Low-Calcination Temperature to Synthesize A-Alumina From Aluminium Waste Can Using Sol-Gel Method

Omer, Al Haiqi; Mokaizh, Aiman A. Bin; Shariffuddin, Jun Haslinda

doi:10.1088/1755-1315/641/1/012023

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Another run of heat treatment was carried out at 1200 • C for 1h to inspect the phase change when the calcination temperature rises. The result of this attempt was a highly crystalline Al 2 O 3 (brown top curve), and all the peaks correspond to α-alumina [36,37]. This result confirms that the heat treatment under an air atmosphere is the determining parameter in the crystallinity of Al 2 O 3 .…”

Section: Xrd Investigationsupporting

confidence: 68%

Synthesis of Nanostructured Alumina from Byproduct Aluminum Filings: Production and Characterization

Esaifan,

Al-Mobydeen,

Al-Masri

et al. 2023

Inorganics

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Aluminum oxide production from aluminum filings, which are a byproduct of several industrial machining processes and cannot be recycled to attain bulk aluminum (Al), is vital due to its wide use in scientific research and industry. The goal of this paper is to produce ultrafine and down-to-the-nanoscale alumina powder (Al2O3), starting from a waste Al filings. The microstructure and composition of the starting Al used were investigated using scanning electron microscopy (SEM), which was equipped with an attached energy dispersive spectrometer (EDS) unit. The results of this investigation confirmed that the starting Al was mainly Al–Mg alloy. Al2O3 was produced using two routes: The first involved the burning of aluminum hydroxide Al(OH)3 that was precipitated from aluminum chloride solution (AlCl3) resulting from dissolving the Al filings in 2M HCl. The second route involved direct precipitation as a reaction product of aluminum chloride with sodium carbonate solution. The Al2O3 produced using both routes, as well as the intermediate product Al(OH)3, were studied by SEM. The results demonstrate that the nanoscale range size was reached after milling of the produced Al2O3. Following thorough washing with distilled water, the EDS and the XRD techniques confirmed the formation of Al2O3, with no residual salt detected. The EDS results showed that the ratios of Al and O in the produced Al2O3 were about 96% of the ideal compound ratios. The XRD analysis also revealed the amorphous structure of the standard and the produced Al(OH)3, whereas the phases of the produced Al2O3 were either crystalline or amorphous. In our study, the Al2O3 percentage yield was about 77%, and this value obviously depends on the percentage of Al dross in the original Al filings. Overall, this research provides a novel contribution to the production of alumina powder in the nano-range starting from an aluminum filings byproduct, thereby reducing the dependence on known sources of aluminum.

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Section: Xrd Investigationsupporting

confidence: 68%

Synthesis of Nanostructured Alumina from Byproduct Aluminum Filings: Production and Characterization

Esaifan,

Al-Mobydeen,

Al-Masri

et al. 2023

Inorganics

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“…It has a large specific surface area about 100 m 2 /g [17,20]. Because of its high surface area, high thermal and chemical stability, and high mechanical power, alumina is commonly used as a catalyst or additive in the industrial sector in many process industries as prior highlighted such as hydrogen processing and petroleum refining [15,21,22]. As a result, this study aimed to synthesise γ-Al2O3 from aluminium waste and investigate the thermal resistance of the synthesised samples at different reaction temperatures using TGA analysis.…”

Section: Introductionmentioning

confidence: 99%

Study Thermal Resistance of γ-Al<sub>2</sub>O<sub>3</sub> at Various Reaction Temperatures via TGA Analysis

Mokaizh

Nour

Alara

et al. 2023

MSF

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The discarded empty aluminium beverage cans can pose a serious environmental contamination issue. Recently, studies are now focusing on reducing and utilising solid wastes which have grown to be a significant environmental concern. Thus, this study focuses on producing γ-Al2O3 from readily available aluminium garbage cans using a Sol-gel technique and analysing its thermal properties using TGA analysis. The effect of the reaction temperatures was further investigated to comprehend the synthesis of alumina at (room temperature, 50 °C, and 70 °C) at a fixed aging duration of 12 h. Experimental findings demonstrated the potential of producing γ-Al2O3 from used aluminium cans, which may then be used as sustainable catalysts and catalytic supports for a variety of applications. The results showed that all the synthesised alumina had a good result with a maximum weight loss less than 5%; this reflected its strong stability. The alumina that was created at 70 °C reaction temperature recorded the lowest weight loss and the highest residue at 2.78% and 97.22%, respectively.

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Elucidating the Effects of Reaction Time on the Physicochemical Characterization of Valorized Synthesized Alumina

et al. 2022

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Aluminum waste-can management in Malaysia has recently become a serious environmental and public health issue, particularly in metropolitan areas. This has prompted the need to valorize these waste-cans into value-added products using the most economical and environmentally friendly techniques. In this study, the sol–gel technique was used to synthesize high-quality alumina from the aluminum waste-cans collected. From this method, the observed peaks of the synthesized alumina were identified as diaspore (α-AlO(OH)), boehmite (γ-AlO(OH)), aluminum oxide, or gamma-alumina (γ-Al2O3) crystalline structure and corundum. The morphological configuration, microstructure, and functional group properties of the synthesized alumina were evaluated. All the synthesized alumina exhibited a non-spherical shape and appeared to have hexagonal-like shape particles. Moreover, the XRD patterns of the synthesized alumina AL-6-30 and AL-12-30 exhibited a small angle (1–10°) with no XRD peak, which indicated a mesoporous pore structure with no long-range order. The overall results of γ-alumina synthesized from the aluminum waste-cans showed an optimal condition in producing a highly structured γ-alumina with excellent surface-area characteristics. The synthesized alumina exhibited stronger and highly crystalline functional characteristics almost comparable with the commercially available brands on the market.

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Low-Calcination Temperature to Synthesize A-Alumina From Aluminium Waste Can Using Sol-Gel Method

Cited by 3 publications

References 14 publications

Synthesis of Nanostructured Alumina from Byproduct Aluminum Filings: Production and Characterization

Synthesis of Nanostructured Alumina from Byproduct Aluminum Filings: Production and Characterization

Study Thermal Resistance of γ-Al<sub>2</sub>O<sub>3</sub> at Various Reaction Temperatures via TGA Analysis

Elucidating the Effects of Reaction Time on the Physicochemical Characterization of Valorized Synthesized Alumina

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