Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Márcio das Virgens Rebouças"'
Autor:
Neirivaldo Cavalcante da Silva, Celio Pasquini, Márcio das Virgens Rebouças, José Manuel Amigo, Ana Rosa C. G. Massa, Daniela Domingos, Maria Fernanda Pimentel
Publikováno v:
Fuel. 243:381-389
This work addresses the industrial process of compounding automotive gasoline by a controlled blending of feedstock hydrocarbon streams deriving from different stages of the cracking and refining process of naphtha. In this process, gasoline quality
Autor:
Celio Pasquini, Márcio José Coelho Pontes, Maria Fernanda Pimentel, Márcio das Virgens Rebouças, Vitor Hugo da Silva, Alan Rocha Salles
Publikováno v:
Fuel Processing Technology. 131:230-237
Naphtha is an important feedstock for the petrochemical industry and accurate measurement of its detailed composition is essential for the optimization of pyrolysis processes. In the present work, the suitability of using near infrared (NIR) for the
Autor:
Ana Rosa C. G. Massa, Daniela Domingos, Leonardo S. G. Teixeira, Maria de Lourdes S. Ferreira Neta, Márcio das Virgens Rebouças
Publikováno v:
Journal of the Brazilian Chemical Society.
A petrochemical effluent is usually a matrix of very high complexity and composition variability, requiring robust and suitable methods for routine analysis. In this paper, the feasibility of applying a voltammetric technique for the determination of
Publikováno v:
Química Nova, Vol 35, Iss 8, Pp 1644-1656 (2012)
Química Nova v.35 n.8 2012
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova v.35 n.8 2012
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Although metals and nitrogen/sulfur compounds have been the main concern of the petroleum industry, issues concerning the harmful effects on catalysts poisoning and product contamination by other contaminants such as oxygen-containing compounds have
Autor:
Márcio das Virgens Rebouças, Fernanda S. V. Vieira, Fabio Alexandre Chinalia, Iracema Andrade Nascimento, Marcos Vinicio A. de Almeida, Vinicius Queiroz Araújo, Solange Andrade Pereira
Publikováno v:
Bulletin of Environmental Contamination and Toxicology. 88:234-238
The water-soluble-fractions (WSF) from biodiesel and biodiesel/diesel blends were compared to diesel in their sub-lethal toxicity to microalgae. Chemical analyses of aromatics, non-aromatics hydrocarbons and methanol were carried out in the WSF, the
Autor:
Leonardo S. G. Teixeira, Márcio das Virgens Rebouças, Jamile Batista dos Santos, Maria Fernanda Pimentel
Publikováno v:
Chemometrics and Intelligent Laboratory Systems. 107:185-193
Alternative methods for quality control in the petroleum industry have been obtained using Near-infrared Spectroscopy (NIRS) combined with multivariate techniques such as PLS (Partial Least-Square). The process of development and refinement of PLS mo
Autor:
Alex S. N. Trindade, Márcio das Virgens Rebouças, Leonardo S. G. Teixeira, Maria Fernanda Pimentel, Denise Sousa Brandão
Publikováno v:
Vibrational Spectroscopy. 55:172-182
Near-infrared spectroscopy (NIRS) combined with chemometric techniques has provided fast and precise methods for quality control in the petrochemical industry. In the present work, NIRS multivariate models were used to predict the chemical compositio
Autor:
Márcio das Virgens Rebouças, Daniela Domingos, Ana Rosa C. G. Massa, Jamile Batista dos Santos
Publikováno v:
Vibrational Spectroscopy. 52:97-102
The use of near-infrared spectroscopy, combined with chemometrics methods for data treatment, has been widely used in the petrochemical industry obtaining fast and precise methods suitable for quality control. In the present work, near-infrared spect
Autor:
Celio Pasquini, Emerson Vidal de Aquino, Fabiano Barbieri Gonzaga, Márcio das Virgens Rebouças
Publikováno v:
Analytica Chimica Acta. 600:84-89
A flow-batch system was constructed and evaluated to perform coulometric titrations with biamperometric end point detection. The flow section of the system is employed for sampling by injecting a sample volume (50-300 microL) in a flow injection-like
Publikováno v:
Vibrational Spectroscopy. 44:187-191
Near-infrared spectroscopy multivariate calibration models were used to predict physical and chemical properties of medium naphtha samples providing the means of appropriate process control of naphtha fractioning units. Relative density, distillation