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Catalisadores à base de CuO, Fe2O3 ou CuO-Fe2O3 suportados sobre y-Al2O3, ZrO2 ou ZrO2/y-Al2O3 para a redução de NO com CO
(Universidade Federal de São Carlos, 2014-03-31)
NO, NO2 and N2O nitrogen oxides, named NOx, strongly contribute to the air pollution and to minimize their emissions are used catalytic processes. The catalytic reduction of NO with CO has the advantage to simultaneously ...
Reforma a vapor do ácido acético sobre catalisadores de Ni/Al2O3: estudo das rotas reacionais
(Universidade Federal de São Carlos, 2014-02-21)
Acetic acid (AA), one majority substance contained in the bio-oil from biomass pyrolysis, was used as a model molecule for study of reaction routes of steam reforming on Ni/θ-Al2O3 catalysts. The catalyst containing ...
Avaliação de diferentes configurações de hidrólise enzimática e fermentação utilizando bagaço de cana-de-açúcar para a produção de etanol 2G
(Universidade Federal de São Carlos, 2015-03-27)
Sugarcane bagasse (SCB) is a by-product generated after sugarcane milling in the process of manufacture of sugar and/or ethanol. In this study, pretreated SCB was used in different configurations of enzymatic hydrolysis ...
Determinação da força de adesão entre partícula e superfícies rugosas através da técnica centrífuga
(Universidade Federal de São Carlos, 2014-03-28)
Adhesion between powders and surfaces plays an important role in various technological areas and processes, such as paste drying operations, fluidization of fine particles, microencapsulation, xerography and in food and ...
Síntese e caracterização de catalisadores de óxido de cálcio suportado em ferritas magnéticas avaliados na reação de transesterificação etílica
(Universidade Federal de São Carlos, 2015-03-16)
The petroleum crisis associated with global warming and environmental pollution has motivated researchers to investigate more profoundly the feasibility of alternative energy sources. Biofuels have been recently regaining ...
Catalisadores de Cu/CeO2 modificados com La aplicados à reação de deslocamento gás-água
(Universidade Federal de São Carlos, 2013-03-14)
The water gas shift reaction (WGSR) is often used in industrial processes in order to increase hydrogen production, as well as to remove quantities of CO in the chains produced by steam reforming of hydrocarbons. In this ...
Avaliação do catalisador CTA-MCM-41, modificado por poliacrilatos, na transesterificação de monoéster
(Universidade Federal de São Carlos, 2014-03-24)
The silica hybrid CTA-MCM-41 (where CTA is the cetyltrimethylammonium cation) was synthesized and used in the transesterification of ethyl acetate with methanol. This is a model reaction used to test basic catalysts for ...
Produção de etanol a partir da fração hemicelulósica do bagaço de cana usando glicose isomerase coimobilizada com Saccharomyces cerevisiae
(Universidade Federal de São Carlos, 2014-04-23)
Glucose isomerase (GI) was covalently immobilized and co-immobilized with baker yeast in calcium alginate beads for ethanol production by simultaneous isomerization and fermentation of xylose or hemicellulose hydrolysate ...
Contribuição ao estudo e modelagem matemática de reator anaeróbio de leito granular expandido (EGSB) tratando água residuária de suinocultura
(Universidade Federal de São Carlos, 2014-10-03)
Anaerobic systems have been widely studied and used in treatment of wastewater from agriculture and others. Among the existing technologies, there are the EGSB (Expanded Granular Sludge Bed) reactors, which have emerged ...
Produção de hidrogênio por reforma a vapor e oxidativa do etanol utilizando óxidos do tipo perovskita
(Universidade Federal de São Carlos, 2013-10-17)
This paper assesses the catalytic activities of LaCoO3 perovskite towards the steam reforming oxidative reaction of ethanol . Due to the low surface area which is commonly found on perovskite-type oxides , these were ...