Synthetic inorganic ion exchange materials XLVII. Preparation of a new crystalline antimonic acid HSbO3.O.12H2O

A new crystalline antimonic acid HSbO3.O.12H2O was prepared by Li+H+ ion exchange reaction with concentrated nitric acid solution from LiSbO3. The LiSbO3 was obtained by heating LiSb(OH)6 at 900°C. The LiSb(OH)6 was prepared by the addition of LiOH solution to a Sb(V) chloride solution at 60°C. X-ray diffraction pattern of HSbO3.O.12H2O was indexed to a monoclinic cell (space group P21m or P21) with a=8.676 Å, b=4.752 Å, c=5.263 Å and β=90.75°. This material showed equivalent exchange reaction of alkali metal ion to one proton per one antimony atom and a high ion exchange capacity for Li+ among the alkali metal nitrate solutions studied. This result suggests that lithium insertion/extraction reactions should lead to new types of lithium selective ion exchangers.