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Now showing items 21-30 of 478
Síntese direta do acetato de etila a partir do etanol sobre catalisadores de Au, Cu e AuCu suportados em zircônia monoclínica (m-ZrO2)
(Universidade Federal de São Carlos, 2018-03-09)
The ethanol conversion into ethyl acetate is a very important reaction, in economic and scientific fields. In the context of science, the propose of this work was to evaluate the activity of Au and Cu catalysts supported ...
Oxidação de CO sobre nanoestruturas controladas e de interiores vazios de AgPt dispersas em óxidos
(Universidade Federal de São Carlos, 2016-03-10)
The CO oxidation is considered one of the most studied reactions in heterogeneous catalysis. Although several studies have been developed in this field, the impact of some properties of catalysts, such as the oxygen mobility, ...
Propriedades da zeólita y contendo mesoporos formados por ação do surfactante CTA+
(Universidade Federal de São Carlos, 2018-02-22)
Zeolites are microporous, crystalline aluminosilicates that have numerous advantages due to their intrinsic properties such as acidity, hydrothermal stability and shape selectivity. However, the presence of micropores ...
Avaliação do comportamento fluidodinâmico lı́quido-sólido em biorreatores de leito fluidizado utilizando técnicas de fluidodinâmica computacional (CFD)
(Universidade Federal de São Carlos, 2018-09-20)
Anthropogenic actions have promoted technological challenges, for example, in the treatment of large quantities of wastewater, which can be done in fluidized bed bioreactors. For the study of these bioreactors, numerical ...
Avaliação de modelos matemáticos para a simulação do escoamento água – ar na flotação por ar dissolvido utilizando fluidodinâmica computacional
(Universidade Federal de São Carlos, 2018-02-21)
The concern with the future of water on the planet has increased in past years, mainly due to the recent water crisis suffered throughout the country. The dissolved air flotation (DAF) operation is an example of the ...
Catalisadores à base de Mo, CoMo e NiMo incorporados por impregnação ou in situ em γ-Al2O3, ZrO2 e γ-Al2O3-ZrO2 - avaliação na hidrodessulfurização do tiofeno
(Universidade Federal de São Carlos, 2011-03-28)
The preparation of Mo, CoMo or NiMo catalysts supported on -Al2O3, ZrO2 and - Al2O3-ZrO2 was studied. The zirconia contend added into alumina was 20 or 40 % wt.. The supports were synthesized via sol-gel ...
Influência dos íons metálicos na atividade e estabilidade de (hemi)celulases e no processo de sacarificação da biomassa
(Universidade Federal de São Carlos, 2015-02-26)
The enzymes involved in the conversion process of lignocellulosic biomass into second generation (2G) ethanol add a high cost to the process. Studies reported in the literature indicate that some metal ions, easily found ...
Purificação da Cefamicina C por processo de adsorção em coluna de leito fixo
(Universidade Federal de São Carlos, 2013-04-29)
Cephalosporins are β-lactam antibiotics which are widely used in the treatment of bacterial infections. Within this group, cephamycin C (CefC) stands out from the others cephalosporins antibiotics due to its greater ...
Imobilização da enzima β-galactosidase de Kluyveromyces fragilis em agarose e quitosana utilizando diferentes protocolos de ativação
(Universidade Federal de São Carlos, 2009-02-27)
The objective of this work was stabilize and immobilize β-galactosidase from activated agarose and chitosan supports. Initially, it was evaluated the buffer type, ionic strength and bivalent ions Mn2+ and Mg2+ on the ...
Pré-tratamento alcalino (NaOH) do bagaço de cana-de açúcar para a produção de etanol e obtenção de xilooligômeros
(Universidade Federal de São Carlos, 2011-03-28)
The aim of this study was to optimize the pretreatment of sugarcane bagasse raw and exploded with diluted sulfuric acid, water and sodium hydroxide in order to obtain Xylooligosaccharides in hemicellulose and production ...