{"id":58653,"date":"2018-03-09T22:46:31","date_gmt":"2018-03-09T22:46:31","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-del-transporte-de-iones-metalicos-a-traves-de-una-membrana-cationica-mediante-cronopotenciometria\/"},"modified":"2018-03-09T22:46:31","modified_gmt":"2018-03-09T22:46:31","slug":"estudio-del-transporte-de-iones-metalicos-a-traves-de-una-membrana-cationica-mediante-cronopotenciometria","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/separacion-quimica\/estudio-del-transporte-de-iones-metalicos-a-traves-de-una-membrana-cationica-mediante-cronopotenciometria\/","title":{"rendered":"Estudio del transporte de iones met\u00e1licos a trav\u00e9s de una membrana cati\u00f3nica mediante cronopotenciometr\u00eda"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Luciano Marder <\/strong><\/h2>\n<p>El objetivo principal de la presente tesis doctoral es el estudio de las propiedades de transporte de diferentes iones met\u00e1licos (n\u00edquel, cobre, cinc, cobalto y manganeso), empleados en procesos de electrodeposici\u00f3n de n\u00edquel y sus aleaciones, a trav\u00e9s de una membrana de intercambio cati\u00f3nico comercial (ionics 67-hmr-412).     para la obtenci\u00f3n de las propiedades de transporte de estos metales se utiliz\u00f3 la cronopotenciometr\u00eda, que es un m\u00e9todo de caracterizaci\u00f3n electroqu\u00edmico, mediante el cual se aplica un pulso de intensidad entre dos electrodos dispuestos en los extremos de un reactor electroqu\u00edmico, y se mide la ca\u00edda del potencial a trav\u00e9s de la membrana en r\u00e9gimen no estacionario. El estudio se llev\u00f3 a cabo en distintas etapas, de acuerdo con la configuraci\u00f3n del reactor electroqu\u00edmico y de las disoluciones empleadas. Se utilizaron rectores electroqu\u00edmicos de dos y tres compartimentos y electrodos de grafito o de ag\/agcl, dependiendo de la configuraci\u00f3n del reactor electroqu\u00edmico utilizado. en primer lugar se trabaj\u00f3 con disoluciones del cloruro de sodio, que son las que se utilizan normalmente en estudios cronopotenciom\u00e9tricos y para las cuales se dispone de datos relativos a las propiedades de transporte a trav\u00e9s de la membrana. posteriormente se trabaj\u00f3 con los dem\u00e1s iones met\u00e1licos en medio sulfato y cloruro, y con disoluciones del cloruro de n\u00edquel a las que se a\u00f1adi\u00f3 \u00e1cido b\u00f3rico, cloruro de amonio o hipofosfito s\u00f3dico, que son los aditivos que acompa\u00f1an al n\u00edquel en los procesos de electrodeposici\u00f3n de este metal. los datos de potencial-tiempo obtenidos se emplearon para obtener los valores de la corriente l\u00edmite y del n\u00famero de transporte de los distintos metales a trav\u00e9s de la membrana de intercambio i\u00f3nico. Adem\u00e1s, estos datos proporcionaron informaci\u00f3n adicional relativa al sistema de medida adoptado, como informaci\u00f3n relacionada con la heterogeneidad de la membrana, con los efectos secundarios causa<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio del transporte de iones met\u00e1licos a trav\u00e9s de una membrana cati\u00f3nica mediante cronopotenciometr\u00eda<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio del transporte de iones met\u00e1licos a trav\u00e9s de una membrana cati\u00f3nica mediante cronopotenciometr\u00eda <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Luciano Marder <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 25\/05\/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>Valentin Perez Herranz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jos\u00e9 Garc\u00eda ant\u00f3n <\/li>\n<li>denise Schermann azambuja (vocal)<\/li>\n<li>jane Zoppas ferreira (vocal)<\/li>\n<li>idalina Vieira aoki (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Luciano Marder El objetivo principal de la presente tesis doctoral es el estudio de las propiedades de 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