{"id":70315,"date":"2018-03-09T23:14:52","date_gmt":"2018-03-09T23:14:52","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sa%c2%adntesis-de-nanotubos-de-carbono-por-descomposicion-de-acetileno-sobre-catalizadores-de-hierro\/"},"modified":"2018-03-09T23:14:52","modified_gmt":"2018-03-09T23:14:52","slug":"sa%c2%adntesis-de-nanotubos-de-carbono-por-descomposicion-de-acetileno-sobre-catalizadores-de-hierro","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sa%c2%adntesis-de-nanotubos-de-carbono-por-descomposicion-de-acetileno-sobre-catalizadores-de-hierro\/","title":{"rendered":"S\u00edntesis de nanotubos de carbono por descomposici\u00f3n de acetileno sobre catalizadores de hierro"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Paloma Navarro L\u00f3pez <\/strong><\/h2>\n<p>El trabajo de investigaci\u00f3n se ha centrado inicialmente en la s\u00edntesis catal\u00edtica de materiales que tengan un alto contenido en nanotubos de carbono y la caracterizaci\u00f3n morfol\u00f3gica de \u00e9stas. Para ello se han preparado catalizadores de hierro soportados sobre diferentes materiales, ox\u00eddicos como: s\u00edlice y al\u00famina y carbonosos como: carb\u00f3n activo, tamiz molecular (saran) y grafito de alta superifice (hsag), se ha variado la carga y el procursor met\u00e1lico. adem\u00e1s de las t\u00e9cnicas m\u00e1s convencionales de impregnaci\u00f3n a humedad incipiente se ha empleado el m\u00e9todo sol-gel para obtener un catalizador con alta dispersi\u00f3n de hierro.  para sintetizar sobre los catalizadores preparados, nanotubos de carbono de manera controlada se han ensayado distintos gases de alimentaci\u00f3n y diferentes condiciones de trabajo. Todos los experimentos han sido seguidos gravim\u00e9tricamente en una termobalanza, lo que ha permitido un estudio de la velocidad de deposici\u00f3n de carb\u00f3n durante la reacci\u00f3n. El gas que aporta gravim\u00e9tricamente en una termobalanza, lo que ha permitido un estudio de la velocidad de deposici\u00f3n de carb\u00f3n durante la reacci\u00f3n. El gas que aporta el carbono se ha alimentado sobre el catalizador de manera continuada (trabajo en flujo continuo-) o introduciendo pulsos (m\u00e9todo de pulsos). Una vez obtenidos los dep\u00f3sitos carbonosos se ha estudiado su morfolog\u00eda empleando la t\u00e9cnica de microscop\u00eda electr\u00f3nica de transmisi\u00f3n lo que ha permitido identificar la naturaleza tubular de los productos. En algunos casos se han empleado otras t\u00e9cnicas como; microscop\u00eda electr\u00f3nica de barrido, difracci\u00f3n de rayos x e incluso espectroscop\u00eda ultravioleta-raman, que han ayudado a la caracterizaci\u00f3n de los productos. El m\u00e9todo de pulsos ha permitido la proposici\u00f3n de un mecanismo de crecimiento de dichos nanotubos de carbono.  en una segunda parte del trabajo se ha tratado de explorar la potencial aplicaci\u00f3n de estos materiales en el<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>S\u00edntesis de nanotubos de carbono por descomposici\u00f3n de acetileno sobre catalizadores de hierro<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 S\u00edntesis de nanotubos de carbono por descomposici\u00f3n de acetileno sobre catalizadores de hierro <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Paloma Navarro L\u00f3pez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 24\/09\/2004<\/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>Inmaculada Rodr\u00edguez Ramos<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: vicente Fern\u00e1ndez <\/li>\n<li> D\u00edaz tasc\u00f3n Juan  Manuel (vocal)<\/li>\n<li>Jos\u00e9 ram\u00f3n Alvarez collado (vocal)<\/li>\n<li>Francisco Rodriguez reinoso (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Paloma Navarro L\u00f3pez El trabajo de investigaci\u00f3n se ha centrado inicialmente en la s\u00edntesis catal\u00edtica de materiales [&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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