Abstrato
Combustion Synthesis Of Nano Gamma-Alumina By Using Amino Acids As Fuels And Investigation Of Effective Factors
R.Norouzbeigi, M.Edrissi
Nano-crystalline alumina particles were synthesized by combustion method using serine and asparagine as fuels, for the first time. A screening design was conducted to determine how key process factors influence preparation of nano crystalline powders. The screening design in this work utilized to rank effective factors on crystalline size of alumina powders. The product was characterized by XRD, BET, and SEM. Nano crystalline ï§-alumina powders with crystal sizes between 3.95nm and 6.71nm were obtained by combustion synthesis. The specific surface areas of samples are between 22.17m2/g and 75.21m2/g. Results of statistical analysis illustrate that fuel to oxidizer ratio is the most effective factor for decreasing the average crystal size.
