Chlorobenzene
Mostrando 1-12 de 51 artigos, teses e dissertações.
-
1. Polydimethylsiloxane as a Matrix for the Stabilization and Immobilization of Zero-Valent Iron Nanoparticles. Applications to Dehalogenation of Environmentally Deleterious Molecules
A wet-synthetic method is described to obtain magnetic, air-stable, zero-valent iron nanoparticles coated with an alkanedioic acid. The particles can be immobilized in an amino-substituted polysiloxane matrix to provide materials capable of dechlorinating, debrominating, and deiodinating a wide variety of halogenated organic molecules dissolved initially in
J. Braz. Chem. Soc.. Publicado em: 2018-07
-
2. AVALIAÇÃO DO DESEMPENHO DE UMA FASE SENSORA DE POLIURETANO POR MEIO DA ENERGIA DE GIBBS DE SOLVATAÇÃO E ESPECTROSCOPIA DE INFRAVERMELHO PARA DETERMINAÇÃO DE TOLUENO EM ÁGUA
A novel sensing phase of polyurethane was predicted by quantum chemical calculations as capable of detecting toluene, with the experimental results revealing a limit of detection of 1.4 mg L-1 in the determination of toluene in water samples. The quantum chemical computational strategy was validated by assessing the impact of the polymer matrix sensing phase
Quím. Nova. Publicado em: 2018-04
-
3. Development of palladium nanoparticle catalysts for hydrodechlorination reaction / Desenvolvimento de catalisadores de paládio nanoparticulado para a reação de hidrodescloração
The hydrodechlorination reaction (HDC) has received great attention as an alternative treatment of organic residues, which is more efficient than incineration, especially for aromatic organic compounds, and avoids the formation of toxic species, such as furans and dioxins. The present study is focused on the preparation of supported palladium nanocatalysts f
Publicado em: 2009
-
4. Análise teórica da superfície Si(111)-(7x7)
In this work, wecarry out theoretical study of the silicon surface reconstruction (7x7) grown in the [111] direction, denoted by Si(111)(7x7), using the Density Functional Theory formalism, within the Local Density Approximation (LDA) for the exchange correlation term. The interaction with the valence electrons and the core ion (nucleus more core electrons)
Publicado em: 2007
-
5. Desenvolvimento e validação de metodo analitico para a determinação de contaminantes volateis provenientes de embalagens de PET (polietileno tereftalato) e sua aplicação em PET pos-consumo. / Development and validation of an analytical method for the determination of volatile contaminants from PET (polyethylene terephtalate) packaging and its application in PET post-consumption.
The main approach of the present work was the development and validation of an analytical method for the determination of volatile contaminants from polyethylene terephthalate (PET) packaging, using the headspace dynamic concentration technique in the extraction stage and chromatographic techniques for identification and quantification. The method was valida
Publicado em: 2007
-
6. AnÃlise teÃrica da superfÃcie Si(111)-(7x7)
Neste trabalho, realizamos o estudo teÃrico da reconstruÃÃo (7x7) da superfÃcie de SilÃcio crescida na direÃÃo [111], denotada por Si(111)â(7x7), utilizando para isto o formalismo da Teoria do Funcional da Densidade, com a AproximaÃÃo da Densidade Local (LDA - LocalDensityApproximation) para o termo de trocaâcorrelaÃÃo. A interaÃÃo entre os el
Publicado em: 2007
-
7. Desenvolvimento de uma sistematica para SPME-GC com injetores de controle eletronico
In this work the effects of the injection parameters for the application of Gas Chromatography with Pulsed Splitless Injection (PSI GC) to Solid Phase Microextraction (SPME) using extracting fibers coated with films with different properties - polydimethylsiloxane - PDMS (extraction by partition) and polydimethylsiloxane / divinylbenzene - PDMS-DVB (extracti
Publicado em: 2004
-
8. Preparation of highly dispersed Ru-Sn bimetallic supported catalysts from the single source precursors Cp(PPh3)2Ru-SnX3 (X = Cl or Br)
In this work highly dispersed Ru-Sn bimetallic catalysts have been prepared from organobimetallic Cp(PPh3)2Ru-SnX3 (X = Cl or Br) complexes. These single source precursors can be easily impregnated in high surface area supports, such as activated carbon and sol-gel SiO2, and upon controlled thermal treatment the ligands are released as volatile products resu
Materials Research. Publicado em: 2003-06
-
9. Transition metals supported on al-pilcs as catalysts for C6H5Cl oxidation
In the present work, clays pillared with aluminium and impregnated with transition metals (Fe, Co and Cr) were prepared, characterised and studied as catalysts in the oxidation of chlorobenzene. The pillared clay was synthesised using a natural montmorillonite from San Juan (Argentina) as the starting material and an aluminium polycation solution. The cataly
Brazilian Journal of Chemical Engineering. Publicado em: 2003-03
-
10. Determinação experimental de dados de equilibrio liquido-vapor de misturas de solventes e pesticidas
This work presents a contribution to vapor-liquid equilibrium of pollutant substances, mainly solvents and pesticides. The systems were composed by solvents and intermediary compounds of pesticides formation as DDT (benzene, cyclohexane and chlorobenzene). It was studied four systems at two of pressures 300 and 760 mmHg being three binaries (benzenecyclohexa
Publicado em: 1998
-
11. Effect of variation of exposure to airborne chlorobenzene on internal exposure and concentrations of urinary metabolite.
OBJECTIVES--This study aimed to develop a physiologically based pharmacokinetic model for chlorobenzene and to investigate the effect of variation in exposure to chlorobenzene on the chlorobenzene concentration in blood and the urinary concentration of 4-chlorocatechol. METHODS--A physiologically based pharmacokinetic model was developed and the simulated re
-
12. Microbial metabolism of haloaromatics: isolation and properties of a chlorobenzene-degrading bacterium.
A chlorobenzene-degrading bacterium was isolated by continuous enrichment from a mixture of soil and sewage samples. This organism, strain WR1306, was grown in a chemostat on a mineral medium with chlorobenzene being supplied through the vapor phase with a critical Dc value at a dilution rate of 0.55 h-1. Maximum growth rates in batch culture were accomplish