOWER CHAUSSEE 5,O-1199 BERLIN,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1992年 / 613卷 / 07期

关键词：

AMMONIUM AQUAPENTAFLUORO CHROMATE; AMMONIUM HEXAFLUORO CHROMATE; AMMONIUM HEXAQUO CHROMATE PENTAFLUORIDE; THERMAL DECOMPOSITION; THERMAL ANALYSIS; IR;

D O I：

10.1002/zaac.19926130119

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The thermal decomposition of the ammonium fluoro chromates (NH4)2[CrF5(H2O)], (NH4)3CrF6, and (NH4)2[Cr(H2O)6]F5 has been investigated by thermoanalytical and X-ray investigations. Steps of decomposition are the formation of (NH4)3CrF6 und NH4CrF4. Further the formation of a chromium fluoride ammoniate CrF3 . xNH3 (x less-than-or-equal-to 1) has been detected. The end product of decomposition is the rhomboedrical CrF3. The hydrolysis reactions have been suppressed by using quasi-isobaric conditions. As by-reaction a partial reduction of CrF3 has been detected leading to the formation of Cr2F5.

引用

页码：108 / 112

页数：5

共 13 条

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