{"id":87031,"date":"2018-03-10T00:11:47","date_gmt":"2018-03-10T00:11:47","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-de-la-basicidad-de-zeolitas-mediante-la-adsorcion-de-moleculas-sonda-un-estudio-por-resonancia-magnetica-nuclear\/"},"modified":"2018-03-10T00:11:47","modified_gmt":"2018-03-10T00:11:47","slug":"caracterizacion-de-la-basicidad-de-zeolitas-mediante-la-adsorcion-de-moleculas-sonda-un-estudio-por-resonancia-magnetica-nuclear","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/caracterizacion-de-la-basicidad-de-zeolitas-mediante-la-adsorcion-de-moleculas-sonda-un-estudio-por-resonancia-magnetica-nuclear\/","title":{"rendered":"Caracterizaci\u00f3n de la basicidad de zeolitas mediante la adsorci\u00f3n de moleculas sonda: un estudio por resonancia magnetica nuclear"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Manuel Sanchez Sanchez <\/strong><\/h2>\n<p>En este trabajo se proponen distintos m\u00e9todos para la caractericaci\u00f3n de la basicidad de las zeolitas alcalinas tipo faujasita basados en el seguimiento por resonancia magn\u00e9tica nuclear (rmn) de mol\u00e9culas sonda adsorbidas. asimisma, mediante rmn de diferentes n\u00facleos se ha profundizado en la naturaleza de los centros de adsorcion para estas mol\u00e9culas y en las interacciones adsorbente\/adsorbato.  paralelamente, estos mismos sistemas se han estudiado por espectroscopia infrarroja(ir), lo que nos han permitido, por un lado, confirmar la validez de los m\u00e9todos propuestos por rmn, y por otro lado, la combinacion de ambas t\u00e9cnicas ha permitido profundizar en el estudio de las interacciones entre mol\u00e9cula sonda y zeolita.  en concreto, las mol\u00e9culas sonda propuestas para caracterizar la basicidad de las zeolitas fueron:  -pirrol. Su frecuencia de vibraci\u00f3n del enlace nh del espectro de infrarrojo es una medida de la basicidad promedio. Tambi\u00e9n se ha demostrado que existe una interacci\u00f3n entre el anillo arom\u00e1tico del pirrol y el cati\u00f3n de compensaci\u00f3n de la zeolita, y que el pirrol se adsorbe preferentemente sobre los centros compensados con cationes m\u00e1s electropositivos y con mayor contenido de a1 en sus inmediaciones.  -cloroformo. Su frecuencia de vibraci\u00f3n del enlace ch (vch) y sus desplazamientos qu\u00edmicos &amp; de 1h y de 13c son buenos par\u00e1metros para estimar la basicidad de la zeolita. Esta mol\u00e9cula interacciona con los cationes de compensaci\u00f3n de la zeolita a trav\u00e9s de los at\u00f3mos de c1.  -clorodifluorometano. Tambien vch, &amp;1h y &amp;13c son buenas medidas de la basicidad de la zeolita. Tambi\u00e9n existe interacci\u00f3n entre los hal\u00f3genos y los cationes de compensaci\u00f3n.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n de la basicidad de zeolitas mediante la adsorci\u00f3n de moleculas sonda: un estudio por resonancia magnetica nuclear<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n de la basicidad de zeolitas mediante la adsorci\u00f3n de moleculas sonda: un estudio por resonancia magnetica nuclear <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Manuel Sanchez Sanchez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 23\/10\/2000<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Teresa Blasco Lanzuela<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: avelino Corma canos <\/li>\n<li>vicente Rives arnau (vocal)<\/li>\n<li>vicente Fernandez herrero (vocal)<\/li>\n<li>eduardo Mart\u00ednez tamayo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Manuel Sanchez Sanchez En este trabajo se proponen distintos m\u00e9todos para la caractericaci\u00f3n de la basicidad de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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