Synthesis of Cu-Al layered double hydroxides from aluminum saline slags

Boulahbal, Aziza Imene; Santamaría Arana, Leticia; Azizi, A.; Boutahala, Mokhtar; Korili, Sophia A.; Gil Bravo, Antonio

Synthesis of Cu-Al layered double hydroxides from aluminum saline slags

dc.contributor.author	Boulahbal, Aziza Imene
dc.contributor.author	Santamaría Arana, Leticia
dc.contributor.author	Azizi, A.
dc.contributor.author	Boutahala, Mokhtar
dc.contributor.author	Korili, Sophia A.
dc.contributor.author	Gil Bravo, Antonio
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Zientziak	eu
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.contributor.funder	Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa	es
dc.date.accessioned	2023-11-10T08:39:59Z
dc.date.available	2023-11-10T08:39:59Z
dc.date.issued	2023
dc.date.updated	2023-11-10T08:30:10Z
dc.description.abstract	The use of saline slag, a hazardous waste generated during the recycling of aluminum, as aluminum source for the synthesis CuAl layered double hydroxides (LDH) is for the first time reported in this study. Due to the JahnTeller effect, divalent copper–aluminum LDH come usually with impurities and a pure CuAl LDH is not easy to obtain. The effect of synthesis pH has been examined by comparing LDH synthesized at various pH, ranging from 6 to 12 via a co-precipitation method using aluminum obtained from an alkaline extraction of the slag. For comparison purposes, a sample was synthesized at pH = 9 using commercial aluminum Al(NO3)3⋅9H2O instead of extracted aluminum. The effects of the aging time and calcination temperature are also discussed. The LDH and their calcined metal mixed oxide (layered double oxide, LDO) have been analyzed with several characterization techniques: powder X-ray diffraction (PXRD), N2 adsorption at − 196 ◦C, thermogravimetric analysis (TGA), temperature programmed reduction (TPR), scanning electron microscopy (SEM), transmission electron microscopy and energy-dispersive X-ray spectroscopy (TEM and EDS). Synthesis pH has been proved not only to have a significant effect on the nature of secondary phases but also on the structure and morphology of the samples.	en
dc.description.sponsorship	The authors are grateful for financial support from the Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/ 501100011033) through project PID2020-112656RB-C21. Open access funding provided by Universidad Pública de Navarra for a post-doctoral Margarita Salas grant, financed by the European Union-Next Generation EU.	en
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/msword	en
dc.identifier.citation	Boulahbal, A. I., Santamaría, L., Azizi, A., Boutahala, M., Korili, S. A., & Gil, A. (2023). Synthesis of Cu-Al layered double hydroxides from aluminum saline slags. Minerals Engineering, 204, 108413. https://doi.org/10.1016/j.mineng.2023.108413	en
dc.identifier.doi	10.1016/j.mineng.2023.108413
dc.identifier.issn	0892-6875
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/46742
dc.language.iso	eng	en
dc.publisher	Elsevier	en
dc.relation.ispartof	Minerals Engineering 204 (2023) 108413	en
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112656RB-C21/ES/
dc.relation.publisherversion	https://doi.org/10.1016/j.mineng.2023.108413
dc.rights	© 2023 The Author(s). This is an open access article under the CC BY-NC-ND license.	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	Layered double hydroxides	en
dc.subject	Hydrotalcite	en
dc.subject	Copper	en
dc.subject	Jahn-Teller effect	en
dc.subject	Aluminum saline slag	en
dc.subject	Industrial waste	en
dc.title	Synthesis of Cu-Al layered double hydroxides from aluminum saline slags	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Publication
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