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Hydrotalcites prepared with different coprecipitant agents and a hazardous aluminium waste. Effects on porosity

AutorGalindo, R.; Yates, H. M.; López-Delgado, A.; Sánchez-Hernández, R.; Padilla, I.
Palabras claveHydrotalcites, porosity, isotherms
Fecha de publicación15-jul-2015
ResumenHydrotalcite-like compounds are a valuable group of porous materials with well-known applications in several fields such as heterogeneous catalysts, adsorbents, flame retardants, ion exchangers, drug releasers or anticorrosives1,2. They consist of complex structures which made up positively charged brucite-like layers [M2+1-xM3+x(OH)2]x+, where M2+ and M3+ are divalent and trivalent cations distributed among octahedral positions, alternating with disordered and negatively charged interlayers [Ax/n]n- with inorganic ions, heteropolyacids, organic acids, etc.. In this sense, several methods and techniques of ageing have been reported for the preparation of these materials such as coprecipitation, hydrothermal synthesis, sol-gel route, use of unconventional sources, use of microwave, ultrasounds, micelles, etc3. The interest of these methods was mainly focused on the control of the textural properties. In this work, the effect on the porosity of these materials is described from the point of view of the coprecipitant agent used and the substitution of the aluminium source for an unconventional precursor obtained from a hazardous waste collected in an aluminium tertiary industry.
DescripciónInternational Conference on Sustainable Materials Science and Technology, Paris, Fr. Comunicación Oral
URIhttp://hdl.handle.net/10261/162267
ISBN987-84-94311-0-4
Aparece en las colecciones: (CENIM) Comunicaciones congresos
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