AILaNb2O7: A new series of layered perovskites exhibiting ion exchange and intercalation behaviour
J Gopalakrishnan, V Bhat, B Raveau - Materials research bulletin, 1987 - Elsevier
J Gopalakrishnan, V Bhat, B Raveau
Materials research bulletin, 1987•ElsevierA new series of layered perovskite oxides, AI LaNb 2 O 7 (A= Li, Na, K, Rb, Cs, NH 4)
constituting n= 2 members of the family AA′ n− 1 B n O 3n+ 1, has been prepared. Their
structure consists of double perovskite slabs interleaved by A atoms. Hydrated HLaNb 2 O 7
is formed by topotactic proton exchange of the A atoms in ALaNb 2 O 7 (A= K, Rb, Cs). The
hydrate readily loses water to give anhydrous HLaNb 2 O 7 which is isostructural with
RbLaNb 2 O 7. HLaNb 2 O 7 exhibits Bronsted acidity forming intercalation compounds with …
constituting n= 2 members of the family AA′ n− 1 B n O 3n+ 1, has been prepared. Their
structure consists of double perovskite slabs interleaved by A atoms. Hydrated HLaNb 2 O 7
is formed by topotactic proton exchange of the A atoms in ALaNb 2 O 7 (A= K, Rb, Cs). The
hydrate readily loses water to give anhydrous HLaNb 2 O 7 which is isostructural with
RbLaNb 2 O 7. HLaNb 2 O 7 exhibits Bronsted acidity forming intercalation compounds with …
Abstract
A new series of layered perovskite oxides, AILaNb2O7 (A = Li, Na, K, Rb, Cs, NH4) constituting n = 2 members of the family A A′n−1BnO3n+1, has been prepared. Their structure consists of double perovskite slabs interleaved by A atoms. Hydrated HLaNb2O7 is formed by topotactic proton exchange of the A atoms in ALaNb2O7 (A = K, Rb, Cs). The hydrate readily loses water to give anhydrous HLaNb2O7 which is isostructural with RbLaNb2O7. HLaNb2O7 exhibits Bronsted acidity forming intercalation compounds with bases such as n-octylamine and pyridine.
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