Catalytic Converter
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. A Gas Chromatography Method for Simultaneous Quantification of Inorganic Gases and Light Hydrocarbons Generated in Thermochemical Processes
This paper reports a method for simultaneous determination of H2, O2, N2, CO, CO2, CH4, C2H2, C2H4, C2H6, C3H4 (propadiene and propyne), C3H6, C3H8 and C4H10 (n-butane and isobutane) by gas chromatography using thermal conductivity and flame ionization detectors. A single porous layer open tubular column (0.53 mm internal diameter ? 30 m length ? 30 µm thic
J. Braz. Chem. Soc.. Publicado em: 2021-06
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2. Emissions of Criteria and Non-Criteria Pollutants by a Flex-Fuel Motorcycle
While criteria pollutants have established emission limits for motorcycles in Brazil, aldehydes limits have not been established and conclusive studies have not been found in the existing literature, despite the growing number of motorcycles using flex fuel in Brazil. This work presents results for the emissions of criteria pollutants, such as carbon monoxid
J. Braz. Chem. Soc.. Publicado em: 2016-12
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3. Efeito da temperatura e da adição de sais inorgânicos na pirólise analítica de resíduo de tabaco
Combustíveis menos poluentes e originados de fontes renováveis, como a biomassa, são alternativas energéticas. Atualmente cerca de 4000t/ano de resíduo de tabaco são geradas no Brasil e a pirólise rápida _e uma opção para se converter biomassa em combustíveis, no caso o bio-óleo, que pode ser também fonte de compostos com valor agregado. O prese
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2012
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4. Dynamic optimization of a FCC converter unit: numerical analysis
Fluidized-bed Catalytic Cracking (FCC) is a process subject to frequent variations in the operating conditions (including feed quality and feed rate). The production objectives usually are the maximization of LPG and gasoline production. This fact makes the FCC converter unit an excellent opportunity for real-time optimization. The present work aims to apply
Brazilian Journal of Chemical Engineering. Publicado em: 2011-03
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5. Avaliação da atividade catalítica de óxidos cerâmicos na conversão de óleos vegetais / Evaluation of catalytic activity of ceramic oxides on the conversion of vegetable oils
Contaminantes orgânicos são um dos principais problemas relacionados à poluição das águas e do meio ambiente. Atualmente, os óleos vegetais representam um aspecto importante nesse tipo de poluição. A busca por novas alternativas para o tratamento adequado dos efluentes de compostos orgânicos deve ser considerada como uma prioridade dos profissionai
Publicado em: 2011
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6. Study of the emission of the fleet of vehicles diesel and cycle Otto, without the catalytic converters in the cities of Sorocaba and Votorantim / Estudo da emissão da frota de veículos diesel e ciclo Otto, sem conversores catalíticos, nos municípios de Sorocaba e Votorantim
This study evaluates by means of a IEV - inventory of vehicle emission to propagate, the contribution of motor vehicles in air pollution in the cities of Sorocaba and Votorantim, of the emphasis to the characteristics of the fleet and the geographic position of these cities, to the impacts of these characteristics, the quantification and qualification of the
Publicado em: 2009
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7. Estudo comparativo das emissões de aldeídos originados pelo veículo à diesel com o uso do óleo diesel comercial, biodiesel e suas misturas / Comparative study of aldehyde emissions generated by Diesel vehicles using of commercial diesel fuel, biodiesel and their mixtures
Since of the automotive diesel fuel contains 2% biodiesel and there exists no regulation of emissions of aldehydes of Diesel cycle vehicles, this paper aims to evaluate the emissions of aldehydes of such a category of vehicles, using diesel oil with 2% biodiesel (B2) and 100% soybean biodiesel (B100) as fuel. It also aims to evaluate the emissions of aldehyd
Publicado em: 2009
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8. Análises experimental, teórica e computacional do escoamento dos gases de exaustão no conversor catalítico platina/paládio instalado em um motor de combustão interna a etanol / Experimental, theoretical, and computational analysis of exhaust gases flow in catalytic converter platinum-palladium of internal combustion engine burning ethanol
O trabalho consiste em análises experimental, teórica e computacional do escoamento dos gases de exaustão através de um conversor catalítico platina-paládio, instalado num motor de combustão interna movido a etanol. Foram realizados ensaios dinanométricos no motor para análise das medidas experimentais no sistema de exaustão e para aquisição de v
Publicado em: 2006
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9. Mutation of the myosin converter domain alters cross-bridge elasticity
Elastic distortion of a structural element of the actomyosin complex is fundamental to the ability of myosin to generate motile forces. An elastic element allows strain to develop within the actomyosin complex (cross-bridge) before movement. Relief of this strain then drives filament sliding, or more generally, movement of a cargo. Even with the known crysta
The National Academy of Sciences.
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10. Reduction of digoxin to 20R-dihydrodigoxin by cultures of Eubacterium lentum.
The anaerobic bacterium Eubacterium lentum, a common constituent of the intestinal microflora, inactivates digoxin by reducing the unsaturated lactone ring. Reduction of the cardiac glycoside by growing cultures of E. lentum ATCC 25559 proceeded in a stereospecific manner, with the 20R-dihydrodigoxin constituting more than 99% of the product formed. This is
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11. Superiority of interconvertible enzyme cascades in metabolic regulation: Analysis of multicyclic systems
Escherichia coli glutamine synthetase and glycogen phosphorylase are prototypes for models of “closed” and “opened” bicyclic cascade systems. Steady-state functions relating the fractional activation of interconvertible enzymes to the concentrations of allosteric effectors and to the catalytic constants of the several converter enzymes in such cascad