Síntesis asistida por microondas de sólidos inorgánicos

The use of microwaves to produce inorganic solids is an attractive option because of potential benefits: energy saving, short processing times, increased product yields, economy and environment friendly, and so on. In a microwave process, there is an inverse heating profile as compared to convention...

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Veröffentlicht in:Anales de la Real Sociedad Española de Química 2011 (2), p.129-136
Hauptverfasser: Morán Miguélez, Emilio, Prado-Gonjal, Jesús
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Sprache:spa
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Zusammenfassung:The use of microwaves to produce inorganic solids is an attractive option because of potential benefits: energy saving, short processing times, increased product yields, economy and environment friendly, and so on. In a microwave process, there is an inverse heating profile as compared to conventional methods: the heating occurs by energy conversion rather than energy transfer. In this work different approaches to the synthesis of materials have been followed: direct solid state reaction, performed in a domestic set-up (NiO, LaMO3, RECrO3 ), solvothermal synthesis by using a more sophisticated apparatus (ã-AlOOH, BiFeO3). Sol-gel and combustion methods combined with microwaves are also described La utilizacion de radiacion microondas para la sintesis de solidos inorganicos presenta grandes beneficios: ahorro energetico, tiempos cortos de procesado, mayor rendimiento, procedimiento economico y respetuoso con el medio ambiente, etcetera. En un proceso de sintesis por microondas existe un perfil inverso de temperatura comparado con los metodos convencionales: el calentamiento ocurre por conversion en lugar de por transferencia de energia. En este trabajo se muestran diferentes rutas de sintesis en las que se ha empleado radiacion microondas: estado solido con un microondas domestico (NiO, LaMO3, TRCrO3, c), sintesis solvotermal empleando un aparato mas sofisticado ( Á-AlOOH, BiFeO3). Tambien se describen casos en los que se combina sol-gel o combustion con microondas.
ISSN:1575-3417