Estudo cinético da formação de hidrocarbonetos aromáticos durante a combustão da gasolina

• Autor(a) principal: Costa, Moises Silva da
• Data de Publicação: 2018
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/15837
• topic: Gaseous emissions; particulate matter; nitro-PAHs; combustion of ethanol-gasoline mixtures; kinetic models of combustion; Emissões; material particulado; nitro-HPA; combustão etanol-gasolina; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICA::ANALISE DE TRACOS E QUIMICA AMBIENTAL

Emissions of pollutants from the fuels combustion in car engines has been the subject of studies aimed to reduce the pollutants emissions in the environment. One strategy to reduce the pollutants emissions was the addition of ethanol to comercial gasoline, wichledto several studies conducted in order to understand the behavior of the ethanol/gasoline blend during the combustion process. It is known that this mixture contributed to the reducing of particulate matter, PM10, but otherwise, increases the concentration of particles diameter lower than 2.5 µm. Various studies have demonstrated that such particles can reach the pulmonary alveoli and contains carcinogenic and mutagenic molecules, such as PAH their alkyl and nitro derivatives are aggregated in these particles. In this study, the modeling and simulation of kinetic models of gasoline will be performed. The channels that leads to the formation and decomposition of PHA and nitro-PHA will be analyzed in conjunction with the conditions, temperature, oxygen and ethanol concentration that favor the formation of these compounds. For the first time nitration reactions of aromatic compounds were included in a kinetic model of combustion and the polynomials that describe heat capacity, enthalpy and entropy calculated