Buscar
Mostrando ítems 1-10 de 91
Correlation between local structure and ionic conductivity of potassium-doped siloxane poly(propyleneoxyde) ormolytes
(2005-12-01)
The local order around K for K(CF3SO3) doped Siloxane-Poly(propyleneoxide) hybrids at different doping concentration was investigated by x-ray absorption spectroscopy (EXAFS and XANES) at the potassium K-edge. The results ...
Correlation between local structure and ionic conductivity of potassium-doped siloxane poly(propyleneoxyde) ormolytes
(2005-12-01)
The local order around K for K(CF3SO3) doped Siloxane-Poly(propyleneoxide) hybrids at different doping concentration was investigated by x-ray absorption spectroscopy (EXAFS and XANES) at the potassium K-edge. The results ...
Cobalt aluminum silicate complexes prepared by the non-hydrolytic sol–gel route and their catalytic activity in hydrocarbon oxidation
(Applied Catalysis A: General, 2006)
This work describes the optimized conditions for the preparation of cobalt aluminum silicate complexes through a simplified methodology. These materials, designated CoAlSi-NHG, were obtained by a non-hydrolytic sol–gel ...
Encapsulation of tetraazaannulenato compounds in matrix by sol-gel process
(Kluwer Academic PublDordrechtHolanda, 2003)
New architecture of supported metallocene catalysts for alkene polymerization
(John Wiley & Sons Inc, 2007-12)
We report the synthesis of a supported metallocene catalyst that exhibits the same activity as a homogeneous catalyst for ethylene polymerization reactions. The key to this new catalytic system is a hybrid organic-inorganic ...
Pretreatment of an induced mycelium-bound lipase from Arpergillus niger MYA 135 improves its hydrolytic and synthetic activity
(Springer, 2013-02-02)
Whole-cell enzymes have been used as biocatalysts in a variety of reactions, such as free fatty acid production and the synthesis of fatty acid esters. In the present study, enzyme pretreatments with PEG, MES, Tween 80, ...
Iron-alumina materials prepared by the non-hydrolytic sol–gel route: Synthesis, characterization and application in hydrocarbons oxidation using hydrogen peroxide as oxidant
(2010)
Novel alumina materials containing FeIII ions were prepared by the non-hydrolytic sol–gel route and applied as heterogeneous catalysts in the oxidation of hydrocarbons (cyclooctene and cyclohexane) by the green oxidant ...
Porphyrins entrapped in an alumina matrix
(Royal Soc ChemistryCambridgeInglaterra, 2001)