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Propriedades catalíticas de aluminossilicatos funcionalizados com propilaminas
(Universidade Federal de São Carlos, 2023-03-17)
In this work, the functionalization with aminopropyl-trimethoxysilane (APTMS) of aluminosilicates precursors of the Na-LTA zeolite was explored in the synthesis of basic catalysts for the Knoevenagel condensation. The ...
Produção de ácido hialurônico microbiano: viabilidade econômica e avaliação de impactos ambientais
(Universidade Federal de São Carlos, 2022-10-28)
Hyaluronic acid is a biopolymer with unique structural and rheological properties, that, initially, was produced by extraction from animal tissue, from rooster comb. However, it used non-ecofriendly solvents (chloroform) ...
Catalisadores NiFe/MgAl2O4 em reações de reforma a vapor: propriedades estruturais e catalíticas em função da composição Ni:Fe e temperatura de reação
(Universidade Federal de São Carlos, 2021-12-20)
This thesis evaluated the application of Ni-, Fe- and Ni-Fe/MgAl2O4 catalysts in Ethanol Steam Reforming (ESR), Ethanol Steam Reforming with hydrogen gas (ESRH), Methane Dry Reforming (RSM), Methane Steam Reforming (RVM) ...
Photocatalytic degradation of organic pollutants through peroxymonosulfate activation: photocatalysts and reaction mechanisms
(Universidade Federal de São Carlos, 2023-06-30)
Water pollution from organic compounds has become a growing concern worldwide due to the risks imposed on human health and the environment. The rapid advancements in the pharmaceutical and agricultural industries have ...
Transesterificação heterogênea catalisada por sílicas contendo sítios básicos e cátions cetilvinilimidazólio
(Universidade Federal de São Carlos, 2022-05-12)
Homogeneous catalysis is the most used process in the production of biodiesel, although this process has several disadvantages such as: the catalyst cannot be easily reused and requires parallel processes for separation ...
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 ...
Produção de coquetel enzimático rico em endoglucanase termoestável em biorreator de leito empacotado e sua aplicação na obtenção de nanocelulose
(Universidade Federal de São Carlos, 2021-10-21)
Nanocellulose is a bioproduct with high added value obtained through the conversion of lignocellulosic biomass. Due to characteristics such as high aspect ratio, low toxicity, thermal stability and high crystallinity, ...
Avaliação das condições hidrodinâmicas, de transferência de oxigênio e de cisalhamento em diferentes modelos e escalas de reatores pneumáticos
(Universidade Federal de São Carlos, 2016-04-26)
Due to the high capacity of oxygen transfer and versatility, pneumatic reactors have been
constantly used in bioprocesses. However, aiming to expand the use of these bioreactors in the industry, as well as increase the ...
Avaliação de parâmetros globais de desempenho de biorreatores pneumáticos através de fluidodinâmica computacional
(Universidade Federal de São Carlos, 2015-03-25)
Pneumatic bioreactors are devices free of moving parts which have the purpose
of converting raw materials in bio-products of commercial interest by the action of enzymes
or cells. They are promising in the biochemical ...
Análise do efeito das condições operacionais e características geométricas do leito de jorro na secagem de pastas
(Universidade Federal de São Carlos, 2015-07-06)
In this present work, the fluidynamic and drying process of paste in a spouted
bed was analyzed. The experiments were conducted using polyethylene particles of 4.38 mm
of diameter and 930.5 ± 0.3 kg/m3 of specific mass ...