Eletrochemistry
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Influencia de compostos carboxilicos e ions metalicos na degradação de neurotransmissores / Influence of carboxylate and metal ions on the degradation of neurotransmitters
Several neurological disorders are associated with improper catechoalmine regulation in the brain. Numerous researches have indicated that metallic ions can induce oxidative stress-dependent neurodegeneration of dopamine, and are responsible for the induction of neurodegenerative diseases. In previous work was verified that some carboxylates diminishes the o
Publicado em: 2007
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2. Estudo eletroquimico do efeito de surfactantes na eletrogeração de peroxido de hidrogenio / Eletrochemistry study of surfactants effect in hydrogen peroxide electrosynthesis
Este trabalho apresenta o estudo do comportamento dos surfactantes catiônicos cloreto de tricaprilmetilamônio (Aliquat® 336) e cloreto de metiltributilamônio (Aliquat® 175) na eletrossíntese de peróxido de hidrogênio. Inicialmente, foram realizados experimentos de medida de tensão superficial pelo método do anel de du Noüy, com o objetivo de encon
Publicado em: 2007
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3. Sintese , caracterizaÃÃo e eletroatividade de sams formadas com compostos catiÃnicos de tetraaminas de rutÃnio / Synthesis, characterization and eletroatividade of sams formed with composites catiÃnicos of tetraaminas of rutÃnio
Trans-[Ru(CNpy)(NH3)4(L)]2+ type complexes, where CNpy (4- Cyanopyridine), L= 1,4-dt (1,4-dithiane), pyS (4-mercaptopyridine), and Tio (thionicotinamide), were synthesized and characterized by HPLC, microanalysis, eletrochemistry and vibrational and eletronic spectroscopies. The eletrochemical and eletronic absorption results are indicative of a π back-
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/09/2006
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4. Estudo de propriedades eletricas e caracteristicas fisico-quimicas do polipirrol obtido por sintese fotoquimica
The scientific and technological interest for the conducting polymers has increased for the fact of the possibility aplications in substitute to traditional metals. Emphasize the Polianilin, Politiofen, Poli(p-fenilen) and Polypyrrole and its derivatives. The Polypyrrole (PPy) can be obtained by chemistry synthesis, eletrochemistry and more recendy photochem
Publicado em: 2002
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5. Caracterização eletroquímica e ótica de filmes de óxido espesso crescidos sobre ouro. / Eletrochemical and optical characterization of thick oxide films on gold electrodes.
Potentiostatic polarization of polycrystalline Au electrodes at various polarization potentials, 1.8, ..., 2.4 V, RHE, for polarization times up to 72h, in acid and basic solutions, leads to formation of four oxide states, OC1, OC2, OC3 and OC4, distinguished, in reduction, using linear-sweep voltammetry. The quasi-2d state (OC1) tends to the limit of two mo
Publicado em: 1995
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6. Estudo de reatividade na redução eletrolítica de alguns α-cetoesteres em metanol, com eletrodos de platina / Study of the reactivity of the electrolytic reduction of some α-ketoesters in methanol, with platinum electrodes
The present work describes the syntheses of some aliphatic and aromatic α-hydroxy - and α-keto-methyl esters and reports the electrolyses of the latter, in methanol, at a platinum cathode Some simple electrolytic experiments, varying the experimental conditions as well as those in which the transformations occurring during the electrolyses were fol
Publicado em: 1974