Synthesis of alumina powders by the glycine-nitrate combustion process

Journal Article · Mon Mar 07 23:00:00 EST 2005 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2004.07.019· OSTI ID:20889752

Toniolo, J C ^[1]; Lima, M D ^[1]; Takimi, A S ^[1]; Bergmann, C P ^[1]

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1. Department of Materials Engineering, Federal University of Rio Grande do Sul, 99 Osvaldo Aranha Av. 705, 90035190 Porto Alegre, RS (Brazil)

The combustion synthesis technique using glycine as fuel and aluminum nitrate as an oxidizer is able to produce alumina powders. Thermodynamic modeling of the combustion reaction shows that as the fuel-to-oxidant ratio increases, the amount of gases produced and adiabatic flame temperatures also increases. X-ray diffractions showed the amorphous structure for as-synthesized powder and presence of well-crystallized {alpha}-Al{sub 2}O{sub 3} after calcination at 1100 deg. C during soaking time of 1 h. Alumina's largest measured specific surface area was 15 m{sup 2}/g with BET method and 0.51 glycine-to-nitrate ratio.

• OSTI ID: 20889752
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 3 Vol. 40; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM NITRATES
ALUMINIUM OXIDES
CALCINATION
CERAMICS
CHEMICAL PREPARATION
COMBUSTION
COMBUSTION PROPERTIES
GLYCINE
OXIDIZERS
POWDERS
SPECIFIC SURFACE AREA
THERMODYNAMIC PROPERTIES
X-RAY DIFFRACTION