Browsing by Subject "Hydrogen"
Now showing items 1-20 of 155
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2D nanosheet SnS2 solution-processed photoanodes: Unveiling enhanced visible light absorption for solar fuels applications
(Elsevier, 2024-08-05)
Article
Open AccessThe scale-up of photoelectrochemical water splitting and CO2 reduction is currently hindered by the excessive band gap of metal oxide photoanodes. Metal sulfides 2D nanostructured morphology offer improved optoelectronic ... -
3D microextrusion of eco-friendly water based cer-cer composite pastes for hydrogen separation
(2023-12-01)
Article
Open AccessCeramic membranes operating at high-temperatures are a key-technology for hydrogen separation processes. Cer-cer composites based on BaCe0.65Zr0.20Y0.15O3-d-Gd0.2Ce0.8O2-d have gained increasing attention as asymmetric ... -
3D printed microstructured Au/TiO2 catalyst for hydrogen photoproduction
(Elsevier, 2019-06-25)
Article
Open AccessWe successfully 3D printed Au/TiO2 monoliths for photogenerating hydrogen from water/ethanol gaseous mixtures under dynamic conditions. Monolith designs were printed by additive superposition of microfilaments of titania-based ... -
3D-Printed Co/YSZ catalyst for H2 production
(Universitat Politècnica de Catalunya, 2022-02-14)
Master thesis
Restricted access - author's decision3D printing is a constantly improving manufacturing technique. Due to its improvement, more and more possibilities are offered to us. Starting with impression of polymers, the multitude of possibilities is now vast, and ... -
7 - Hydrogen production in microreactors
(Elsevier, 2020-07-24)
Part of book or chapter of book
Restricted access - publisher's policyCatalytic microreactors constitute a crucial technology for process intensification in the production of hydrogen, particularly for on-site and/or onboard applications intended to feed fuel cells. This chapter describes ... -
A direct Z-scheme for the photocatalytic hydrogen production from a water ethanol mixture on CoTiO3/TiO2 heterostructures
(2021-01-01)
Article
Open AccessPhotocatalytic H2 evolution from ethanol dehydrogenation is a convenient strategy to store solar energy in a highly valuable fuel with potential zero net CO2 balance. Herein, we report on the synthesis of CoTiO3/TiO2 ... -
A hybrid strategy for mixed integer bi-level optimization applied to hydrogen energy supply chain management
(2020)
Conference report
Restricted access - publisher's policyThis paper addresses a supply chain management problem with consideration of production and distribution activities. The formulation is based on a mixed-integer bi-level programming approach as a mathematical model of the ... -
A million-microchannel multifuel steam reformer for hydrogen production
(2020-05-05)
Article
Open AccessA functionalized silicon micromonolith of 7 mm in diameter and 210 μm-thick was evaluated for the production of hydrogen from the steam reforming (SR) of various fuels, containing different functional groups, such as ... -
Adaptació d'una gasolinera a una hidrogenera
(Universitat Politècnica de Catalunya, 2023-10-31)
Bachelor thesis
Open AccessAquest projecte es basa en l’adaptació d’una estació de servei, en la que es subministren derivats del petroli, cap a una estació de servei on també es subministri hidrogen a pressió en estat gasós. Aquesta adaptació pretén ... -
Amorphous carbon modified nano-sized tungsten carbide as a gas diffusion electrode catalyst for the oxygen reduction reaction
(2015-01-01)
Article
Open AccessNanostructured tungsten carbide with high surface area and containing amorphous carbon is prepared by a low temperature combustion synthesis method. The nanostructured tungsten carbide is used as the catalyst in a gas ... -
Analysis of valorization process of aluminum breakage scraps to obtain green hydrogen
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-06)
Article
Open AccessIn this article, it is proposed to use aluminum breakage scraps to obtain green hydrogen through the aluminum–water reaction with caustic soda as a catalyst with experimental research. From this exothermic reaction, both ... -
Aplicabilidad de la producción catalítica de hidrógeno a partir de las aguas residuales en la industria de zumos de naranja
(Universitat Politècnica de Catalunya, 2020-07-22)
Master thesis
Open AccessLas aguas residuales procedentes de la industria de Zumos presentan una alta carga contaminante, debido al alto contenido de materia orgánica, sólidos en suspensión y variación de su pH, lo que hace viable y recomendable ... -
Aprovechamiento de residuos de aluminio industrial para la obtención controlada de hidrógeno mediante la reacción aluminio-agua
(2016-12-14)
Article
Open AccessLa aparición de vehículos que funcionan con pilas de combustible tipo PEM (membrana de intercambio de protones) plantea la necesidad de proporcionar hidrógeno de alta pureza de forma dosificada y a baja presión. ... -
Assessment of integration of methane-reduced ceria chemical looping CO2/H2O splitting cycle to an oxy-fired power plant
(2020-02-28)
Article
Open AccessIn this paper, we investigated the effect of reaction kinetics and moving bed reactors for chemical looping (CO2/H2O) splitting unit (CL) that produces syngas and fed back to the power plant to gain the efficiency loss due ... -
Assessment of oxygen production on the Moon through reduction of ilmenite
(Universitat Politècnica de Catalunya, 2010-02-12)
Master thesis
Open AccessIn the past 20 years, considerable attention been paid to returning to our natural satellite with robotic and, eventually, manned mission(s) not only to continue one the most scientifically fruitful exploration programs ... -
Barcelona Airport infrastructure impact analysis of switching fuel to hydrogen
(Universitat Politècnica de Catalunya, 2025-01-27)
Master thesis
Open AccessThis thesis explores the environmental and infrastructural impact of Josep Tarradellas Barcelona-El Prat Airport’s transition to hydrogen as a sustainable aviation fuel. Aviation is one of the most fossil fuel-dependent ... -
Bimetallic NiFe nanoparticles supported on CeO2 as catalysts for methane steam reforming
(American Chemical Society, 2023-05-12)
Article
Open AccessNi-Fe nanocatalysts supported on CeO2 have been prepared for the catalysis of methane steam reforming (MSR) aiming for coke-resistant noble metal-free catalysts. The catalysts have been synthesized by traditional incipient ... -
Bio-ethanol steam reforming and autothermal reforming in 3- m channels coated with RhPd/CeO2 for hydrogen generation
(2013-02)
Article
Restricted access - publisher's policyA silicon micromonolith of 7 mm diameter and 0.2 mm length containing 1.5 million regular channels with a diameter of 3.3 μm was used for obtaining hydrogen through ethanol or bio-ethanol steam reforming (ESR) and oxidative ... -
Catalytic activity and characterization of Fe-Zn-Mg-Al hydrotalcites in biohydrogen production
(2013-08-21)
Article
Restricted access - publisher's policyFour different M2þeMgeAl hydrotalcite (HT) materials were investigated for their effect on biohydrogen enhancement, where M2þ is Fe and/or Zn. HTs were synthesized by the coprecipitation method and characterized by ... -
Catalytic reforming of dimethyl ether in microchannels
(2018-03-09)
Article
Open AccessThe steam reforming and oxidative steam reforming of dimethyl ether (DME) were tested at 573–773¿K over a CuZn/ZrO2 catalyst in microreactors with three different types of channels: ceramic square channels with side lengths ...