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Water of Hydration in the System Fe–O
Author(s) -
BERG T. G. OWE
Publication year - 1961
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1961.tb13727.x
Subject(s) - crucible (geodemography) , stoichiometry , hydroxide , chemistry , oxygen , phase diagram , atmospheric temperature range , water of crystallization , inorganic chemistry , phase (matter) , analytical chemistry (journal) , mineralogy , environmental chemistry , thermodynamics , organic chemistry , physics , computational chemistry
Fe or Fe + Fe 2 O 3 was heated in a stream of carefully dried oxygen, and the amount of water carried by the gas was determined as a function of time and temperature in the range 300° to 1100°C. Water was evolved as a result of a reaction with the crucible. This water was absorbed by FeO when FeO was present, and was released when the FeO was converted to Fe 3 O 4 . The apparent excess of O or deficit of Fe in FeO, reported in the literature, therefore may be due to the presence of water or hydroxide in the FeO. The other oxides, which occur in the phase diagram with exact stoichiometry, absorbed and held much less water, if any.