Buscar
Mostrando ítems 11-20 de 192
Enhanced formic acid oxidation on polycrystalline platinum modified by spontaneous deposition of gold. Fourier transform infrared spectroscopy studies
(Elsevier Science, 2015-08)
Formic acid and adsorbed carbon monoxide electrooxidation on polycrystalline Pt and Au-modified Pt surfaces were studied by cyclic voltammetry, lineal sweep voltammetry and in-situ Fourier transform infrared spectroscopy ...
Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
(Royal Society Of Chemistry, 2015-02-12)
We present, for the first time in literature, a systematic study of the molecular structure of the Wells-Dawson heteropolyacid H6P2W18O62.24H2O (HPA) dispersed on TiO2, SiO2, ZrO2 and Al2O3. The heteropolyacid-based ...
Estudios mecanísticos y cinéticos empleando micro-reactores espectroscópicos
(2016-03-17)
Interpretar adecuadamente las interacciones moleculares, los mecanismos de reacción y la cinética intrínseca es de fundamental importancia para realizar un diseño racional de nuevos catalizadores. En esta tesis doctoral ...
In-Situ DRIFT Study of Au-Ir/Ceria Catalysts: Activity and Stability for CO Oxidation
(Springer/plenum Publishers, 2016-02)
Monometallic gold and iridium, and bimetallic gold-iridium on ceria catalysts were synthesized by deposition-precipitation with urea. The activity of these ceria supported catalysts for CO oxidation was: Au-Ir >> Au > Ir. ...
Spectroelectrochemistry of palladium hexacyanoferrate films on platinum substrates
(Elsevier Science SA, 2003-03-13)
Among the Prussian blue analogs, palladium hexacyanoferrate (PdHCF) is of interest from electrochromic and catalytic perspectives, but has not been extensively studied to date. In this paper we report on the combined use ...
Thermal decomposition and structural reconstruction effect on Mg-Fe-based hydrotalcite compounds
(Academic Press Inc Elsevier ScienceSan DiegoEUA, 2004)
Proposal of a method to evaluate the in-situ oxidation of polyphenolic during the cocoa drying
(Reino Unido, 2022-03-05)
In this work, the oxidation of polyphenols during drying of cocoa beans by using microwaves (MWs), applied in an ON-OFF mode, was studied. Phenolic compounds were quantified in cocoa beans before and after drying. Total ...
PROCESSAMENTO E CARACTERIZAÇÃO DE MISTURAS DE PEBD VIRGEM E RECICLADO COM BORRACHA DE PNEU DESVULCANIZADA POR MICROONDAS “IN SITU”.
(UNIVERSIDADE ESTADUAL DE PONTA GROSSABRDesenvolvimento e Caracterização de MateriaisPrograma de Pós-Graduação em Engenharia e Ciências de MateriaisUEPG, 2017)