Synthesis and characterizatio of transition aluminas from recycled scrap aluminium

dc.contributor.areaGerencia Tecnológica y/o Tecnología
dc.contributor.authorRodríguez, Rosa María
dc.contributor.authorGutiérrez, Delia
dc.contributor.authorSaab, Elvira
dc.contributor.authorLabrador, Norberto
dc.contributor.authorHung, Xavier
dc.contributor.authorPalma, Carlos
dc.contributor.departmentDepartamento de Química
dc.contributor.facultyFacultad de Ciencias
dc.date.issued2019
dc.description.abstractThe aim of this study was to develop an alternative methodology for the synthesis of transition aluminas, in order to reduce ecological costs by using recycled metal scrap as raw material (cans of soft drinks) and generate a product with high added value. The synthesis technique employed yielded a precursor comprised of 55.4 % of bayerite, 41.2 % of boehmite, and ammonium salt, according the characterization performed with X-ray diffraction and quantification by the Rietveld method. The ammonium chloride salt present is not relevant for the process, since given its solubility in water, it could be eliminated by successive washing. Scanning electron microscopy evaluations showed the presence of agglomerates of particles between 50 and 300 μm. A bimodal grain sizes distribution was detected during the laser granulometric test. Thermogravimetric analysis of the precursor indicated a 40.6 % total weight loss at 1000 ºC. The heat treatments at 350 and 750 ºC of precipitates for 1, 2 and 4 h, produced various transition aluminas (γ, η, θ), which are products where value has been added and might have a potential use as binders in monolithic products, catalyst support, or additives for puzzolanic materials, among others.en_EN
dc.description.indexedScopus
dc.format.extentEn prensa
dc.identifier.urihttps://saber.unimet.edu.ve/handle/20.500.14516/236
dc.language.isoeng
dc.publication.titleRevista internacional de contaminación ambiental
dc.relatedURLhttps://www.scielo.org.mx/pdf/rica/v36n4/0188-4999-rica-36-04-1011.pdf
dc.titleSynthesis and characterizatio of transition aluminas from recycled scrap aluminium

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