{"id":28793,"date":"2011-02-01T23:39:48","date_gmt":"2011-02-01T22:39:48","guid":{"rendered":"https:\/\/icmsva.vallealto.es\/?articulos_sci=influence-of-oh%e2%88%92-concentration-on-the-illitization-of-kaolinite-at-high-pressure"},"modified":"2026-04-14T11:49:50","modified_gmt":"2026-04-14T09:49:50","slug":"influence-of-oh%e2%88%92-concentration-on-the-illitization-of-kaolinite-at-high-pressure","status":"publish","type":"articulos_sci","link":"https:\/\/icmsva.vallealto.es\/?articulos_sci=influence-of-oh%e2%88%92-concentration-on-the-illitization-of-kaolinite-at-high-pressure","title":{"rendered":"Influence of OH\u2212 concentration on the illitization of kaolinite at high pressure"},"content":{"rendered":"<figure><img decoding=\"async\" src=\"https:\/\/icmsva.vallealto.es\/wp-content\/uploads\/2011\/02\/Influence-of-OH\u2212-concentration-on-the-illitization-1.jpg\" alt=\"Influence of OH\u2212 concentration on the illitization of kaolinite at high pressure\" \/><\/figure>\n<p>The products of hydrothermal reactions of kaolinite at 300\u00a0\u00b0C and 1000 bars were studied in KOH solutions covering an OH<sup>\u2212<\/sup> concentration, [OH<sup>\u2212<\/sup>], of 1\u00a0M to 3.5\u00a0M. XRD patterns indicated a notable influence of the [OH<sup>\u2212<\/sup>] on the reaction. At [OH]\u00a0\u2265\u00a03\u00a0M, 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<sup>\u2212<\/sup>]. <sup>27<\/sup>Al MAS NMR spectroscopy revealed the formation of small nuclei of K-F zeolite at high [OH<sup>\u2212<\/sup>]. Finally, modelling of the <sup>29<\/sup>Si 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<sup>\u2212<\/sup>]. In good agreement with the XRD data, the quantification of the reaction products by <sup>29<\/sup>Si MAS NMR indicated a linear decrease of the kaolinite content with increasing OH<sup>\u2212<\/sup> concentration.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The products of hydrothermal reactions of kaolinite at 300\u00a0\u00b0C and 1000 bars were studied in KOH solutions covering an OH\u2212 concentration, [OH\u2212], of 1\u00a0M to 3.5\u00a0M. XRD patterns indicated a notable influence of the [OH\u2212] on the reaction. At [OH]\u00a0\u2265\u00a03\u00a0M, the only stable phase was muscovite\/illite. The content of muscovite\/illite was calculated from the analysis&hellip;<\/p>\n","protected":false},"featured_media":28794,"template":"","autores":[],"grupos_de_investigacion":[6508],"revistas":[196],"anos":[894],"destacados":[],"class_list":["post-28793","articulos_sci","type-articulos_sci","status-publish","has-post-thumbnail","hentry","grupos_de_investigacion-materiales-para-energia-y-sostenibilidad","revistas-applied-clay-science","anos-894","description-off"],"acf":[],"_links":{"self":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/28793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci"}],"about":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/types\/articulos_sci"}],"version-history":[{"count":1,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/28793\/revisions"}],"predecessor-version":[{"id":28795,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/28793\/revisions\/28795"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/media\/28794"}],"wp:attachment":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28793"}],"wp:term":[{"taxonomy":"autores","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fautores&post=28793"},{"taxonomy":"grupos_de_investigacion","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fgrupos_de_investigacion&post=28793"},{"taxonomy":"revistas","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Frevistas&post=28793"},{"taxonomy":"anos","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fanos&post=28793"},{"taxonomy":"destacados","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fdestacados&post=28793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}