Original scientific paper

A Sol-Gel Process for the Preparation of Micro-Spheroids of Nickel (II) Hydroxide

N. Bonacci ; Laboratory of Electrochemistry and Laboratory of Physicochemical Separations, »Ruder Bo!i kovic« Institute, 41001 Zagreb, Croatia, Yugoslavia
D. M. Novak ; Laboratory of Electrochemistry and Laboratory of Physicochemical Separations, »Ruder Bo!i kovic« Institute, 41001 Zagreb, Croatia, Yugoslavia

Abstract

The sol-gel procedure for the preparation of nickel(!!) hydroxide
micro-spheroids of definite size and shape is described.
The process is a two-stage operation. In the first stage the
concentrated sol of Ni(OHh is produced by a sequence of precipitation,
centrifugation, resuspension and electrodialysis. In the
second stage the sol is transformed into a gel in a column in the
counter-current flow of a dehydrating alcohol. Flow rate control
of the sol and of the dehydrating agent allow preparation of spherical
particles of different diameters in the range of 0.1 to 0.3 mm.

Keywords

Hrčak ID:

196997

URI

https://hrcak.srce.hr/196997

Publication date:

15.4.1974.

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