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Kernmagnetische resonanzmessungen an Glaukoniten

Published online by Cambridge University Press:  09 July 2018

Ewald E. Kohler  and
P.K. Burkert
Ewald E. Kohler
Affiliation:
Lehrstuhl für Mineralogie der TU Miinchen
P.K. Burkert
Affiliation:
Anorganisch-chemisches Laboratorium der TU Miinchen 8000 München 2, Arcisstr 21, Deutschland
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Zusammenfassung

Bei der Untersuchung von 6 Glaukonitproben mit Hilfe der ‘H-Kernresonanz-Spektroskopie zeigen sich deutlich zwei verschieden gebundene OH-Gruppierungen. Wàhrend die relativ scharfen Signale A auf die in der Oktaederschicht flxierten zwei OH-Gruppen zuriickzufuhren sind, muB fiir die anderen OH-Gruppen des breiteren Signals B eine andere Bindungsnatur gefordert werden. Es ist móglich, dafl es sich bei den OH-Gruppen des Signals B ebenfalls um verschieden gebundene OH-Gruppen handelt und zwar um solche, die an Eisenhydroxid- Verunreinigungen gebunden sind und solche, die zwischenschichtlich in Form von Eisen-Hydroxo-Komplexen gebunden sind. Eine Unterscheidung zwischen letzteren beiden Mòglichkeiten ist aber nicht mòglich.

Abstract

Abstract

Examination of six glauconite samples by means of 1H-NMRspectroscopy shows two different kinds of OH-groups. One signal A is caused by OH-groups of the octahedral sheet. Another signal B must derive by bonds of other nature. It is possible that signal B represents OH-bonds of impurities as well as from interlayered hydroxy iron complexes. A more precise dissolution of signal B is not possible.

Abrege

Abrege

L'examen de six échantillons de glauconie au moyen de la spectroscopic 1H-NMR-révèle deux types différents de groupes OH. Un signal A provient de groupes OH de la feuille octaédrique. Un autre signal B doit dériver de liens d'autre nature. II est possible que le signal B représente des liens OH d'impuretés ainsi que de complexes de fer hydroxile en couches intermédiaires. Une dissolution plus précise du signal B est impossible.

Referata

Referata

El examen de seis muestras de glauconitas mediante espectroscopia de resonancia magnètica nuclear H1, muestra dos clases distintas de grupos OH. Una serial A es causada por grupos OH de la làmina octaédrica. Otra senal B debe derivarse por enlaces de otra naturaleza. Es posible que la serial B represente enlaces OH de impurezas asi corno de complejos de Fé hidroxi interestratificados. No es posible obtener una disolución mas precisa de la serial B.

Type
Research Article
Information
Clay Minerals , Volume 11 , Issue 4 , December 1976 , pp. 303 - 311
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1976

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