{"id":58257,"date":"2018-03-09T22:46:06","date_gmt":"2018-03-09T22:46:06","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sa%c2%adntesi-de-cera-mics-tecnola%c2%b2gics-per-ma%c2%a8todes-de-combustio-de-gels\/"},"modified":"2018-03-09T22:46:06","modified_gmt":"2018-03-09T22:46:06","slug":"sa%c2%adntesi-de-cera-mics-tecnola%c2%b2gics-per-ma%c2%a8todes-de-combustio-de-gels","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/sa%c2%adntesi-de-cera-mics-tecnola%c2%b2gics-per-ma%c2%a8todes-de-combustio-de-gels\/","title":{"rendered":"S\u00edntesi de cer\u00c1\u00a0mics tecnol\u00f3gics per m\u00e9todes de combusti\u00f3 de gels"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Javier Garc\u00eda Capdevila <\/strong><\/h2>\n<p>Dentro de la s\u00edntesis de \u00f3xidos, la obtenci\u00f3n de nanopart\u00edculas se muestra como una alternativa atractiva a los m\u00e9todos tradicionales ya que el aumento de superficie espec\u00edfica generado al disminuir el tama\u00f1o de grano, provoca una mejora sustancial en aquellas propiedades que se relacionan con la superficie de la part\u00edcula, como la sinterizabilidad.     se utilizan m\u00e9todos de combusti\u00f3n de geles de acrilamida para la s\u00edntesis de diferentes familias de \u00f3xidos magn\u00e9ticos, superconductores, conductores i\u00f3nicos y mixtos, etc. El hecho de partir de una disoluci\u00f3n proporciona una gran homogeneidad estructural y composicional a los productos as\u00ed obtenidos, mientras que la combusti\u00f3n de geles de acrilamida se revela como un m\u00e9todo \u00e1gil, versatil y robusto de s\u00edntesis, permitiendo la fabricaci\u00f3n de lotes relativamente grandes en un breve lapso de tiempo.     en este trabajo, en primer lugar, se estudia el propio m\u00e9todo para determinar cu\u00e1les son los factores significativos en la s\u00edntesis utilizando el dise\u00f1o de experimentos para maximizar la informaci\u00f3n que se puede extraer del sistema con el menor n\u00famero posible de experimentos. A continuaci\u00f3n se aplica la combusti\u00f3n de geles de acrilamida para la s\u00edntesis de diversos \u00f3xidos:  conductores i\u00f3nicos: re0,2ce0,8o1,9 (re=sm, gd, y&#8230;); Y0,16zr0,84o1,9 estructura fluorita  conductores mixtos: la0,5sr0,5mo3 (m=mn,co) estructura tipo perovskita  \u00f3xidos magn\u00e9ticos: mn1-xznxfe2o4  estructura tipo espinela  \u00f3xidos superconductores: ybacu3o4\/y2ba cu o5; bi2-x pbx sr2 ca cu2 o8 estructura tipo pervoskita     en cap\u00edtulos posteriores se procede a estudiar la s\u00edntesis mediante combusti\u00f3n de geles de poliacrilamida como una alternativa que sorta la toxicidad de la acrilamida.     finalmente se describe un dispositivo de spray-pis\u00f3lisis para la s\u00edntesis en continuo a escala piloto.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>S\u00edntesi de cer\u00c1\u00a0mics tecnol\u00f3gics per m\u00e9todes de combusti\u00f3 de gels<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 S\u00edntesi de cer\u00c1\u00a0mics tecnol\u00f3gics per m\u00e9todes de combusti\u00f3 de gels <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Javier Garc\u00eda Capdevila <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 30\/04\/2007<\/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>Merc\u00e9 Segarra Rub\u00ed<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Joan Ramon Morante Lleonart <\/li>\n<li>Irene Garc\u00eda Cano (vocal)<\/li>\n<li>Salvador Pi\u00f1ol Vidal (vocal)<\/li>\n<li>Pedro Nu\u00f1ez Coello (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Javier Garc\u00eda Capdevila Dentro de la s\u00edntesis de \u00f3xidos, la obtenci\u00f3n de nanopart\u00edculas se muestra como una [&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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