%0 Journal Article
%T Aluminatos de sodio obtenidos del sistema Al(NO3)3 • 9H2O - NaOH a trav¨¦s del m¨¦todo de precipitaci¨®n controlada
%A Ruiz Madro£¿ero
%A Christhy Vanessa
%A Rodr¨ªguez Pa¨¦z
%A Jorge Enrique
%J Ingenier¨ªa e Investigaci¨®n
%D 2010
%I Universidad Nacional de Colombia
%X 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¡ãc (obtained as the main crystalline sodium aluminate phase) and that ¦Â-alumina treatment began to form at 1,500¡ãc.
%K sodium aluminate
%K synthesis
%K controlled precipitation method.
%U http://www.scielo.org.co/scielo.php?script=sci_abstract&pid=S0120-56092010000200002&lng=en&nrm=iso&tlng=en