Aluminatos de sodio obtenidos del sistema Al(NO3)3 • 9H2O - NaOH a través del método de precipitación controlada

sodium aluminate, naalo2？ xh2o, is an important comercial chemical used in water treatment, as a source of aluminium in the preparation of zeolites and other catalytic materials and as an additive in paper manufacturing. sodium aluminates were synthesised in this work by using the al(no3)3 ？ 9h2o- naoh system's controlled precipitation method. using the controlled precipitation method enabled identifying the process's different stages from potentiometric titration of al(no3)3 ？ 9h2o dissolved in water and using naoh as precipitating agent to ensure control and reproducibility and also identify final product characteristics. powders were characterised by infrared spectroscopy (ftir), x-ray diffraction (xrd) and gravimetric and differential thermal analysis (gdta). the results indicated that naalo2 crystallised well at 1,000°c (obtained as the main crystalline sodium aluminate phase) and that β-alumina treatment began to form at 1,500°c.