Studies on synthesis of alumina nanopowder from synthetic Bayer liquor

Journal Article · Tue Jun 05 00:00:00 EDT 2007 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2006.09.019· OSTI ID:21000646

Mazloumi, Mahyar ^[1]; Arami, Hamed ^[1]; Khalifehzadeh, Razieh ^[1]; Sadrnezhaad, S K ^[1]

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1. Materials and Energy Research Center, P.O. Box 14155-4777, Tehran (Iran, Islamic Republic of)

Procedure for synthesis of alumina nanopowder from Bayer liquor (synthetic sodium aluminate solution) is investigated. Cooling, ageing and then addition of 3 ml/l Tiron (1,2-dihydroxy-3,5-benzene disulfonic acid disodium salt) to the supersaturated liquor affect purity and fineness of the nanopowder product. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive X-ray (EDAX) analyses indicate that purity of the alumina nanopowder increases with the aging time. Experimental observations show that highly pure alumina nanopowders could be produced by direct calcination of cold gelatinous sodium aluminate solution followed by careful washing at a Tiron concentration of 3 ml/l NaOH.

• OSTI ID: 21000646
• Journal Information: Materials Research Bulletin, Vol. 42, Issue 6; Other Information: DOI: 10.1016/j.materresbull.2006.09.019; PII: S0025-5408(06)00387-4; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
ALUMINATES
ALUMINIUM OXIDES
BENZENE
CALCINATION
CERAMICS
CHEMICAL PREPARATION
COOLING
IMPURITIES
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
SODIUM
SODIUM HYDROXIDES
SOL-GEL PROCESS
TIRON
TRANSMISSION ELECTRON MICROSCOPY
X RADIATION
X-RAY DIFFRACTION