On the existence of hydrotalcite-like phases in the absence of trivalent cations
PV Kamath, GHA Therese, J Gopalakrishnan - Journal of Solid State …, 1997 - Elsevier
PV Kamath, GHA Therese, J Gopalakrishnan
Journal of Solid State Chemistry, 1997•Elsevierα-Hydroxides of nickel (II) and cobalt (II) are hydrotalcite-like phases, possessing a layered
double hydroxide (LDH) structure even though there are no trivalent cations in the lattice.
While the LDHs acquire a positive charge on the hydroxide layers by the incorporation of
trivalent cations, we suggest that the α-hydroxides acquire a positive charge by partial
protonation of the hydroxyl ions according to the equationM (OH) 2+ xH+→[M (OH) 2− x
(H2O) x] x+. As in the LDHs, charge balance is restored by the incorporation of anions in the …
double hydroxide (LDH) structure even though there are no trivalent cations in the lattice.
While the LDHs acquire a positive charge on the hydroxide layers by the incorporation of
trivalent cations, we suggest that the α-hydroxides acquire a positive charge by partial
protonation of the hydroxyl ions according to the equationM (OH) 2+ xH+→[M (OH) 2− x
(H2O) x] x+. As in the LDHs, charge balance is restored by the incorporation of anions in the …
α-Hydroxides of nickel(II) and cobalt(II) are hydrotalcite-like phases, possessing a layered double hydroxide (LDH) structure even though there are no trivalent cations in the lattice. While the LDHs acquire a positive charge on the hydroxide layers by the incorporation of trivalent cations, we suggest that the α-hydroxides acquire a positive charge by partial protonation of the hydroxyl ions according to the equationM(OH)2+xH+→[M(OH)2−x(H2O)x]x+.As in the LDHs, charge balance is restored by the incorporation of anions in the interlayer region.
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