Acta Metallurgica Sinica (English Letters) ›› 1996, Vol. 9 ›› Issue (3): 177-180.

• Research paper • Previous Articles     Next Articles

COMPOSITION AND SPECTROSCOPIC STUDIES OF HYDRATED SODIUM ALUMINATE COMPOUNDS

QIU Guofang, DENG Hongmei, ZENG Wenming and CHEN Hianyi(Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China)Manuscript received 18 September 1995; in revised form 9 April 1995   

  • Received:1996-06-25 Revised:1996-06-25 Online:1996-06-25 Published:2009-10-10

Abstract: XRD, IR, NMR and a "tracer method" are used to investigate two hydrated sodium aluminates. It has been found that the compositions of these two compounds are 4Na2O-Al2O-3-12H2O and Na2O-Al2O3-2.5H2O, respecttvely. The aluminate anion in the former consists of condensed AlO4 tetrahedra.

Key words: sodium aluminate hydrate, composition, spectroscopic study