Buscar
Mostrando ítems 1-10 de 10
Preparation and characterization of cellulose/hydrous niobium oxide hybrid
(Elsevier B.V., 2012-07-01)
A composite of cellulose extracted from bagasse with Nb2O5 center dot nH(2)O in three different proportions (16.67, 37.5 and 50.0 wt%) was prepared using the co-precipitation method. The materials were characterized by ...
Preparation and characterization of cellulose/hydrous niobium oxide hybrid
(Elsevier B.V., 2012-07-01)
A composite of cellulose extracted from bagasse with Nb2O5 center dot nH(2)O in three different proportions (16.67, 37.5 and 50.0 wt%) was prepared using the co-precipitation method. The materials were characterized by ...
Preparation and characterization of cellulose/hydrous niobium oxide hybrid
(Elsevier B.V., 2014)
Adsorption kinetic, thermodynamic and desorption studies of phosphate onto hydrous niobium oxide prepared by reverse microemulsion method
(SPRINGER, 2010)
A type of Nb(2)O(5)center dot 3H(2)O was synthesized and its phosphate removal potential was investigated in this study. The kinetic study, adsorption isotherm, pH effect, thermodynamic study and desorption were examined ...
An investigation of phosphate adsorption from aqueous solution onto hydrous niobium oxide prepared by co-precipitation method
(ELSEVIER SCIENCE BV, 2009)
The synthetic hydrous niobium oxide has been used for phosphate removal from the aqueous solutions. The kinetic data correspond very well to the pseudo second-order equation The phosphate removal tended. to increase with ...
Thermodynamic and kinetic investigations of phosphate adsorption onto hydrous niobium oxide prepared by homogeneous solution method
(ELSEVIER SCIENCE BV, 2010)
The adsorption kinetics of phosphate onto Nb(2)O(5)center dot nH(2)O was investigated at initial phosphate concentrations 10 and 50 mg L(-1). The kinetic process was described by a pseudo second-order rate model very well. ...
Intralamellar structural modifications related to the proton exchanging in K(4)Nb(6)O(17) layered phase
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
Basic structural aspects about the layered hexaniobate of K(4)Nb(6)O(17) composition and its proton-exchanged form were investigated mainly by spectroscopic techniques. Raman spectra of hydrous K(4)Nb(6)O(17) and ...
Synthesis of Nb(2)O(5)center dot nH(2)O nanoparticles by water-in-oil microemulsion
(ELSEVIER SCIENCE BV, 2010)
Hydrous niobium oxide (Nb(2)O(5)center dot nH(2)O) nanoparticles had been Successfully prepared by water-in-oil microemulsion. They were characterized by X-ray diffraction (XRD), thermal analysis (TG/DTG), Fourier transform ...
Intralamellar structural modifications related to the proton exchanging in K4Nb6O17 layered phase
(Elsevier B.V., 2010-04-01)
Basic structural aspects about the layered hexaniobate of K4Nb6O17 composition and its proton-exchanged form were investigated mainly by spectroscopic techniques. Raman spectra of hydrous K4Nb6O17 and H2K2Nb6O17 center dot ...
Caracterización geoquímica de la Formación La Cruz, Complejo Volcánico Las Animas, Nariño-Cauca, Colombia
(Universidad de los AndesGeocienciasFacultad de CienciasDepartamento de Geociencias, 2022-12)
Las Ánimas es un complejo volcánico ubicado en los Andes del Norte de Colombia, sobre la Cordillera Central. En este estudio se presenta el análisis de roca total de elementos mayores y traza para 19 muestras de pómez ...