Russian Journal of Applied Chemistry, 2013, Vol. 86, No. 4, pp. 482−487.
Pleiades Publishing, Ltd., 2013.
Original Russian Text © N.P. Kotsupalo, A.D. Ryabtsev, I.A. Poroshina, A.A. Kurakov, E.V. Mamylova, L.T. Menzheres, M.A. Korchagin, 2013, published
in Zhurnal Prikladnoi Khimii, 2013, Vol. 86, No. 4, pp. 518−524.
AND INDUSTRIAL INORGANIC CHEMISTRY
Effect of Structure on the Sorption Properties
of Chlorine-containing Form of Double Aluminum
N. P. Kotsupalo
, A. D. Ryabtsev
, I. A. Poroshina
, A. A. Kurakov
, E. V. Mamylova
L. T. Menzheres
, and M. A. Korchagin
Ekostar-Nautekh Private Company, Novosibirsk, Russia
Novosibirsk State Pedagogical University, Novosibirsk, Russia
Iinstitute of Solid State Chemistry and Mechanochemistry, Russian Academy of Sciences,
Siberian Branch, Novosibirsk, Russia
Received January 14, 2013
Abstract—The effect exerted by composition and speciﬁ c structural properties of commercial batches of granular
sorbent based on chlorine-containing form of double aluminum lithium hydroxide on its sorption properties in
lithium extraction from magnesium chloride brines was determined. Deﬁ ciency in lithium chloride in the sorbent
structure and structural defects are responsible for the selectivity of granular sorbent. It was shown that sorbent
is selective for lithium even in the presence of high concentrations of magnesium chloride in brine and the borate
ions exhibit adverse effect on the technological process.
Several methods exists for producing chlorine-
containing form of double aluminum lithium hydroxide,
O (DGAL-Cl), by intercalation of
lithium chloride into Al(OH)
layered structure. It was
shown [1, 2] that sorption properties of DGAL-Cl depend
on preparation conditions.
The study of DGAL-Cl formation from crystalline
aluminum hydroxide (gibbsite) showed that intercalation
of LiCl into Al(OH)
layered structure precedes
disordering of Al–OH layers in the areas where Al(OH)
and LiCl phases are in contact [3–5]. The intercalation
process intensiﬁ es when Al(OH)
is in the form of defect
matrix obtained by chemical or mechanochemical
method [1, 3]. In this case, a compound obtained has
defect structure of the initial compound. This compound
is suitable for reversible intercalation of LiCl from salt
media (sorption) and its deintercalation (desorption)
in subsequent treatment with water. This property of
DGAL-Cl and presence of structural defects were used
for preparing reversible sorbents for selective removal of
lithium from multicomponent salt systems [2, 4].
Efﬁ cient methods are available for the preparation and
granulation of DGAL-Cl with structural defects [6–9].
These methods were used to develop industrial sorbent
technology and equipment for sorption treatment of
multicomponent natural brine to remove lithium [10–12].
Along with this, the behavior of other cations, especially
whose ionic radius is close to Li
, present in the
brine and their effect on its enrichment in lithium was
determined. It made it possible to eliminate the arising
hypotheses about the possibility of Mg
DGAL-Cl containing structural defects.
In the study, the composition and structure of industrial
granular sorbent were determined and the properties of the
DGAL-Cl granular sorbent containing structural defects
were studied in selective removal of lithium chloride in
the form of its aqueous solution from natural lithium-
bearing magnesium chloride brains under industrial