PROCESS FOR PREPARING COMPLEX METAL OXIDES

The invention relates to a process for preparing simple and complex metal oxides. According to the invention, the process comprises the decomposition of metal-polysaccharide precursors at temperatures of at least 400°C, for 1...10 h, where the polysaccharide is selected from starch, methyl-cellulose...

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Hauptverfasser: IANCULESCU ADELINA-CARMEN, TUDOSE MADALINA, STEFANESCU CARMEN, MAZILU CLAUDIU OCTAVIAN, SOCOTEANU GRETA MIHAELA, JURCA ALINA, VISINESCU DIANA BEATRICE, CARP OANA, BUDRUGEAC PETRU, CUCOS ANDREI, JURCA BOGDAN
Format: Patent
Sprache:eng ; rum
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Zusammenfassung:The invention relates to a process for preparing simple and complex metal oxides. According to the invention, the process comprises the decomposition of metal-polysaccharide precursors at temperatures of at least 400°C, for 1...10 h, where the polysaccharide is selected from starch, methyl-cellulose, alginate, carrageenan, the precursors being obtained in an aqueous medium, by the reaction between some metal sources and polysaccharide-type carbon hydrates having the role of coordination , encapsulation, stabilization agents and templates of metal cations. Invenţia se referă la un procedeu de obţinere a unor oxizi metalici simpli şi complecşi. Procedeul conform invenţiei constă din descompunerea, la temperaturi de minimum 400°C, timp de 1...10 h, a unor precursori de metal-polizaharidă, în care polizaharida este aleasă dintre amidon, metilceluloză, alginat, caragenean, precursorii fiind obţinuţi în mediu apos, prin reacţia unor surse de metal cu carbohidraţi de tip polizaharidă, care funcţionează ca agenţi de coordinare, încapsulare, stabilizare şi template a cationilor metalici.