Original scientific paper

The Precipitation of Alumina Hydrate from Aluminate Solutions in the Presence of Some Higher Alcohols and Starch

H. Iveković ; Institute of Inorganic, Analytical and Physical Chemistry, Faculty of Pharmacy, University of Zagreb, Croatia, Yugoslavia
T. Vrbaški ; Institute of Inorganic, Analytical and Physical Chemistry, Faculty of Pharmacy, University of Zagreb, Croatia, Yugoslavia
D. Pavlović ; Institute of Inorganic, Analytical and Physical Chemistry, Faculty of Pharmacy, University of Zagreb, Croatia, Yugoslavia

Abstract

The effect of low concentrations of isopropyl alcohol, n -butyl alcohol, isovaleryl alcohol, glycol, glycerol , glucose and starch on the rate of precipitation of alumina hydrate from metastable aluminate solution s was studied. The changes of electric conductivity during the precipitation were also measured. Only glycol accelerated the precipitation of alumina hydrate at concentrations covered by the experiments; the other substances retarded the precipitation. Glycerol in a concentration of about 0.2 M/ 1., glucose in a concentration of 6.7 g./ 1., and starch in a concentration of 6.7 g./l, prevented the precipitation.

Keywords

Hrčak ID:

247068

URI

https://hrcak.srce.hr/247068

Publication date:

15.7.1956.

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