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Estudo da dinâmica do escoamento gás-sólido em resfriadores de catalisador de FCC usando fluidodinâmica computacional (CFD)
(Universidade Federal de São Carlos, 2017-01-26)
The fluid catalytic cracking (FCC) is an important process in oil industry, since it converts heavier fractions in lighter ones, which are more valuable. The catalyst particles (typically m) are deactivated during the ...
Influência da adição de Co nas propriedades de catalisadores à base de Ni suportados em MgAl2O4 aplicados na reforma a vapor do ácido acético
(Universidade Federal de São Carlos, 2016-03-28)
The steam reforming of acetic acid (SRAcH), a model compound of pyrolysis-oil, was studied over MgAl2O4-supported Co-Ni catalysts with different Co/Ni ratios, prepared by impregnation using the incipient wetness method. ...
Hidrotalcitas multimetálicas para produção de gás de síntese a partir do biogás
(Universidade Federal de São Carlos, 2015-03-18)
In this work, catalysts derived from hydrotalcites were employed in Direct Reforming of Biogas, once they feature the necessary basicity to allow and improve carbon removal during reforming. As a differential study, the ...
Catalisadores Ni-Fe/MgAl2O4 na reforma a vapor do etanol: influência da razão molar Ni/Fe nas propriedades catalíticas
(Universidade Federal de São Carlos, 2017-03-02)
The effect of iron incorporation on the catalytic properties of Ni / MgAl2O4 for the Ethanol Steam Reforming (ESR) was studied. Samples of different Fe/Ni molar ratios were prepared by wet impregnation of MgAl2O4, synthesized ...
Biorreator wave como alternativa para expansão de células estromais mesenquimais
(Universidade Federal de São Carlos, 2015-03-05)
Mesenchymal stromal cells (MSCs) are required by the scientific community in the development and enhancement of therapeutic techniques in different fields of medicine. The MSCs are present in small concentrations in tissues, ...
Captura de CO2 de gases de combustão utilizando óxido de cálcio
(Universidade Federal de São Carlos, 2018-02-23)
Calcium oxide (CaO) based materials were prepared, characterized and subjected to cyclic carbonation and decomposition reactions in order to evaluate the carbon dioxide capture capacity (CO2) and the stability of the ...
Avaliação experimental de um ciclone adaptado com bocais pulverizadores de água
(Universidade Federal de São Carlos, 2018-02-19)
Brazil is a world leader in the production of sugar and ethanol by using sugar cane. Nonetheless, in order to supply the energy demands of this sector, the sugarcane bagasse is used as a fuel in boilers and its burning ...
Avaliação de meios filtrantes para filtro de mangas com sistema de limpeza de jato de ar pulsante do processo de despoeiramento secundário da aciaria de uma indústria siderúrgica
(Universidade Federal de São Carlos, 2018-03-01)
Nowadays, in addition to complying with the emission limits determined by the authorities, some companies seek to minimize their operating costs. In order to achieve this, they must choose a proper material for the filter ...
Modelagem fenomenológica da síntese enzimática de biodiesel etanólico utilizando lipase solúvel
(Universidade Federal de São Carlos, 2018-03-27)
The kinetics study of the synthesis of ethyl biodiesel allows a deeper understanding of the enzymatic process, providing an important tool for process design, optimization and control. Most of the models proposed in the ...
Partículas rugosas de sílica híbrida aplicadas na transesterificação catalítica
(Universidade Federal de São Carlos, 2019-03-15)
Heterogeneous catalysts are potentially responsible for reducing the cost of producing biodiesel, due to its reusability or use in continuous process. As-synthesized hybrid silicas, containing siloxy sites, can be used as ...