Synthesis, characterization and thermal decomposition of double sulfates of trivalent Al and Fe with di- or triethanolammonium monovalent cations
作者:V. Jordanovska、R. Trojko、B. Boyanov
DOI:10.1016/0040-6031(95)02675-4
日期:1996.4
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(HOCH 2 CH 2 ) 2 NH 2 (SO 4 ) 2 ·6H 2 O; Al(HOCH 2 CH 2 ) 3 NH(SO
摘要 通过在硫酸存在下蒸发M(III)硫酸盐和二乙醇硫酸铵或三乙醇硫酸铵的含水混合物,得到Al(III)和Fe(III)的双硫酸盐。所得化合物的化学计量通过元素和TG分析确定。发现它们具有以下通式: Al(HOCH 2 CH 2 ) 2 NH 2 (SO 4 ) 2 ·6H 2 O;Al(HOCH 2 CH 2 ) 3 NH(SO 4 ) 2 ·6H 2 O;Fe(HOCH 2 CH 2 ) 2 NH 2 (SO 4 ) 2 ·4H 2 O;Fe(HOCH 2 CH 2 ) 3 NH(SO 4 ) 2 ·6H 2 O。从X射线粉末衍射图可以得出结论,所研究的化合物具有不同的晶体结构。从 TG 曲线还确定,它们在低温下失水,并且无水复盐在低温下(约 523 K)分解。