Thermochemistry of a new class of materials containing dinitrogen pairs in an oxide matrix

Franck Tessier; Laurent Le Gendre; François Cheviré; Roger Marchand; Alexandra Navrotsky

doi:10.1021/cm050402b

Thermochemistry of a new class of materials containing dinitrogen pairs in an oxide matrix

Franck Tessier, Laurent Le Gendre, François Cheviré, Roger Marchand, Alexandra Navrotsky

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45 Scopus citations

Abstract

A series of N ₂-containing perovskite phases was prepared in the La-(Ba)-Ti-O system in order to study the dinitrogen retention phenomenon from a thermochemical viewpoint. High-temperature oxide melt solution calorimetry was undertaken to determine the energetics of the corresponding starting oxynitrides, intermediate phases, and oxides. Calorimetric results show that nitrogen is weakly bound within the oxide matrix and most of the enthalpy of oxidation of the intermediate phase is devoted to its structure change between the starting perovskite structure and the formation of a layered-perovskite La ₂Ti ₂O ₇ oxide.

Original language	English (US)
Pages (from-to)	3570-3574
Number of pages	5
Journal	Chemistry of Materials
Volume	17
Issue number	13
DOIs	https://doi.org/10.1021/cm050402b
State	Published - Jun 28 2005
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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title = "Thermochemistry of a new class of materials containing dinitrogen pairs in an oxide matrix",

abstract = "A series of N 2-containing perovskite phases was prepared in the La-(Ba)-Ti-O system in order to study the dinitrogen retention phenomenon from a thermochemical viewpoint. High-temperature oxide melt solution calorimetry was undertaken to determine the energetics of the corresponding starting oxynitrides, intermediate phases, and oxides. Calorimetric results show that nitrogen is weakly bound within the oxide matrix and most of the enthalpy of oxidation of the intermediate phase is devoted to its structure change between the starting perovskite structure and the formation of a layered-perovskite La 2Ti 2O 7 oxide.",

author = "Franck Tessier and Gendre, {Laurent Le} and Fran{\c c}ois Chevir{\'e} and Roger Marchand and Alexandra Navrotsky",

year = "2005",

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doi = "10.1021/cm050402b",

language = "English (US)",

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T1 - Thermochemistry of a new class of materials containing dinitrogen pairs in an oxide matrix

AU - Tessier, Franck

AU - Gendre, Laurent Le

AU - Cheviré, François

AU - Marchand, Roger

AU - Navrotsky, Alexandra

PY - 2005/6/28

Y1 - 2005/6/28

N2 - A series of N 2-containing perovskite phases was prepared in the La-(Ba)-Ti-O system in order to study the dinitrogen retention phenomenon from a thermochemical viewpoint. High-temperature oxide melt solution calorimetry was undertaken to determine the energetics of the corresponding starting oxynitrides, intermediate phases, and oxides. Calorimetric results show that nitrogen is weakly bound within the oxide matrix and most of the enthalpy of oxidation of the intermediate phase is devoted to its structure change between the starting perovskite structure and the formation of a layered-perovskite La 2Ti 2O 7 oxide.

AB - A series of N 2-containing perovskite phases was prepared in the La-(Ba)-Ti-O system in order to study the dinitrogen retention phenomenon from a thermochemical viewpoint. High-temperature oxide melt solution calorimetry was undertaken to determine the energetics of the corresponding starting oxynitrides, intermediate phases, and oxides. Calorimetric results show that nitrogen is weakly bound within the oxide matrix and most of the enthalpy of oxidation of the intermediate phase is devoted to its structure change between the starting perovskite structure and the formation of a layered-perovskite La 2Ti 2O 7 oxide.

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JO - Chemistry of Materials

JF - Chemistry of Materials

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ER -

Thermochemistry of a new class of materials containing dinitrogen pairs in an oxide matrix

Abstract

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