Fischer Tropsch Synthesis
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Effect of PVA Concentration on Structure and Performance of Precipitated Iron-Based Catalyst for Fischer-Tropsch Synthesis
Fe2O3 catalysts were prepared by co-precipitation method with the assistance of polyvinyl alcohol (PVA) for Fischer-Tropsch synthesis. Effects of PVA concentration on structure and performance of the catalyst were investigated in a fixed reactor at 230-310 °C, 1.5 MPa, 2000 h-1, and syngas H2/CO = 2.0. The catalysts were characterized by N2 adsorption, scan
J. Braz. Chem. Soc.. Publicado em: 2017-08
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2. Surfactant-Assisted Preparation of FeCu Catalyst for Fischer-Tropsch Synthesis
FeCu catalysts were prepared by co-precipitation method with or without the assistance of the surfactant, polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA) or polyethylene glycol (PEG). The effect of surfactant on the structure and catalytic behavior of FeCu catalysts was investigated. The catalysts were characterized by inductively coupled plasma (ICP
J. Braz. Chem. Soc.. Publicado em: 2015-07
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3. The role of zeolites in the deactivation of multifunctional fischer-tropsch synthesis catalysts: the interaction between HZSM-5 and Fe-based Ft-catalysts
In order to produce gasoline directly from syngas, HZSM-5 can be added to the Fischer-Tropsch catalyst. However, this catalytic system shows an important deactivation rate. Aiming at describing this phenomenon, Fe-based catalysts and physical mixtures containing these catalysts and HZSM-5 were employed in this reaction. All these systems were characterized u
Braz. J. Chem. Eng.. Publicado em: 2013-12
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4. Valorization of agroindustrial solid residues and residues from biofuel production chains by thermochemical conversion: a review, citing Brazil as a case study
Besides high industrial development, Brazil is also an agribusiness country. Each year about 330 million metrics tons (Mg) of biomass residues are generated, requiring tremendous effort to develop biomass systems in which production, conversion and utilization of bio-based products are carried out efficiently and under environmentally sustainable conditions.
Braz. J. Chem. Eng.. Publicado em: 2013-06
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5. Óxidos de ferro e suas aplicações em processos catalíticos: uma revisão
A review of most of the reported studies on the use of iron oxides as catalyst in specific processes, namely Haber-Bosch reaction, Fischer-Tropsch synthesis, Fenton oxidation and photolytic molecular splitting of water to produce gaseous hydrogen, was carried out. An essential overview is thus presented, intending to address the fundamental meaning, as well
Quím. Nova. Publicado em: 2013
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6. Análise termodinâmica de processos de reforma do metano e da síntese Fischer-Tropsch / Thermodynamic analysis of methane reforming processes and Fischer-Tropsch synthesis
The reactions of reforming of light hydrocarbons, especially natural gas, are chemical reactions of great importance and represent key steps for large scale production of hydrogen for use in hydrogenation reactions or fuel cells, or synthesis gas production, for application in the ammonia or methanol production, or to Fischer-Tropsch (FT) synthesis. The Fisc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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7. Comprehensive two-dimensional gas chromatography with time of flight mass spectrometry applied to analysis of Fischer-Tropsch synthesis products obtained with and without carbon dioxide addition to feed gas
A cromatografia gasosa bidimensional abrangente acoplada à espectrometria de massas por tempo de vôo (CG×CG-EMTDV) foi aplicada para avaliar o efeito do CO2 sobre a distribuição dos n-alcanos, alcanos ramificados, alquenos e compostos oxigenados em produtos da reação de Fischer-Tropsch. Coeluições de material não resolvido observadas em CG convenci
Journal of the Brazilian Chemical Society. Publicado em: 2011-11
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8. Effect of K promoter on the structure and catalytic behavior of supported iron-based catalysts in fischer-tropsch synthesis
Effects of K addition on the performance of supported Fe catalysts for Fischer - Tropsch synthesis (FTS) were studied in a slurry reactor at 240 to 270ºC, 2.0 to 4.0 MPa and syngas H2/CO = 1.0. The catalysts were characterized by N2 adsorption, H2 temperature programmed reduction, X - ray diffraction, X - ray fluorescence, thermogravimetric analysis, scanni
Brazilian Journal of Chemical Engineering. Publicado em: 2011-09
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9. Implementação de um modelo computacional para estudo do processo Fischer-Tropsch em reator de leito de lama
O presente trabalho tem como objetivo a implementação e adaptação de um modelo computacional de equilíbrio de fases visando o estudo do processo Fischer- Tropsch em reator leito de lama a partir de gás de síntese (CO + H2) para a produção seletiva de hidrocarbonetos (CnHm), com ênfase na avaliação da influência das condições operacionais sobre
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2010
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10. Efeito da VariaÃÃo de LÃtio em Catalisadores de Ferro tendo PotÃssio e Cobre como Promotores para a SÃntese Fischer-Tropsch / EFFECT OF LITHIUM IN IRON BASED CATALYST FOR FISCHER-TROPSCH SYNTHESIS CONTAINING POTASSIUM AND COPPER AS PROMOTERS
New environmental regulations and a possible instability in the international oil market have led to a renewal interest in the Fischer-Tropsch Synthesis (FTS), which is an alternative to produce more environmental friendly fuels. The FTS is a polymerization reaction, in which syngas (H2 + CO) reacts in the presence of catalyst to produce hydrocarbons. Three
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2010
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11. Desenvolvimento de um novo catalisador monolítico à base de nanofibras de carbono para a produção de combustíveis limpos através da síntese de Fischer-Tropsch / Development of a new monolith catalyst based carbon nanofibers for produce clean fuel by Fischer-Tropsch synthesis
A síntese de Fischer-Tropsch (FT) é um processo de conversão do gás de síntese em combustíveis limpos. A natureza dos produtos desta reação depende, principalmente, do catalisador empregado (Fe, Co, Ni, Ru...), e de suas temperatura e pressão. Problemas de difusão dos reagentes e produtos no leito catalítico são comuns, podendo causar a desativa�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/07/2009
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12. Enhancing cobalt dispersion in supported Fischer-Tropsch catalysts via controlled decomposition of cobalt precursors
Fischer-Tropsch synthesis is a part of Gas-to Liquids (GTL), Biomass-to-Liquids (BTL) and Coal to Liquids (CTL) technologies, which produce alternatives clean fuels from natural gas, biomass and coal. The catalytic performance of cobalt catalysts in Fischer-Tropsch synthesis strongly depends on the size of cobalt particles in nanoscale range (6-30 nm). Cobal
Brazilian Journal of Physics. Publicado em: 2009-04