Development of ceramic-MOF filters from aluminum saline slags for capturing CO2
Fecha
2023Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
Impacto
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10.1016/j.powtec.2023.118962
Resumen
This study describes the procedures followed to synthesize ceramic-MOF filters using aluminum saline slag
wastes. Briefly, the raw aluminum saline slags were washed at 80 ◦C to significantly reduce the saline content
and eliminate gases. The pretreated material was mixed with glucose (G/S ratios between 0.2 and 1.6) and
acetone by stirring for 4 h. After this time, the resulting solid was drie ...
[++]
This study describes the procedures followed to synthesize ceramic-MOF filters using aluminum saline slag
wastes. Briefly, the raw aluminum saline slags were washed at 80 ◦C to significantly reduce the saline content
and eliminate gases. The pretreated material was mixed with glucose (G/S ratios between 0.2 and 1.6) and
acetone by stirring for 4 h. After this time, the resulting solid was dried at 60 ◦C and then at 190 ◦C. During the
glucose caramelization step, PegMn400 was also added and the temperature increased to 1200 ◦C. The obtained
solid was impregnated with precursor solutions to achieve a supported ZIF-8 MOF. The ceramic-MOF filters were
characterized by X-ray diffraction (XRD), N2 adsorption at 77 K, X-ray fluorescence (XRF), scanning electron
microscopy (SEM) and transmission electron microscopy (HR-TEM), thereby confirming the presence of a
structure that allows dispersion of the synthesized and supported ZIF-8. Finally, the performance of these
ceramic-MOF filters as CO2 adsorbents was evaluated in the temperature range 50–300 ◦C, with isosteric heats of
19 kJ/mol being obtained using the Clausius-Clapeyron equation. [--]
Materias
Aluminum industrial waste,
Ceramic-MOF filter synthesis from saline slags,
Carbon dioxide adsorption
Editor
Elsevier
Publicado en
Powder Technology, 429 (2023) 118962
Departamento
Universidad Pública de Navarra. Departamento de Ciencias /
Nafarroako Unibertsitate Publikoa. Zientziak Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute for Advanced Materials and Mathematics - INAMAT2
Versión del editor
Entidades Financiadoras
The authors are grateful for financial support from the Spanish
Ministry of Science and Innovation (AEI/MINECO) and Government of
Navarra through projects PID2020-112656RB-C21 and 0011-3673-
2021-000004. JJTH thanks Universidad Pública de Navarra for a postdoctoral
grant.