{"id":34839,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/preparacion-y-propiedades-cataliticas-de-pilares-de-oxido-de-cromo-en-alfa-fosfato-de-circonio\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"preparacion-y-propiedades-cataliticas-de-pilares-de-oxido-de-cromo-en-alfa-fosfato-de-circonio","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/preparacion-y-propiedades-cataliticas-de-pilares-de-oxido-de-cromo-en-alfa-fosfato-de-circonio\/","title":{"rendered":"Preparacion y propiedades cataliticas de pilares de oxido de cromo en alfa fosfato de circonio."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Perez Reina Francisco Jose <\/strong><\/h2>\n<p>La memoria describe la s\u00edntesis, caracterizaci\u00f3n y propiedades cataliticas de preparados de los pilares de \u00f3xido de cromo en alfa-fosfato de circonio preparados, utilizando un m\u00e9todo de coloidizaci\u00f3n diferente al empleado hasta ahora. Este nuevo m\u00e9todo, denominado m\u00e9todo b en la memoria, hace uso de un intercalado obtenido por la absorci\u00f3n de vapores de n-propilamina en alfa-zrp. Con respecto al m\u00e9todo convencional (m\u00e9todo a, descrito en la memoria), este nuevo procedimiento de coloidizaci\u00f3n, facilita la intercalaci\u00f3n de especies oligom\u00e9ricas de cromo de mayor grado de polimerizaci\u00f3n en la regi\u00f3n interlaminar del fosfato. Mediante calcinaci\u00f3n en atm\u00f3sfera de nitr\u00f3geno, se obtuvieron los pilares de \u00f3xido de cromo (iii), siendo m\u00e1s microporosos y mesoporosos los preparados a partir del foafato completamente delaminado (m\u00e9todo b). Los pilares presentaron una acidez mixta de bronsted y lewis y una actividad exclusivamente deshidratante en el test de descomposici\u00f3n del 2-propanol. Se ha evaluado el comportamiento catal\u00edtico de los pilares de \u00f3xido de cromo (iii). Para ello, se han seleccionado dos reacciones. En la primera de ellas la deshidrogenaci\u00f3n de propano, tanto en condiciones inertes, como oxidativas, los pilares presentaron una alta actividad hacia la formaci\u00f3n de propeno, superior a la de otros catalizadores descritos en la bibliograf\u00eda operando a una mayor temperatura de reacci\u00f3n. En la segunda reacci\u00f3n la hidrodesulfuraci\u00f3n de tiofeno, los pilares presentaron una importante actividad, tanto en los catalizadores sulfarados como sin sulfurar, que es donde radica su originalidad.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Preparacion y propiedades cataliticas de pilares de oxido de cromo en alfa fosfato de circonio.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Preparacion y propiedades cataliticas de pilares de oxido de cromo en alfa fosfato de circonio. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Perez Reina Francisco Jose <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 M\u00e1laga<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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 Jimenez Lopez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan  Jose Rodriguez Jimenez <\/li>\n<li>Agustin Rodriguez Gonzalez-elipe (vocal)<\/li>\n<li> Viga Blanco Mar\u00eda  Luisa (vocal)<\/li>\n<li>Luis Alemany Arrebola (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Perez Reina Francisco Jose La memoria describe la s\u00edntesis, caracterizaci\u00f3n y propiedades cataliticas de preparados de los [&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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