Aluminum Polyphosphate Gel
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Polyphosphate Gels Applied to Electrochemical Devices Assembling / AplicaÃÃo de gÃis de polifosfatos à construÃÃo de dispositivos eletroquÃmicos
Hybrid materials between aluminum and iron polyphosphate gels, polyaniline and carbon materials were synthesized and were used as electrode materials to assemble electrochemical devices. The aluminum and iron polyphosphate gels, the carbon materials as well as the hybrids obtained between these materials and polyaniline were characterized by thermogravimetri
Publicado em: 2008
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2. Polyphosphate hybrid materials: photochemistry, (di)electric characterization and its application in electrochemical capacitors / Materiais hÃbridos de polifosfatos: fotoquÃmica, caracterizaÃÃo (di)elÃtrica e sua utilizaÃÃo em capacitores eletroquÃmicos
The synergy between the properties of two substances, an organic and another inorganic, can be obtained in a single material by the sol-gel process. The low temperature processing allow the incorporation of organic substances in inorganic matrices. These hybrid materials can have covalent interactions between host and guest (C1), or weak interactions, like v
Publicado em: 2008
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3. Aluminum polyphosphate gels structural evolution probed by NMR spectroscopy
Neste trabalho é apresentada a evolução estrutural de géis de polifosfato de alumínio, desde a associação das espécies que leva à gelatinização, e prosseguindo pelas etapas de envelhecimento e secagem. As alterações nas espécies formadoras da rede foram acompanhadas por RMN de 31P e 27Al, tanto em solução quanto no estado sólido. Verificou-s
Journal of the Brazilian Chemical Society. Publicado em: 2003-12
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4. Dye incorporation in polyphosphate gels: synthesis and theoretical calculations
In this work we described theoretical calculations on the electronic structure and optical properties of the dyes crystal violet and malachite green based in semiempirical methods (Parametric Method 3 and Intermediate Neglect of Differential Overlap / Spectroscopic - Configuration Interaction) and the synthesis of a new hybrid material based upon the incorpo
Materials Research. Publicado em: 2003-06
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5. Gelificação termorreversivel em soluções aquosas de polifosfato de aluminio
Admixture of aqueous sodium polyphosphate solutions and aluminum salts (nitrate, sulfate and chloride) lead to the formation of thermoreversible gels. Gels formed above roam temperature change back to clear solutions, upon cooling. For some compositions, gel formation happens at roam temperature. This behavior was observed in polymeric systems, but it has no
Publicado em: 1995