Effect of Calcination Temperatures on Ratio of Atomic Weight of Al/O in Sol-Gel Method for Synthesis γ Al2O3 as a Buffer Catalyst

2nd Materials Research Society of Indonesia Meeting

Suastiyanti, Dwita^1 ; Handayani, Sri^2 ; Manawan, Maykel T.E.^3

Mechanical Engineering Department, Institut Teknologi Indonesia (ITI), Puspiptek Raya Street, Serpong, South Tangerang, Banten, Indonesia^1

Chemical Engineering Department, Institut Teknologi Indonesia (ITI), Puspiptek Raya Street, Serpong South Tangerang, Banten, Indonesia^2

Politeknik Negeri Jakarta (PNJ), Depok, West Java, Indonesia^3

关键词: Alumina powder;    Atomic weights;    Calcination temperature;    Nano-meter scale;    SIMPLE method;    Single phase;    Sinter process;    Size and shape;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/214/1/012028/pdf
DOI  :  10.1088/1757-899X/214/1/012028

来源: IOP

【 摘 要 】

The aim of this research was to determine the effect of calcination temperatures on the ratio of atomic weight of Al/O that could affect the formation of γ-Al2O3phase. The novelty of this research is how to produce γ-Al2O3in single phase and nanosize by simple method (sol-gel method).The calcination process was performed at a temperature which varied of 190°C, 275°C and 320°C for 4 hours respectively and sinter process carried out at a temperature of 420°C for 6 hours. Calcination process at temperature of 320°C for 4 hours produces powder with the ratio of atomic weight of Al/O in accordance with the ratio of atomic weight of Al/O in Al2O3compound, 0.6667 (2/3). This ratio is as expected for a compound according to formula of Al2O3. This condition also produces alumina powder with the smallest particle size on the nanometer scale of 84.5 nm. SEM test results show that the grain is still heterogenous in size and shape. The results also show that the grain is still agglomerated.