Mechanism of thermal decomposition of yttrium nitrate hexahydrate, Y(NO3)(3)center dot 6H(2)O and modeling of intermediate oxynitrates | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

1557720

Reference Type

Journal Article

Title

Mechanism of thermal decomposition of yttrium nitrate hexahydrate, Y(NO3)(3)center dot 6H(2)O and modeling of intermediate oxynitrates

Author(s)

Melnikov, P; Nascimento, VA; Consolo, LZZ; Silva, AF

Year

2013

Is Peer Reviewed?

Journal

Journal of Thermal Analysis and Calorimetry
ISSN: 1388-6150
EISSN: 1588-2926

Volume

111

Issue

Page Numbers

115-119

DOI

10.1007/s10973-012-2236-3

Web of Science Id

WOS:000313207400016

Abstract

The thermal decomposition of yttrium nitrate hexahydrate Y
(NO3)(3)center dot 6H(2)O is a complex condensation process generating a tetramer arrangement
Y4O4(NO3)(4) formed by alternating yttrium and oxygen atoms. The anions NO3 (-) attach themselves
to the yttrium atoms. The tetramer gradually loses N2O5 and, through the formation of Y4O5(NO3)
(2), is transformed into yttrium oxide. The bond lengths and bond angles of intermediate
oxynitrates calculated using the molecular mechanics method rendered data compatible with the
results of X-ray diffraction for related compounds.

Keywords

Rare earth; Yttrium nitrate hexahydrate; Thermal decomposition; Oxynitrates; Computer modeling