TY  - JOUR
T1  - CHARACTERISATION OF FINE ALUMINA POWDERS OF MAXIMUM POROSITY PREPARED BY EMULSION EVAPORATION
AU  - Sarıkaya, Y.
PY  - 2001
DA  - January
JF  - Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering
JO  - Commun. Fac. Sci. Univ. Ank. Ser. B
PB  - Ankara University
WT  - DergiPark
SN  - 1303-6017
SP  - 0
EP  - 0
VL  - 47
LA  - en
AB  - 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.
KW  - CHARACTERISATION
KW  - POROSITY
KW  - PREPARED
CR  - Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering
UR  - https://dergipark.org.tr/en/pub/communb/issue//998940
L1  - https://dergipark.org.tr/en/download/article-file/1987960
ER  -