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Cobalt Reactions with Montmorillonite
Author(s) -
Hodgson J. F.
Publication year - 1960
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1960.03615995002400030013x
Subject(s) - montmorillonite , chemisorption , cobalt , chemistry , inorganic chemistry , monolayer , precipitation , acetic acid , adsorption , catalysis , organic chemistry , biochemistry , physics , meteorology
Specific reactions between montmorillonite and Co in low concentrations were studied in the presence of excess CaCl 2 . Two forms of bound Co were distinguished. One form, characterized as being slowly dissociable, appears to be bound in a monolayer by chemisorption and will exchange with Cu ++ , Zn ++ , or other Co ++ and to a lesser extent with ions of other transition metals but not with Ca ++ , Mg ++ , or NH 4 + . A second form of Co did not dissociate and could not be extracted from the mineral with 2.5% acetic acid. This fraction, which was not characterized, is thought to either enter the crystal lattice or be occluded in the precipitation of another phase.