AILaNb2O7: a new series of layered perovskites exhibiting ion exchange and intercalation behaviour

Gopalakrishnan, J. ; Bhat, Vasudeva ; Raveau, B. (1987) AILaNb2O7: a new series of layered perovskites exhibiting ion exchange and intercalation behaviour Materials Research Bulletin, 22 (3). pp. 413-417. ISSN 0025-5408

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002554...

Related URL: http://dx.doi.org/10.1016/0025-5408(87)90060-2

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.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Niobates; Perovskites; Lanthanium
ID Code:12747
Deposited On:10 Nov 2010 08:41
Last Modified:03 Jun 2011 05:54

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