Carbon Felt
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Ag@Activated Carbon Felt Composite as Electrode for Supercapacitors and a Study of Three Different Aqueous Electrolytes
The main challenge for the development of a high efficiency supercapacitor is the electrode material. Developing electrode materials with high specific electrical capacitance and low electrical resistance enables an increase in the energy accumulated in the device. In addition, it is expected that the electrode material presents a simple procedure for prepar
Mat. Res.. Publicado em: 08/11/2018
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2. Production and Characterization of Activated Carbon Fiber from Textile PAN Fiber
ABSTRACT: This paper presents the preparation and characterization of carbon fiber felt and activated carbon fiber felt from textile polyacrylonitrile fiber. Carbon fibers are usually related to aircraft manufacturing or high mechanical purposes. Activated carbon fibers are known as excellent adsorbent materials. Despite all advantages, carbon fiber and acti
J. Aerosp. Technol. Manag.. Publicado em: 02/10/2017
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3. Degradação de corantes têxteis e remediação de resíduos de tingimento por processos Fenton, foto-Fenton e eletro-Fenton
In this work the degradation of textile dyes were evaluated, using Fenton, photo-Fenton and electro-Fenton processes. Under optimized conditions Fenton and photo-Fenton processes showed high decolorization capacity of the model dyes. The electro-Fenton process was carried out in an undivided electrochemical reactor (1000 mL) equipped with a carbon-felt catho
Química Nova. Publicado em: 2012
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4. Filtro a base de nanofibras de carbono para sequestro de enxofre em efluentes gasosos ricos em H2S / Carbon nanofibers based filter to sulfur removal from efluents rich in H2S.
Over the last few decades, sulfur recovery from the H2S-containing acid gases have become more and more important due to the ever increasing standards of efficiency required by environmental protection measures. The general trend is to selectively transform H_2S into elemental sulfur which is a valuable product, by the modified Claus process. However, due to
Publicado em: 2009
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5. Electrochemical nitric oxide sensor based on conducting polymers / Sensores eletroquímicos de óxodo nítrico baseados em polímeros condutores
In this work, electrochemical sensors for nitric oxide (NO) amperometric detection were prepared. For this purpose nickel tetrasulfonated phthalocyanine (NiTsPc) and poly(5-amino 1-naphthol) (poly(5-NH2 1-NAP)) modified with cytochrome c were applied. NiTsPc was electropolymerized by cyclic voltammery at platinum electrode and were electrochemically characte
Publicado em: 2009
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6. Materiais micro e nanoestruturados para sensores de íons do tipo EGFET / Micro and nanostructured materials for EGFET ion sensor.
Este trabalho descreve os resultados do estudo de materiais como óxido de manganês, nanotubos de carbono e feltro de carbono (puro e recoberto com nanotubos ou polianilina-Pani), assim como do desenvolvimento de dispositivos. Os dispositivos estudados estão relacionados a sensores de pH, utilizando esses materiais como membranas seletivas de H+ . Essas me
Publicado em: 2009
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7. Preparación electroquímica de electrodos bimetálicos PtRu soportados sobre sustratos carbonosos y su caracterización para la oxidación de metanol en medio ácido
In this work the influence of the electrochemical oxidation of different carbon substrates, such as glassy carbon, graphite cloth, graphite felt, and carbon fiber paper, on the electrodeposition of bimetallic PtRu catalysts was studied. The oxidation of the different substrates prior to the catalyst deposition, leads to remarkable improvement of catalyst dis
Matéria (Rio de Janeiro). Publicado em: 2008-06
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8. POTENCIAL DO Lupinus albescens Hook. &Arn. PARA RECUPERAÇÃO DE SOLOS ARENIZADOS DO BIOMA PAMPA.
As the productive processes move forward on the sandy soils of the Southwest region of Rio Grande do Sul, the arenização has been assuming relevance as factor of soil and regional ecosystem degradation. Contention measures should be established to avoid the progress of the arenização focuses and to recover the areas already damaged. Among these strategie
Publicado em: 2007
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9. Novos materiais à base de nanofibras de carbono como suporte de catalisador na decomposição da hidrazina
Today satellites propulsion is based on the use of monopropellant and/or bipropellant chemical systems. The maneuvering of satellite is based on the hydrazine decomposition micropropulsors catalyzed by metallic iridium supported on g-alumina. This reaction is a surface reaction and is strongly exothermic and implies that the operation of the micropropulsor i
Química Nova. Publicado em: 2003-10
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10. Biological monitoring of occupational exposure to tetrahydrofuran.
Occupational exposure to tetrahydrofuran (THF) was studied by analysis of environmental air, blood, alveolar air, and urine from 58 workers in a video tape manufacturing plant. Head space gas chromatography (GC) with an FID detector was used for determination of THF concentration in alveolar air, urine, and blood. Environmental exposure to THF was measured b