Buscar
Mostrando ítems 1-10 de 291
Produção de eteno a partir de etanol utilizando aluminas
(Universidade Federal de Santa MariaBREngenharia de ProcessosUFSMPrograma de Pós-Graduação em Engenharia de Processos, 2012-09-24)
Calcination variables, temperature, time and heating rate, used in obtaining different
transition aluminas were simultaneously investigated using statistical experimental design.
Empirical models correlating catalyst ...
High Purity Mullite by Slip Casting Method from Calcined Alumina and Kaolinitic Clay
(Elsevier, 2015-05)
The mullite – 3Al2O3.2SiO2-, has different applications, specially in refractory materials, as it is the silicoaluminous refractory material for excellence. The most frequent methods used to prepare mullite are based on ...
Combined effects of SiO2 ratio and purity on physical properties and microstructure of in situ alumina-mullite ceramic
(2021-01-01)
The in situ formation of mullite (Al6Si4O13) is a complex process based on solid-state reactions strongly affected by the characteristics of Al2O3 and SiO2 sources. This study investigated the combined effects of variable ...
Design of hierarchical porous aluminas by using one-pot synthesis and different calcination temperatures
(Springer, 2012-08-01)
Hierarchical aluminas with pore sizes ranging from a few nanometers to micrometers were obtained using an one-pot sol-gel synthesis. The aluminas were synthesized under acid conditions from aluminum isopropoxide in presence ...
Design of hierarchical porous aluminas by using one-pot synthesis and different calcination temperatures
(Springer, 2012-08-01)
Hierarchical aluminas with pore sizes ranging from a few nanometers to micrometers were obtained using an one-pot sol-gel synthesis. The aluminas were synthesized under acid conditions from aluminum isopropoxide in presence ...
SÍNTESE DE PÓS DE α-ALUMINA COM ADIÇÃO DE SEEDS ATRAVÉS DO MÉTODO PECHINI
(UNIVERSIDADE ESTADUAL DE PONTA GROSSABRDesenvolvimento e Caracterização de MateriaisPrograma de Pós-Graduação em Engenharia e Ciências de MateriaisUEPG, 2017)
On the paradox of transition metal-free alumina-catalyzed epoxidation with aqueous hydrogen peroxide
(Academic Press Inc Elsevier ScienceSan DiegoEUA, 2005)
Tuning the acidic properties of aluminas via sol-gel synthesis: New findings on the active site of alumina-catalyzed epoxidation with hydrogen peroxide
(Elsevier B.V., 2006-11-15)
This study answers several pending questions about alumina-catalyzed epoxidation with aqueous 70 wt% H2O2. To evaluate the effect of the water-to-aluminum tri-sec-butoxide molar ratio, this was systematically changed from ...