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

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganics Pub Date : 2023-08-29 DOI:10.3390/inorganics11090355

M. Esaifan, Ahmed Al-Mobydeen, A. Al-Masri, Abdelmnim M. Altwaiq, B. Al-Saqarat, Wadah Mahmoud, A. Hamaideh, I. Moosa, I. Hamadneh, E. AlShamaileh

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引用次数: 0

Abstract

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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副产物铝屑合成纳米氧化铝:生产与表征

氧化铝是几种工业加工过程的副产品，不能回收以获得大块铝，由于其在科学研究和工业中的广泛应用，从铝屑中生产氧化铝至关重要。本文的目标是从废弃的铝屑开始生产超细和纳米级的氧化铝粉末（Al2O3）。使用配有能谱仪（EDS）的扫描电子显微镜（SEM）研究了所用起始Al的微观结构和组成。研究结果证实，起始Al主要为Al–Mg合金。Al2O3的生产有两种途径：第一种途径是燃烧氢氧化铝Al（OH）3，该氢氧化铝是从氯化铝溶液（AlCl3）中沉淀出来的，氯化铝溶液是将Al屑溶解在2M HCl中产生的。第二种途径涉及作为氯化铝与碳酸钠溶液的反应产物的直接沉淀。通过SEM研究了使用这两种路线制备的Al2O3以及中间产物Al（OH）3。结果表明，对制备的氧化铝进行研磨后达到了纳米级范围的尺寸。在用蒸馏水彻底洗涤后，EDS和XRD技术证实了Al2O3的形成，没有检测到残留盐。EDS结果表明，所制备的Al2O3中Al和O的比例约为理想化合物比例的96%。XRD分析还揭示了标准物和所产生的Al（OH）3的无定形结构，而所产生的Al2O3的相是结晶的或无定形的。在我们的研究中，Al2O3的百分比产率约为77%，这个值显然取决于原始Al屑中Al浮渣的百分比。总的来说，这项研究为从铝屑副产品开始生产纳米范围的氧化铝粉末提供了新的贡献，从而减少了对已知铝来源的依赖。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD