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dc.contributor.authorTrujillano, R.-
dc.contributor.authorRico, E.-
dc.contributor.authorVicente, M.A.-
dc.contributor.authorRives, V.-
dc.contributor.authorSobrados, Isabel-
dc.contributor.authorSanz Lázaro, Jesús-
dc.date.accessioned2019-05-30T07:54:38Z-
dc.date.available2019-05-30T07:54:38Z-
dc.date.issued2015-07-23-
dc.identifierdoi: 10.1016/j.clay.2015.07.023-
dc.identifierissn: 0169-1317-
dc.identifier.citationApplied Clay Science 115: 24-29 (2015)-
dc.identifier.urihttp://hdl.handle.net/10261/182829-
dc.description.abstractThe synthesis using microwave radiation of saponites containing Co2+, Zn2+ or Cu2+ in octahedral positions has been explored (in the case of Cu2+, together with Mg2+ or Ni2+). Pure saponite phases were formed under some synthesis conditions, although in other cases some impurities were also formed. Microwave treatment at 180 °C favored the formation of ordered solids, but induced the crystallization of other phases in some cases. Cu2+-containing saponites were formed only if Mg2+ or Ni2+ were used as octahedral sheet co-cations. The solids were characterized by different techniques, including MAS-NMR spectroscopy, which gave very precise information in the case of Zn-saponite, allowing us to estimate the content of tetrahedral Al, but much more undefined information for samples with paramagnetic cations. Nevertheless, the presence of tetrahedral Fe3+ and octahedral Fe2+ species was evidenced. Cu2+ slightly perturbed the NMR signals, while Co2+ strongly perturbed 27Al, 23Na and especially 29Si NMR spectral signals.-
dc.description.sponsorshipThe authors thank the financial support from the Spanish Ministry of Economy and Competitiveness (MINECO, grant MAT2013-47811-C2-R) and the European Regional Development Fund (FEDER).-
dc.publisherElsevier-
dc.relationMINECO/ICTI2013-2016/MAT2013-47811-C2-R-
dc.rightsclosedAccess-
dc.subjectTransition metal saponites-
dc.subjectMicrowave-assisted synthesis-
dc.subjectMAS-NMR spectroscopy-
dc.titleSaponites containing divalent transition metal cations in octahedral positions - Exploration of synthesis possibilities using microwave radiation and NMR characterization-
dc.typeartículo-
dc.relation.publisherversionhttps://doi.org/10.1016/j.clay.2015.07.023-
dc.date.updated2019-05-30T07:54:38Z-
dc.language.rfc3066eng-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderEuropean Commission-
dc.relation.csic-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
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