Isooctane
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. 3D numerical investigation of mixture formation and combustion in a DISI engine at part-load under stratified operation
This work investigates through numerical simulation, the operation of a big bore direct fuel injection spark ignition engine, at part load under stratified operation. It evaluates fuel-air mixture preparation and combustion process with the adoption of detailed chemical kinetics mechanisms for both Isooctane and Ethanol, and applying adaptive mesh refinement
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2020
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2. 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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3. Extracellular proteases of Halobacillus blutaparonensis strain M9, a new moderately halophilic bacterium
Halophilic microorganisms are source of potential hydrolytic enzymes to be used in industrial and/or biotechnological processes. In the present study, we have investigated the ability of the moderately halophilic bacterium Halobacillus blutaparonensis (strain M9), a novel species described by our group, to release proteolytic enzymes. This bacterial strain a
Braz. J. Microbiol.. Publicado em: 25/02/2014
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4. Effects of process variables and additives on mustard oil hydrolysis by porcine pancreas lipase
Selective hydrolysis of brown mustard oil (from Brassica juncea) with regioselective porcine pancreas lipase was studied in this work. Buffer and oil phase were considered as the continuous and dispersed phases, respectively. Effects of speed of agitation, pH of the buffer phase, temperature, buffer-oil ratio and enzyme concentration on hydrolysis were obser
Braz. J. Chem. Eng.. Publicado em: 2012-09
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5. AdsorÃÃo de MolÃculas Sulfuradas AromÃticas em Adsorventes Mesoestruturados à Base de SÃlica. / Adsorption of aromatic sulfur molecules on mesostructured silica adsorbents.
The demand of a larger control in the emission of pollutants from automobiles, with a reduction in the emission of sulfur, has led to an intense research effort on techniques of sulfur removal from fuels. In the last few years, adsorption is thought to be a suitable polishing technique to achieve a deep desulfurization of streams from hydrodesulfurization (H
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
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6. Análise experimental da velocidade de combustão em motores de combustão interna
A velocidade de propagação da chama em motores ciclo Otto é determinante das características do combustível, sendo fundamental seu conhecimento para um melhor ajuste do par motor/combustível. Maior velocidade de propagação da chama possibilita aumentar a potência com o aumento da rotação do motor. Assim, pode-se inclusive atrasar o avanço de igni
Publicado em: 2011
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7. Avaliação dos tipos de processamento na descontaminação e na degradação do polipropileno reciclado / Evaluation of types of processing in the decontamination and degradation of recycled polypropylene
Polypropylene is one of the most used polymers worldwide, especially by the disposable packaging industry, causing serious environmental problems. Despite the fact that recycling this polymer has become common in Brazil due to its growing market, there are still some restrictions regarding its use in direct-contact food packaging. Therefore, in order to eval
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2010
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8. RemoÃÃo de tiofeno utilizando adsorventes preparados por mistura fÃsica
The need for cleaner fuels has increased that the studies aimed at reducing levels of sulfur in gasoline. The presence of sulfur compounds in fractions of oil is highly undesirable because it results in corrosion and environmental pollution. The hydrodesulfurization is the main process responsible for removing sulfur from most of the fuel industry of oil ref
Publicado em: 2008
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9. Migração de plastificantes e avaliação de propriedades mecânicas de filmes de poli(cloreto de vinila) para alimentos / Migration of plasticizers and evaluation on mechanical properties in poly(vinyl chloride) film into foods
The migration of packaging compounds can compromise the chemical and mechanical proprieties of the material, as well as causing toxicological problems with the consumer. The purpose of this work was to evaluate migration of plasticizers di-(2-ethylhexyl)phthalate (DEHP), di-(2-ethylhexyl)adipate (DEHA) and acetyl tributyl citrate (ATBC) used to produce poly(
Publicado em: 2007
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10. ExtraÃÃo lÃquido-lÃquido da lectina da entrecasca de Crataeva tapia l. utilizando micelas invertidas
The lectins are ubiquitous protein in the nature that reversibly bind to mono, oligo, polysaccharides and glycoconjugates. They do not present catalytic activity and unlike antibodies, are not products of immune reply. The aim of the present work was to evaluate the extraction and back-extraction of a lectin purified by ionic exchange chromatography (CrataBL
Publicado em: 2006
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11. Potencial de biocatálise enantiosseletiva de lipases microbianas
Microbial lipases have a great potential for commercial applications due to their stability, selectivity and broad substrate specificity because many non-natural acids, alcohols or amines can be used as the substrate. Three microbial lipases isolated from Brazilian soil samples (Aspergillus niger; Geotrichum candidum; Penicillium solitum) were compared in te
Química Nova. Publicado em: 2005-08
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12. Estudo experimental da evaporação de jatos de iso-octano superaquecido. / Experimental study of evaporating jets of superheated iso-octane.
The main goal of this thesis is to present results of experiments with flashing liquid jets of iso-octane. The experiments were carried out with a liquid jet issuing from a small nozzle into a low-pressure chamber. High degrees of metastability were obtained as the liquid jet expanded within the nozzle. Injection pressure and temperature were controlled to t
Publicado em: 2005