Hydrocarbon Fractions
Mostrando 1-12 de 38 artigos, teses e dissertações.
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1. Study of the Effect of Inhibitors Solutions on the Chemical Composition of Waxes by Rheology Tests and High Resolution Mass Spectrometry
Wax deposit is of a great concern in the petroleum industry and causes partial or total blockage of the pipelines. In this work, four Brazilian crude oils (P1-P4) and five inhibitors solutions (I1-I5) were used associating rheology results to understand, at a molecular level, the characteristics of the saturated fractions by high-resolution mass spectrometry
J. Braz. Chem. Soc.. Publicado em: 2020-04
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2. CONVERSION OF SPENT FAT OIL INTO LIQUID AND GASEOUS FUELS THROUGH CLINKER CATALYZED PYROLYSIS
Abstract Repeated heating of fat oil may result in the formation of highly toxic aldehyde compounds. The oils having such compounds are considered as health hazards and therefore their repeated use is banned in many countries. Since huge quantities of the used oil need urgent disposal, this work is focused on the disposal of used oil for the resource recover
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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3. APCI(+)FT-ICR MS Analysis of Hydrocarbons Using Isooctane as Ionizing Reagent - A Comparison with HTGC-FID, GC×GC-MS and NMR
Hydrocarbons present in saturated fractions of crude oils can be assessed by atmospheric pressure chemical ionization (APCI) using small hydrocarbons as ionizing reagents in a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS). In this work, five paraffin standards of different average molar mass distributions (Mw) were easily ionized by
J. Braz. Chem. Soc.. Publicado em: 08/04/2019
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4. Biodegradation of kerosene: Study of growth optimization and metabolic fate of P. janthinellum SDX7
Penicillum janthinellum SDX7 was isolated from aged petroleum hydrocarbon-affected soil at the site of Anand, Gujarat, India, and was tested for different pH, temperature, agitation and concentrations for optimal growth of the isolate that was capable of degrading upto 95%, 63% and 58% of 1%, 3% and 5% kerosene, respectively, after a period of 16 days, at op
Braz. J. Microbiol.. Publicado em: 2015-06
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5. Best conditions for biodegradation of diesel oil by chemometric tools
Diesel oil biodegradation by different bacteria-yeast-rhamnolipids consortia was tested. Chromatographic analysis of post-biodegradation residue was completed with chemometric tools (ANOVA, and a novel ranking procedure based on the sum of ranking differences). These tools were used in the selection of the most effective systems. The best results of aliphati
Braz. J. Microbiol.. Publicado em: 11/04/2014
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6. CARACTERIZAÇÃO DO REJEITO FINOS DE XISTO E DO SUBPRODUTO CALCÁRIO DE XISTO DO PROCESSO PETROSIX
Neste trabalho apresentamos a compilação e a análise de diversos dados analíticos obtidos na caracterização do Finos de Xisto e do Calcário de Xisto, dois resíduos abundantes do processo Petrosix. Para garantir maior representatividade de resultados, analisam s amostras de Calcário de Xisto extraídas de cortes verticais completos da camada, e adota
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/05/2012
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7. Recovery of hydrocarbon liquid from waste high density polyethylene by thermal pyrolysis
Thermal degradation of waste plastics in an inert atmosphere has been regarded as a productive method, because this process can convert waste plastics into hydrocarbons that can be used either as fuels or as a source of chemicals. In this work, waste high-density polyethylene (HDPE) plastic was chosen as the material for pyrolysis. A simple pyrolysis reactor
Brazilian Journal of Chemical Engineering. Publicado em: 2011-12
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8. Avaliação geoquímica de óleos brasileiros com ênfase nos hidrocarbonetos aromáticos
Aromatic compounds are still poorly evaluated in geochemical studies of Brazilian oil samples. For this reason, the objective of this work was to analyze and evaluate 26 oil samples from four Brazilian sedimentary basins. Aromatic hydrocarbon fractions have been analyzed by gas chromatography coupled to mass spectrometry. The results were also compared with
Química Nova. Publicado em: 2011
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9. Efeitos de terpenos nas membranas de estrato córneo estudados por ressonância paramagnética eletrônica / Effects of terpenes on the stratum corneum membranes studied by electron paramagnetic resonance
The interaction of the skin penetration enhancers DL-menthol, -terpineol, 1,8-cineole and (+)-limonene with membranes of the uppermost skin layer, the stratum corneum (SC) and with multilamellar vesicles from 1,2-dipalmitoyl-sn-glycero-3-phosphaticylcholine (DPPC)is investigated by electron paramagnetic resonance (EPR) spectroscopy using spin-labeled
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/02/2008
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10. Obtenção e caracterização de filmes de TiO2 depositados sobre cerâmica de revestimento via magnetron sputtering DC
Titanium oxide (TiO2) under ultraviolet light becomes catalyst of chemical reactions. This phenomenon can be used to break down hydrocarbon and water molecules bound. Hydrocarbon was changing into water and carbon dioxide. Adsorbed water molecule is degraded by film and form a layer of adsorbed hydroxyl groups (OH), which are able to increase surface energy,
Publicado em: 2007
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11. Emissão de 14C pelas unidades I e II da Central Nuclear Almirante Álvaro Alberto (CNAAA) e seu efeito local nos níveis ambientais
14 C is a is a long-lived beta-emitting nuclide (T = 5730 years) produced naturally 1/2 14 14 14 in the upper atmosphere as a result of reactions between neutrons and stable N( N(n,p) C). 14 C as well during their routine Although in a lesser extent, nuclear power plants produce 14 operation. Since it is converted in CO and mixed throughout the atmosphere, i
Publicado em: 2006
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12. Desenvolvimento e aplicaÃÃo de modelos matemÃticos baseados em redes neurais artificiais e modelos estatÃsticos na prediÃÃo de propriedades fÃsico-quÃmicas da gasolina petroquÃmica
The production of petrochemical gasoline is simply carried out by the mixture of industrial hydrocarbon streams of different units of petrochemical processing. These streams must present a chemical composition that allows to reach a blend with a composition spectra like the gasoline. That is, the main difficult consists of determining of the best set of volu
Publicado em: 2003