A/sup I/LaNb/sub 2/O/sub 7/: A new series of layered perovskites exhibiting ion exchange and intercalation behaviour

Journal Article · Sun Mar 01 00:00:00 EST 1987 · Mater. Res. Bull.; (United States)

DOI:https://doi.org/10.1016/0025-5408(87)90060-2· OSTI ID:6805139

Gopalakrishnan, J; Bhat, V; Raveau, B

A new series of layered perovskite oxides, A/sup I/LaNb/sub 2/O/sub 7/ (A = Li, Na, K, Rb, Cs, NH/sub 4/) constituting n = 2 members of the family A A/sub n-1/B/sub n/O/sub 3n+1/, has been prepared. Their structure consists of double perovskite slabs interleaved by A atoms. Hydrated HLaNb/sub 2/O/sub 7/ is formed by topotactic proton exchange of the A atoms in ALaNb/sub 2/O/sub 7/ (A = K, Rb, Cs). The hydrate readily loses water to give anhydrous HLaNb/sub 2/O/sub 7/ which is isostructural with RbLaNb/sub 2/O/sub 7/. HLaNb/sub 2/O/sub 7/ exhibits Bronsted acidity forming intercalation compounds with bases such as n-octylamine and pyridine.

• Research Organization: Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012
• OSTI ID: 6805139
• Journal Information: Mater. Res. Bull.; (United States), Vol. 22:3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PEROVSKITES
CHEMICAL PREPARATION
ION EXCHANGE
STRUCTURAL CHEMICAL ANALYSIS
AMINES
CESIUM OXIDES
CHEMICAL COMPOSITION
CLATHRATES
HYDRATES
HYDRATION
HYDROXIDES
LITHIUM OXIDES
NIOBATES
OCTYL RADICALS
PH VALUE
POTASSIUM OXIDES
PYRIDINES
RUBIDIUM OXIDES
SODIUM OXIDES
ALKALI METAL COMPOUNDS
ALKYL RADICALS
AZINES
CESIUM COMPOUNDS
CHALCOGENIDES
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
LITHIUM COMPOUNDS
NIOBIUM COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
RADICALS
REFRACTORY METAL COMPOUNDS
RUBIDIUM COMPOUNDS
SODIUM COMPOUNDS
SOLVATION
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
360602* - Other Materials- Structure & Phase Studies
360601 - Other Materials- Preparation & Manufacture