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Now showing items 61-70 of 102
Melhoria do cetano em óleo diesel : abertura do ciclo da decalina sobre catalisadores de Pt, Ir ou Rh suportados em zeólitas FAU e BEA
(Universidade Federal de São Carlos, 2011-06-08)
Environmental laws and stricter quality specifications have driven the development of technologies for improving the cetane number in diesel fuel. In addition to the saturation of (poly)aromatic compounds, responsible for ...
Otimização da produção de etanol 2G a partir de hexoses e pentoses
(Universidade Federal de São Carlos, 2014-02-27)
The industrial production of fuel ethanol and sugar generates the main byproduct of sugarcane bagasse, which is burned in boilers for power generation. However, as a lignocellulosic material (consisting basically of three ...
Formação de mesoporosidade em zeólitas ZSM-5: avaliação do método de preparação e do potencial como catalisador ácido através do craqueamento de cicloexano
(Universidade Federal de São Carlos, 2012-04-27)
Due to their potential as acid catalyst and hydrothermal stability, USY, ZSM-5 and modernite zeolites are widely used in several processes of petroleum refining and petrochemical industries. With the discovery of new ...
Síntese de titanatos alcalinos e avaliação na transesterificação catalítica
(Universidade Federal de São Carlos, 2012-06-11)
Three methods for the synthesis of sodium titanates were investigated: solid state treatment (800 oC), hydrothermal treatment (110 oC) and sol-gel method (55 oC). The titanium oxide was used as starting compound for ...
Secagem de sólidos porosos granulares
(Universidade Federal de São Carlos, 2014-07-18)
In the present work, an experimental study about heat and mass transfer phenomena was carried out during drying of porous media when subjected to an upward flow of heated air. The cylindrical porous media consisted of ...
Inovações na síntese enzimática de amoxicilina
(Universidade Federal de São Carlos, 2012-04-27)
Penicillin G acylase (PGA, E.C.3.5.1.11) from Escherichia coli is an enzyme of great industrial importance, widely used for the hydrolysis of penicillin G, producing the 6-aminopenicillanic acid (6-APA), which is a key ...
Extração de cefamicina C por sistema de duas fases aquosas e purificação por troca iônica
(Universidade Federal de São Carlos, 2013-04-26)
Cephamycin C is a β-lactam antibiotic that belongs to the cephalosporins. This antibiotic stands out from other cephalosporins because it has activity against gram-negative bacteria and for being resistent to ...
Produção de mutantes de Streptomyces clavuligerus nos genes lat, cvm7P e rpoZ e estudo de seus efeitos sobre a produção de ácido clavulânico
(Universidade Federal de São Carlos, 2010-08-11)
Molecular biology and genetic engineering have been deployed widely in recent years, several protocols have been established, presenting new methodologies capable of altering the genetics of bacterial strains industrial ...
Propriedades eletrônicas e estruturais do Cu/ZrO2 aplicadas à reação do etanol
(Universidade Federal de São Carlos, 2012-06-22)
Copper is a typical catalyst for dehydrogenation of ethanol to acetaldehyde. However, copper supported on ZrO2 was found to be extremely active and selective to convert ethanol directly to ethyl acetate. Several reports ...
Produção de hidrogênio e etanol em reator anaeróbio de leito fluidizado: avaliação do desempenho de três materiais suporte em diferentes condições operacionais
(Universidade Federal de São Carlos, 2012-03-09)
Hydrogen and ethanol production using microorganisms is a promising area of technological development from a wide variety of renewable and alternative to this production is the use of anaerobic fluidized bed reactor (AFBR). ...