Understanding the formation of Al13 and Al30 polycations to the development of microporous materials based on Al13-and Al30-PILC montmorillonites: a review
Fecha
2021Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
Impacto
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10.1016/j.clay.2021.105996
Resumen
Hydrolysis of aluminum cations (Al3+), the third most abundant metal in the Earth’s crust, is considered relevant
in many academic fields, including materials science and chemical engineering. AlIII -polycations and their
different uses have also been widely studied, as reflected in the extensive literature in that field. This review
summarizes some of those studies, from Al3+ hydrolysis to fo ...
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Hydrolysis of aluminum cations (Al3+), the third most abundant metal in the Earth’s crust, is considered relevant
in many academic fields, including materials science and chemical engineering. AlIII -polycations and their
different uses have also been widely studied, as reflected in the extensive literature in that field. This review
summarizes some of those studies, from Al3+ hydrolysis to form Al13 ([Al13O4(OH)24(H2O)12]7+) and Al30
([(Al30O8(OH)56(H2O)24)]18+) polycations and their specific use as pillaring agents for montmorillonite, which is
the most commonly used clay mineral in Aluminum Pillared Interlayered Clays (Al-PILC) synthesis. The
experimental conditions published over the years regarding the synthesis of both these AlIII-polycations, as well
as the conditions employed to synthesize Al-PILC montmorillonite using Al13 and Al30 polycation solutions, are
also summarized. This review highlights some of the findings that have made it possible to explain the formation
of Al13- and Al30-PILC montmorillonites, and allow us to clearly understand their differences. Finally, the new
tendencies in the development of these materials based on Al-PILC and the applications are also highlighted. [--]
Materias
Aluminum Pillared Interlayered Clays (Al- PILC),
Aluminum pillared montmorillonites,
Hydrolysis of aluminum,
Polynuclear species,
Aluminum polycations,
Al13 polycation,
Al30 polycation,
Hydroxo polymers,
Keggin-type species
Editor
Elsevier
Publicado en
Applied Clay Science 203 (2021) 105996
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 Economy, Industry and Competitiveness (AEI/MINECO) and
the European Regional Development Fund (ERDF) through project
MAT2016-78863-C2-R. YC thanks the Universidad Pública de Navarra
for a pre-doctoral grant (IberusTalent, European Union’s H2020
research and innovation programme under Marie Sklodowska-Curie
grant agreement N◦ 801586). AG also thanks Santander Bank for funding
via the Research Intensification Program.