Synthesis, characterization and thermal decomposition of double sulfates of trivalent Al and Fe with di- or triethanolammonium monovalent cations

被引：7

作者：

Jordanovska, V

Trojko, R

Boyanov, B

机构：

[1] RUDJER BOSKOVIC INST,ZAGREB 41001,CROATIA

[2] PAISIJ HILENDARSKI UNIV PLOVDIV,FAC CHEM,BU-4025 PLOVDIV,BULGARIA

来源：

THERMOCHIMICA ACTA | 1996年 / 275卷 / 02期

关键词：

double sulfates of Al(III) and Fe(III) with di- or triethanolammonium synthesis; thermal studies;

D O I：

10.1016/0040-6031(95)02675-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

By evaporation of an aqueous mixture of M(III) sulfate and diethanolammonium sulfate or triethanolammonium sulfate in the presence of sulfuric acid, double sulfates of Al(III) and Fe(III) were obtained. The stoichiometries of the compounds obtained were determined by means of elemental and TG analyses. It was found that they have the following general formulae: Al(HOCH2CH2)(2)NH2(SO4)(2) . 6H(2)O; Al(HOCH2CH2)(3)NH(SO4)(2) . 6H(2)O; Fe(HOCH2CH2)(2) NH2(SO4)(2) . 4H(2)O; Fe(HOCH2CH2)(3)NH(SO4)(2) . 6H(2)O. From the X-ray powder diffraction patterns, it was concluded that the investigated compounds have different crystal structures. It was also established, from the TG curves, that they lose water at low temperature and also that the anhydrous double salts decompose at low temperature (at about 523 K).

引用

页码：301 / 311

页数：11

共 11 条

[1]

DUVAL C, 1963, INORGANIC THERMOGRAV, P230

[2] STRUCTURES OF DIMETHYLAMMONIUM METAL(III) SULFATE HEXAHYDRATES (METAL=AL,CR) [J].