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Hydroxy-Nickel Interlayering in Montmorillonite by Titration Method

Published online by Cambridge University Press:  01 July 2024

S. Yamanaka  and
G. W. Brindley
S. Yamanaka
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
G. W. Brindley
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
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Abstract

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Nickel nitrate solution is potentiometrically titrated (a) with montmorillonite, (b) without montmorillonite, in the nitrate solution. X-ray powder diffraction and chemical analyses are made of the products formed by the clay at various stages of titration. The pH values of the titration curve (a) are lower than those of curve (b) until the brucite-like hydroxynickel interlayer is more or less complete. The resulting product then closely resembles a chlorite. The preferential precipitation of hydroxide in the interlayer region is explained in terms of the acidic character of montmorillonite interlayers.

Резюме

Резюме

Раствор азотнокислого никеля был потенциометрически титрован /а/ с монтмориллонитом и /в/ без монтмориллонита в раствор нитрата.Полученные из глины продукты были исследованы в порошке методом дифракции рентгеновских лучей и химическими анализами.Значения pH кривой титрования /а/ меньше,чем кривой /в/,пока более или менее не завершится формирование бруситоподобного прослоя гидроокиси никеля.После этого полученный продукт близко напоминает хлорит.Преимущественное осаждение гидроокиси между слоями объясняется кислотной средой,существующей на поверхностях слоев монтмориллонита.

Keywords

ChloriteInterlayerMontmorilloniteNickelPotentiometric
Type
Research Article
Information
Clays and Clay Minerals , Volume 26 , Issue 1 , February 1978 , pp. 21 - 24
Copyright
Copyright © 1978, The Clay Minerals Society

Footnotes

*

Also associated with the Department of Geosciences.

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