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Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
(Elsevier Science Sa, 2014-02-14)
Partial hydrogenation of sunflower oil was studied over Pd/Al2O3/Al catalysts in a monolithic stirred reactor. The catalyst showed similar or even better activity and selectivity than conventional Pd/Al2O3 catalysts. ...
Adsorption and catalytic oxidation of asphaltenes in fumed silica nanoparticles: Effect of the surface acidity
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2016-07-01)
This study aims to evaluate the effect of surface acidity of fumed silica nanoparticles in adsorption and subsequent thermal cracking of Colombian asphaltenes. The acidities of the surfaces were established through Temperature ...
Nanostructured catalysts applied to degrade atrazine in aqueous phase by heterogeneous photo-Fenton process
(Springer Heidelberg, 2019-02-02)
SBA-15 and KIT-6 materials have been synthesized and modified with iron salts by the wet impregnation method with different metal loadings. The different mesostructures obtained were characterized by N 2 adsorption–desorption ...
Effect of cesium incorporation in hydrotalcite-like compounds
(Springer, 2019-04-26)
Hydrotalcite-like compounds are synthetic anionic clays that have outstanding adsorption and catalytic properties. Hydrotalcite nanoclays (Mg–Al layered hydroxides) were synthesized by co-precipitation method. Obtained ...
Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
(Pergamon-Elsevier Science Ltd, 2011-01)
Surface defects were created on carbon nanotubes (CNTs) by catalytic steam gasification or catalytic etching with iron as catalysts. The structure and morphology of the etched CNTs were studied by transmission electron ...
Assessment of surface acidity in mesoporous materials containing aluminum and titanium
(Elsevier Science, 2009-04-01)
The surface acidity of mesoporous molecular sieves of aluminum and titanium was evaluated using four different techniques: n-butylamine volumetry, cyclohexylamine thermodesorption, temperature-programmed desorption of ...
Obtención de carbonato de glicerol con zeolita beta básica
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2015)
En el presente trabajo se reporta la evaluación catalítica de la zeolita beta con relación molar SiO₂/Al₂O₃ = 90 modificada con bario, así como los resultados de caracterización, por difracción de rayos-X, espectroscopias ...
Effect of CO2 in the oxidative dehydrogenation reaction of propane over Cr/ZrO2 catalysts
(Elsevier B.V., 2018-05-25)
Investigation was made on the effect of chromium content, and method of hydrothermal preparation of Cr/ZrO2 catalysts on their catalytic properties for CO2 oxidative dehydrogenation of propane (ODP). The catalysts were ...
Catalisadores baseados em óxido de nióbio e suas aplicações em reações da cadeia de combustíveis
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAPrograma de Pós-Graduação em QuímicaUFMG, 2019-07-24)
Actual society is extremely dependent on fossil fuels that are widely used to drive engines, heat materials and produce energy. Although these fuels have several aspects that go against sustainability (such as the fact ...
Efeito promotor do rênio ao catalisador Pt/C na reforma líquida do glicerol
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em QuímicaCiências Exatas e da TerraUFU, 2016)