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Mössbauer and XPS spectroscopies studies of SMSI effect on Fe/Nb2O5 catalysts for the Fischer-Tropsch synthesis
(Elsevier Science, 2007-06)
In order to study if the SMSI effect produces benefitial results on the Fischer-Tropsch (FT) reaction using the Fe/Nb2O5 system we prepared two catalysts by reduction at two different temperatures. The solids were characterized ...
Catalisadores Cu-Fe/Nb2O5 para aplicação em catálise ambiental
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de QuímicaQuímicaUTFPR, 2018-12-01)
In this work the main objective is the synthesis metalic of copper (Cu) and iron (Fe) and bimetal Copper-Iron (CuFe) catalysts supported in niobium (Nb2O5), provided by Brazlian Company of Metallurgy and Mining, for the ...
Nb-containing hematites Fe2-xNbxO3: The role of Nb5+ on the reactivity in presence of the H2O2 or ultraviolet light
(Elsevier Science BvAmsterdamHolanda, 2009)
Nb-containing hematites Fe2-xNbxO3: The role of Nb5+ on the reactivity in presence of the H2O2 or ultraviolet light
(Elsevier B.V., 2009-03-31)
A series of Nb-containing hematites, Fe-2-xNbxO3 (%Nb = 0.00, 1.49, 5.00 and 9.24) was prepared using the conventional co-precipitation method. Mossbauer and temperature-programmed reduction (TPR) measurements suggested ...
Nb-containing hematites Fe2-xNbxO3: The role of Nb5+ on the reactivity in presence of the H2O2 or ultraviolet light
(Elsevier B.V., 2009-03-31)
A series of Nb-containing hematites, Fe-2-xNbxO3 (%Nb = 0.00, 1.49, 5.00 and 9.24) was prepared using the conventional co-precipitation method. Mossbauer and temperature-programmed reduction (TPR) measurements suggested ...
Degradação de triclosan e 2,8-diclorodibenzeno-p-dioxina via sistema Fe/Nb2O5/UV
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilPrograma de Pós-Graduação em Engenharia QuímicaUTFPR, 2019-02-25)
This study describes the experimental design and optimization of the photocatalytic reaction using catalyst Fe/Nb2O5 immobilized on anginate beads in the degradation of Triclosan and 2.8-dichlorodibenzene-p-dioxin. The ...
Aplicação de óxidos mistos de a-Fe2O3/Nb2O5 obtidos pelo método Pechini em reações de fotodegradação
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA QUÍMICA, 2019-01-31)
New catalysts with high efficiency for the degradation of organic compounds at
effluents, mediated by sunlight and that are stable, has been a great challenge. In this work,
mixed oxides of -Fe2O3/Nb2O5 were prepared ...
Estudo de catalisadores Pd-a% - Nb2O5 / Al2O3 na reação de síntese de metil isobutil cetona (MIBK)Study of Pd - a% Nb2O5 / A12O3 catalysts in the methyl isobutyl ketone synthesis reaction (MIBK)
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia Química, 2020)