dc.creator | Mantovani, Marco | es |
dc.creator | Escudero, A. | es |
dc.creator | Becerro Nieto, Ana Isabel | es |
dc.date.accessioned | 2019-02-01T17:12:07Z | |
dc.date.available | 2019-02-01T17:12:07Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Mantovani, M., Escudero, A. y Becerro Nieto, A.I. (2011). Influence of OH- concentration on the illitization of kaolinite at high pressure. Applied Clay Science, 51, 220-225. | |
dc.identifier.issn | 0169-1317 | es |
dc.identifier.uri | https://hdl.handle.net/11441/82384 | |
dc.description.abstract | The products of hydrothermal reactions of kaolinite at 300°C and 1000 bars were studied in KOH solutions covering an OH- concentration, [OH-], of 1M to 3.5M. XRD patterns indicated a notable influence of the [OH-] on the reaction. At [OH]≥3M, the only stable phase was muscovite/illite. The content of muscovite/illite was calculated from the analysis of the diagnostic 060 reflections of kaolinite and muscovite/illite. The results showed a linear dependence of kaolinite and muscovite/illite contents with [OH-]. 27Al MAS NMR spectroscopy revealed the formation of small nuclei of K-F zeolite at high [OH-]. Finally, modelling of the 29Si MAS NMR spectra indicated that the Si/Al ratio of the muscovite/illite formed was very close to that of muscovite, at least in the mineral formed at low [OH-]. In good agreement with the XRD data, the quantification of the reaction products by 29Si MAS NMR indicated a linear decrease of the kaolinite content with increasing OH- concentration. | es |
dc.description.sponsorship | Dirección General de Investigación Científica y Técnica CTQ2007-63297 | es |
dc.description.sponsorship | Junta de Andalucía P06-FQM-02179 | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Applied Clay Science, 51, 220-225. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Kaolinite | es |
dc.subject | KOH | es |
dc.subject | Muscovite/illite | es |
dc.subject | Hydrothermal reaction | es |
dc.subject | OH− concentration | es |
dc.subject | XRD | es |
dc.subject | NMR | es |
dc.title | Influence of OH- concentration on the illitization of kaolinite at high pressure | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/submittedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Química Inorgánica | es |
dc.relation.projectID | CTQ2007-63297 | es |
dc.relation.projectID | P06-FQM-02179 | es |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.clay.2010.11.021 | es |
dc.identifier.doi | 10.1016/j.clay.2010.11.021 | es |
idus.format.extent | 17 p. | es |
dc.journaltitle | Applied Clay Science | es |
dc.publication.volumen | 51 | es |
dc.publication.initialPage | 220 | es |
dc.publication.endPage | 225 | es |
dc.contributor.funder | Ministerio de Educación y Ciencia (MEC). España | |
dc.contributor.funder | Junta de Andalucía | |