The formation of unusually twofold coordinated boron in a sodalite matrix

verfasst von

Hans Henning E. Pietsch, Michael Fechtelkord, Josef Christian Buhl

Abstract

Unusually twofold coordinated boron in the form of an isolated metaborate anion has been obtained via thermal dehydration of a B(OH)^-₄ containing sodalite, grown from kaolinite and sodium perborate in 4 M NaOH under hydrothermal conditions. The kinetics of this metaborate formation inside the aluminosilicate [4⁶6⁸] polyhedral cages of the sodalite host matrix have been studied in dependence of heating time and temperature. Powder XRD and IR spectroscopy as well as MAS NMR of the nuclei ¹¹B, ²³Na, and ²⁹Si have been applied to reveal the extent of this metaborate formation inside the aluminosilicate sodalite matrix.

Organisationseinheit(en)

Institut für Mineralogie

Typ

Artikel

Journal

Journal of alloys and compounds

Band

257

Seiten

168-174

Anzahl der Seiten

7

ISSN

0925-8388

Publikationsdatum

25.07.1997

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Werkstoffmechanik, Maschinenbau, Metalle und Legierungen, Werkstoffchemie

Elektronische Version(en)

https://doi.org/10.1016/S0925-8388(97)00019-4 (Zugang: Geschlossen)