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Formation and Crystallization of Fe III Hydroxides. Effects of precipitation temperature and the nature of starting Fe III salt on the properties of Fe III hydroxides prepared in weakly acidic medium
Author(s) -
Šolcová A.,
Šubrt J.,
Hanousek F.,
Bechinê K.,
Zapletal V.,
Zolotovskii B. P.,
Krivoruchko O. P.,
Buyanov R. A.,
Lipka J.
Publication year - 1985
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19855260724
Subject(s) - salt (chemistry) , precipitation , crystallization , thermal decomposition , amorphous solid , hydrothermal circulation , layered double hydroxides , chemistry , decomposition , inorganic chemistry , mother liquor , chemical engineering , hydroxide , crystallography , organic chemistry , physics , meteorology , engineering
Amorphous Fe III hydroxides prepared at pH = 6 differ from analogous precipitates obtained in alkaline media in that they have an increased content of anions bound in their structures, and crystallize less readily both in dry thermal treatment and under hydrothermal conditions. The shapes of DTA curves obtained for freshly prepared gels and for products of ageing in mother liquor are discussed, and the effect of the anions present on the course of thermal decomposition is assessed.