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Mostrando ítems 71-80 de 103
Artículo
In situ DRIFTS-MS methanol adsorption study onto supported NiSn nanoparticles: Mechanistic implications in methanol steam reforming
(Multidisciplinary Digital Publishing Institute (MDPI), 2021)
Methanol adsorption over both supported NiSn Nps and analogous NiSn catalyst prepared by impregnation was studied by in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) to gain insights into the ...
Artículo
CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
(Elsevier, 2018)
The present paper addresses the nature of the active sites of a bimetallic Ni-Ru supported catalyst on the dry reforming of methane (DRM). The structural characterization by XRD and Raman spectroscopy, along with ...
Artículo
H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
(Elsevier, 2015-06-01)
A new approach for understanding PrOx reaction over gold catalysts is proposed in this work. The competition between H2 and CO oxidation has been studied over a series of Au/MOx/Al2O3 (M = Ce and Co) catalysts in simulated ...
Artículo
Sustainable routes for acetic acid production: Traditional processes vs a low-carbon, biogas-based strategy
(Elsevier, 2022)
The conversion of biogas, mainly formed of CO2 and CH4, into high-value platform chemicals is increasing attention in a context of low-carbon societies. In this new paradigm, acetic acid (AA) is deemed as an interesting ...
Tesis Doctoral
Estudio de la reacción de Sabatier para la valorización de CO2 a partir de corrientes de flue gas
(2021-02-01)
Las emisiones de dióxido de carbono (CO2) son producidas principalmente por los sectores industriales, destacando la industria del acero, la cual contribuye con un 30% de las emisiones globales y por tanto, siendo uno ...
Artículo
Unravelling the Role of Oxygen Vacancies in the Mechanism of the Reverse Water–Gas Shift Reaction by Operando DRIFTS and Ultraviolet–Visible Spectroscopy
(American Chemical Society, 2018)
The reaction mechanism of the reverse water−gas shift (RWGS) reaction was investigated using two commercial gold-based catalysts supported on Al2O3 and TiO2. The surface species formed during the reaction and reaction ...
Artículo
Recent advances on gas-phase CO2 conversion: Catalysis design and chemical processes to close the carbon cycle
(Elsevier, 2022)
Chemical CO2 recycling in the gas phase constitutes a straightforward approach for effective CO2 conversion to added-value products like syngas or synthetic methane. In this scenario, some traditional processes such as the ...
Artículo
Understanding the Role of the Acid Sites in 5-Hydroxymethylfurfural Oxidation to 2,5-Furandicarboxylic Acid Reaction over Gold Catalysts: Surface Investigation on CexZr1- xO2 Compounds
(American Chemical Society, 2018-12-07)
A series of CexZr1-xO2 supports with different Ce/Zr molar ratios were utilized for the preparation of gold catalyst used in the selective oxidation of 5-hydroxymethyl-2-furfural to 2,5-furandicarboxylic acid. The used ...
Artículo
Low-temperature CO oxidation on multicomponent gold based catalysts
(Frontiers Media S.A, 2013)
In this work the development of gold catalysts, essentially based on γ-alumina with small superficial fraction of Ce-Fe mixed oxides as support for the low temperature CO oxidation is proposed. Characterization results ...
Artículo
Monolithic stirrer reactor: The selective lactose oxidation in liquid phase over Au/Al2O3 nanostructured catalysts
(Elsevier, 2020)
The performance of rotating metallic monolith stirrer reactor was studied for selective lactose oxidation in liquid phase at 65 °C, atmospheric pressure and with air as oxidant agent. The Au/Al2O3deposition on metallic ...