Determination of the Optimum Conditions for the Production of Gamma Alumina (ɤ-Al2O3) By the Precipitation Method of the Sodium Aluminate Solution
DOI:
https://doi.org/10.31699/IJCPE.2016.2.9Keywords:
Gamma alumina, Precipitation, XRDAbstract
Design of experiments (DOE) was made by Minitab software for the study of three factors used in the precipitation process of the Sodium Aluminate solution prepared from digestion of α-Al2O3 to determine the optimum conditions to a produce Boehmite which is used in production of ɤ-Al2O3 during drying and calcination processes, the factors are; the temperature of the sodium aluminate solution, concentration of HCl acid added for the precipitation and the pH of the solution at which the precipitation was ended. The design of the experiments leads to 18 experiments.
The results show that the optimum conditions for the precipitation of the sodium aluminate solution which leads to the production of gamma alumina are 6.5 pH, Temperature of solution is 90 C and the concentration of the hydrochloric acid (HCl) is 21%. While all other conditions lead mainly to other phases of alumina which is mainly epsilon- alumina (ε-Al2O3).
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Iraqi Journal of Chemical and Petroleum Engineering

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
For papers published in IJCPE, authors and their institutions all have the same rights to reuse articles published in the journal in accordance with the journal by IJCPE is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. This permits users to copy, redistribute, remix, transmit and adapt the work provided the original work and source is appropriately cited. Please check the license for full license terms and attribution requirements.