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Catalisadores de CuO, Fe2O3 ou Co3O4 suportados em TiO2, CeO2 ou ZrO2: preparação via Sol-gel in situ ou impregnação e avaliação na redução de NO com CO
(Universidade Federal de São Carlos, 2012-04-13)
The minimization of the emissions of nitrogen oxides (NOx) is a subject of crucial interest, since them cause serious environmental problems which affect human health, vegetation and fauna. With the purpose to abate NOx, ...
Sobre a estabilidade de catalisadores de cobalto suportados durante a reforma do etanol
(Universidade Federal de São Carlos, 2012-06-11)
Cobalt-based catalysts supported on γ-alumina and magnesium aluminate modified with lanthanum and cerium have been applied to various conditions of reforming of ethanol. The initial challenge was to control the rate ...
Redução de NO com CO sobre catalisadores de CuO, Fe2O3 e CuO-Fe2O3 suportados em TiO2, ZrO2 e TiO2-ZrO2 - efeito do vapor de água na atividade e seletividade a N2
(Universidade Federal de São Carlos, 2013-04-26)
The combustion of petroleum fuels produces large emissions of NOX, SOX and other strong atmospheric pollutants. The abatement of NOX can be achieved by the nonselective catalytic reduction of NO with CO, for that, supported ...
Análise do desempenho do leito vibrofluidizado na secagem de pasta
(Universidade Federal de São Carlos, 2017-05-05)
The agitation promoted by the vibrofluidized bed allows the incorporation of several unitary operations such as granulation, coating of particle, drying of grains, and the drying of pasty materials. However, it is necessary ...
Engenharia de biocatalisadores aplicada à síntese de CLEAs para a aplicação na conversão multienzimática de sacarose à ácido glucônico e xarope de frutose
(Universidade Federal de São Carlos, 2017-02-17)
Sugarcane sugar (sucrose) is a raw material produced in abundance in Brazil; it is very attractive to produce high added-value products. Gluconic acid (GA) can be obtained by multienzymatic conversion of sucrose, using ...
Reações cíclicas de oxidação e redução de materiais a base de Ni para geração de hidrogênio
(Universidade Federal de São Carlos, 2017-04-06)
Hydrogen (H2) is used in several industrial processes, including ammonia production and petroleum refining. Commercially, most of the H2 produced is from methane steam reforming. Although well established industrially, ...
Produção de etanol empregando leveduras convencionais e termotolerantes
(Universidade Federal de São Carlos, 2017-02-23)
To attend the increase in Brazilian ethanol consumption and exportation, and also to comply with the goals established in the COP 21 and Quioto protocol, it will be necessary to increase the ethanol production in the next ...
Secagem de materiais pastosos e granulares no leito de jorro mecânico e convencional
(Universidade Federal de São Carlos, 2017-06-02)
This study had the objective to assess the behavior of a mechanically spouted bed compared to a conventional spouted bed through attrition of particulate matter, thermal and mass analysis during water evaporation and through ...
Controle nebuloso ("fuzzy”) aplicado à combustão em caldeiras a bagaço de cana
(Universidade Federal de São Carlos, 2018-04-26)
In the sugarcane industry, boilers are widely used for cogeneration. This term designates the simultaneous generation of more than one type of energy, namely thermal and electrical, from the same fuel source. This industry ...
Estratégias para obtenção de compósitos fertilizantes via solubilização biológica de minerais
(Universidade Federal de São Carlos, 2018-03-27)
Phosphate fertilizers are widely used to improve agricultural productivity. However, the process of producing these fertilizers involves high costs and can cause environmental damage. The application of phosphate solubilising ...