{"id":17324,"date":"2002-10-06T00:00:00","date_gmt":"2002-10-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/aplicacion-de-los-solidos-mesoporosos-mcm-41-en-la-reduccion-catala%c2%adtica-selectiva-de-no\/"},"modified":"2002-10-06T00:00:00","modified_gmt":"2002-10-06T00:00:00","slug":"aplicacion-de-los-solidos-mesoporosos-mcm-41-en-la-reduccion-catala%c2%adtica-selectiva-de-no","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/aplicacion-de-los-solidos-mesoporosos-mcm-41-en-la-reduccion-catala%c2%adtica-selectiva-de-no\/","title":{"rendered":"Aplicaci\u00f3n de los solidos mesoporosos mcm-41 en la reducci\u00f3n catal\u00edtica selectiva de no"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ram\u00f3n Moreno Tost <\/strong><\/h2>\n<p>Las emisiones de \u00f3xidos de nitr\u00f3geno (nox) a la atm\u00f3sfera son responsables de muchos efectos da\u00f1inos tanto para la salud humana como para el medio ambiente, entre los que cabe destacar la lluvia \u00e1cida, el calentamiento terrestre y la destrucci\u00f3n de la capa de ozono. Uno de los m\u00e9todos de control de estas emisiones desde fuentes estacionarias en la reducci\u00f3n catal\u00edtica selectiva con nh3, en exceso de 02 para dar n2 y h2o.  en esta tesis doctoral se describen tres familias de catalizadores activos en esta reacci\u00f3n catal\u00edtica, basados en \u00f3xidos de metales de transici\u00f3n (co, cu y ni) soportados sobre una s\u00edlice mesoporosa tipo mcm-41 dopada con circonio (relaci\u00f3n molar si\/zr=5). Estos catalizadores se han caracterizado mediante drx, adsorci\u00f3n de n2 a -196\u00c2\u00bac, dtp de nh3, adsorci\u00f3n de piridina acoplada a ir, reducci\u00f3n t\u00e9rmica programada de h2, xps y dtp de no. Los tests catal\u00edticos se han realizado en un microrreactor de cuarzo y los reactivos y productos de reacci\u00f3n se han analizado mediante espectroscop\u00eda de masas.  los resultados catal\u00edticos muestran que los catalizadores de co son los m\u00e1s activos, con conversiones de no superiores al 90%, a la menor temperatura (250\u00c2\u00bac), con una producci\u00f3n de n2o despreciable. Este comportamiento puede atribuirse a la presencia de pares co3+\/co2+ aislados. En el caso de los catalizadores de cu, el m\u00e1s activo a menor temperatura es el que posee un contenido de cobre del 6% en peso, pudiendo la actividad catal\u00edtica correlacionarse con la facilidad de reducci\u00f3n del par cu2+\/cu+ y la capacidad de adsorber no. Por \u00faltimo, los catalizadores de ni son menos activos y a una mayor temperatura, vi\u00e9ndose la conversi\u00f3n de no muy afectada por el tama\u00f1o de part\u00edcula.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Aplicaci\u00f3n de los solidos mesoporosos mcm-41 en la reducci\u00f3n catal\u00edtica selectiva de no<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Aplicaci\u00f3n de los solidos mesoporosos mcm-41 en la reducci\u00f3n catal\u00edtica selectiva de no <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ram\u00f3n Moreno Tost <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 M\u00e1laga<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 10\/06\/2002<\/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>Antonio Jimen\u00e9z Lopez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 Luis Garc\u00eda fierro <\/li>\n<li>enrique Rodriguez castellon (vocal)<\/li>\n<li>angelo Vaccari (vocal)<\/li>\n<li>Manuel L\u00f3pez granados (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ram\u00f3n Moreno Tost Las emisiones de \u00f3xidos de nitr\u00f3geno (nox) a la atm\u00f3sfera son responsables de muchos [&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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