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Estudos sobre a acessibilidade aos sítios de zeólitas para aplicação em catálise básica
(Universidade Federal de São Carlos, 2022-03-28)
The application of zeolites in catalysis is restricted when bulkier molecules are involved, for example, in the manufacture of fine chemicals, where the reactant molecules are unable to access their micropores. A solution ...
Análise de diferentes configurações do leito de jorro com agitador mecânico e do equipamento convencional
(Universidade Federal de São Carlos, 2022-03-24)
The mechanical spouted bed emerged as a modification of the conventional spouted bed
to minimize problems in the movement of solids and the need for high air flows just for
the existence of the spouting regimen. Therefore, ...
Implementação de sistema nebuloso (“fuzzy”) para controle de oxigênio dissolvido no cultivo de Escherichia coli para expressão de proteínas recombinantes
(Universidade Federal de São Carlos, 2022-04-27)
Due to low oxygen solubility in water and mechanical limitations of a bioreactor, ensuring an adequate dissolved oxygen supply during a recombinant Escherichia coli cultivation is a major challenge in process control. In ...
Influência da costura na performance de meios filtrantes aplicados em filtro de mangas
(Universidade Federal de São Carlos, 2022-08-30)
There is a variety of filter bags available in the market for cleaning gases, composed of different materials, of various sizes, with several surface treatments, high efficiency, and different finishes, which enables the ...
Estudos sobre a produção de nanofibras de PVA via electrospinning e sua aplicação em filtração de nanoaerossóis
(Universidade Federal de São Carlos, 2022-09-30)
Poly(vinyl alcohol) nanofibers for air filtration were produced by electrospinning using citric acid and different concentrations of Triton X-100 surfactant. Filtration tests with nanoparticles (5.94–224.7 nm) and tests ...
Electrochemical desalination using polyglycerol activated carbon: electrode, cell, and process development
(Universidade Federal de São Carlos, 2022-11-18)
Capacitive deionization (CDI) has emerged as a promising electrochemical technology for the desalination of brackish water, which promotes the electrosorption of ions in the electrical double layer. In recent years, there ...
Catalisadores de Au/ZrO2 e Au/In2O3/ZrO2: Efeito das propriedades eletrônicas e estruturais na atividade para desidrogenação do etanol e hidrogenação de CO2
(Universidade Federal de São Carlos, 2022-10-28)
Au/ZrO2 and Au/In2O3/ZrO2 catalysts were developed for CO2 hydrogenation reaction and Au/ZrO2 for ethanol dehydrogenation. The monometallic gold catalysts supported on ZrO2 with different contents (0.3 to 5.0%w/w) were ...
Utilização do CO2 em substituição ao O2 na ativação de Cu-MAZ na oxidação do metano a metanol
(Universidade Federal de São Carlos, 2022-10-27)
Converting methane to methanol has been a challenge for decades due to the high reactivity of methanol compared to methane. One of the challenges of this reaction to take it to an industrial scale was to find a safer oxidant ...
Formação do carbonato de glicerol por transesterificação catalítica heterogênea
(Universidade Federal de São Carlos, 2022-04-29)
The industrial production of biodiesel has generated large amounts of glycerol, transforming this co-product into raw material for other processes. Notably, glycerol carbonate has emerged as a promising substance for the ...