CHARACTERISATION OF FINE ALUMINA POWDERS OF MAXIMUM POROSITY PREPARED BY EMULSION EVAPORATION

Y. Sarıkaya

CHARACTERISATION OF FINE ALUMINA POWDERS OF MAXIMUM POROSITY PREPARED BY EMULSION EVAPORATION

Abstract

Water in oil emulsions were prepared by A1(NO3)3 solutions having various concentrations between 0.25 - 2.00 M. The emulsion droplets were investigated by optical microscopy. Infinitely stable emulsions were evaporated by dropping them into hot mineral oil. The precipitated dark brown precursors were calcined at 1000°C and fine alumina powders were obtained. Adsorption and desorption of nitrogen on the powders was realized at 77K. The specific surface areas (A) and the specific micropore-mesopore volumes (V) were determined respectively from the data of adsorption and desorption. The variation of the A and V values as a function of the concentration of A1(NO3)3 solutions was determined. The powder which had the maximum A and V values, was characterised by taking its photograph by an electron microscope and also by determining its particle size distribution and mesopore size distribution.

Keywords

References

Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering

Details

Primary Language

English

Subjects

Chemical Engineering

Journal Section

Research Article

Authors

Y. Sarıkaya This is me
Türkiye

Publication Date

January 1, 2001

Submission Date

January 1, 2001

Acceptance Date

-

Published in Issue

Year 2001 Volume: 47

IZ

https://izlik.org/JA36ED56GA

Cite

RIS / Bibtex

Vancouver

1.Y. Sarıkaya. CHARACTERISATION OF FINE ALUMINA POWDERS OF MAXIMUM POROSITY PREPARED BY EMULSION EVAPORATION. Commun. Fac. Sci. Univ. Ank. Ser. B [Internet]. 2001 Jan. 1;47. Available from: https://izlik.org/JA36ED56GA