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Listar por palabra clave "Hydrogen production"

Mostrando ítems 1-20 de 27

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Adjustment of the ZSM-5 zeolite support towards the efficient hydrogen production by ethanol steam reforming on cobalt catalysts

Grzybek, Gabriela; Greluk, Magdalena; Patulski, Piotr; Stelmachowski, Pawel; Tarach, Karolina; Slowik, Grzegorz; Rotko, Marek; Valencia Valencia, Susana; Rey Garcia, Fernando; Góra-Marek, Kinga (Elsevier, 2023-07-01)

[EN] The world is on track for replacing fossil fuels with alternative energy carriers. In the face of the ongoing global energy transformation, the focus is on hydrogen. Its production in the ethanol steam reforming (ESR) ...
Assessment of a Fully Renewable System for the Total Decarbonization of the Economy with Full Demand Coverage on Islands Connected to a Central Grid: The Balearic Case in 2040

Rivera, Yago; Blanco, D.; Bastida-Molina, Paula; Berna, C. (MDPI AG, 2023-08)

[EN] The transition to clean electricity generation is a crucial focus for achieving the current objectives of economy decarbonization. The Balearic Archipelago faces significant environmental, economic, and social challenges ...
Bioethanol Steam Reforming on Co/ITQ-18 Catalyst: Effect of the Crystalline Structure of the Delaminated Zeolite ITQ-18

Da Costa Serra, Javier Francisco; Chica, Antonio (Elsevier, 2011-03)

ITQ-18 delaminated zeolite has been used as Co support to synthesize steam reforming catalysts. The results obtained in the steam reforming of bioethanol indicate that a highly active and selective Co-based catalyst can ...
Bioethanol steam reforming on Ni-based modified mordenite. Effect of mesoporosity, acid sites and alkaline metals

Da Costa Serra, Javier Francisco; Navarro Ruiz, María Teresa; Rey Garcia, Fernando; Chica, Antonio (Elsevier, 2012-04)

Support plays an important role in the preparation of highly active and selective bioethanol steam reforming catalysts since it helps in the dispersion of metal particles and enhances its activity via metal-support ...
CARACTERIZACIÓN DE ELECTRODOS DE NÍQUEL DOPADOS CON NANOPARTÍCULAS DE ORO PARA LA OBTENCIÓN DE HIDRÓGENO

Torondel Díaz, Aaron Damián (Universitat Politècnica de València, 2021-10-06)

[ES] Hoy en día aún existen ciertos problemas para lograr la generación de hidrógeno que provenga de energías renovables, conocido como Hidrógeno Verde. Actualmente se busca mejorar los métodos de producción de hidrógeno ...
Caracterización de electrodos porosos de níquel dopados con nanopartículas de Pd para la producción de hidrógeno

Bujalance Calduch, Carlos (Universitat Politècnica de València, 2019-09-05)

[ES] La producción de hidrógeno como método de almacenamiento de energía está cobrando importancia sobretodo en combinación con las energías renovables. El hidrógeno es generado a partir de agua y energía eléctrica, por ...
Caracterización de electrodos porosos de níquel dopados con nanopartículas de Pd y Ag para la producción de hidrógeno

Navarro Díaz, Raúl (Universitat Politècnica de València, 2021-02-17)

[ES] En la actualidad, existe una dependencia elevada de los combustibles fósiles. El uso de dichos combustibles conlleva diversos problemas como la contaminación y el agotamiento de recursos. Para disminuir la dependencia ...
Catalysts based on Co-Birnessite and Co-Todorokite for the efficient production of hydrogen by ethanol steam reforming

Da Costa Serra, Javier Francisco; Chica, Antonio (Elsevier, 2018)

[EN] Two structured manganese oxides (Birnessite and Todorokite) containing Co have been studied in the steam reforming of ethanol. It has been found that both materials are active in the hydrogen production, exhibiting ...
Co and La supported on Zn-Hydrotalcite-derived material as efficient catalyst for ethanol steam reforming

Cerdá-Moreno, Cristina; Da Costa Serra, Javier Francisco; Chica, Antonio (Elsevier, 2019-05-17)

[EN] Four samples of Zn-hydrotalcite containing different amounts of Co (5, 10, 20, and 30 wt%) have been synthesized and tested in the steam reforming of ethanol. The best results were obtained with the sample containing ...
Descomposición catalítica del metano: análisis de reactores, catalizadores y condiciones experimentales

Sempere Díaz, Teresa (Universitat Politècnica de València, 2021-09-22)

[ES] La descarbonización del sector energético es un tema de vital importancia para prevenir un calentamiento global irreversible. Aunque las fuentes de energía renovables han sido el foco principal en las investigaciones ...
El hidrógeno como portador de energía: análisis de los métodos de producción, almacenamiento y distribución; de las aplicaciones y el potencial en Alemania

Moreno Corral, María de los Ángeles (Universitat Politècnica de València, 2020-10-13)

[ES] El sistema energético actual basado en combustibles fósiles y su consecuente calentamiento global y cambio climático han creado la necesidad de una total descarbonización del sistema. El objetivo de este proceso es ...
Electrochemical characterization of a NiCo/Zn cathode for hydrogen generation

Herraiz-Cardona, Isaac; Ortega Navarro, Emma María; Vázquez-Gómez, Lourdes; Pérez-Herranz, Valentín (PERGAMON-ELSEVIER SCIENCE LTD, 2011-09)

[EN] Hydrogen is considered to be the most promising candidate as a future energy carrier. One of the most used technologies for the electrolytic hydrogen production is alkaline water electrolysis. However, due to the high ...
Electrochemical recovery of zinc from the spent pickling baths coming from the hot dip galvanizing industry. Potentiostatic operation

Carrillo Abad, Jorge; García Gabaldón, Montserrat; Ortega Navarro, Emma María; Pérez-Herranz, Valentín (Elsevier, 2011-09)

An electrochemical reactor was developed to recover zinc from the spent pickling solutions coming from the hot dip galvanizing industry. These solutions mainly contain ZnCl2 and FeCl2 in aqueous HCl media. The effect of ...
Gas-Phase Photochemical Overall H2 S Splitting by UV Light Irradiation

Garcia-Baldovi, Hermenegildo; Albero-Sancho, Josep; Ferrer Ribera, Rosa Belén; Mateo-Mateo, Diego; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (John Wiley & Sons, 2017)

[EN] Splitting of hydrogen sulfide is achieved to produce valueadded chemicals. Upon irradiation at 254 nm in the gas phase and in the absence of catalysts or photocatalysts at near room temperature, H2S splits into ...
Hydrogel composites based on chitosan and CuAuTiO2 photocatalysts for hydrogen production under simulated sunlight irradiation

Ramírez, Oscar; López-Francés, Antón; Baldovi, Herme G.; Saldías, Cesar; Navalón Oltra, Sergio; Leiva, Angel; Díaz, David (Elsevier, 2024-07)

[EN] This study explored the photocatalytic hydrogen evolution reaction (HER) using novel biohydrogel composites comprising chitosan, and a photocatalyst consisting in TiO2 P25 decorated with Au and/or Cu mono- and bimetallic ...
Hydrogen Production from Methanol-Water Solution and Pure Water Electrolysis Using Nanocomposite Perfluorinated Sulfocationic Membranes Modified by Polyaniline

Sánchez-Diaz, Carlos; Espinos Gutierrez, Francisco Juan; Barjola, Arturo; Escorihuela, Jorge; Compañ Moreno, Vicente (MDPI AG, 2022-11)

[EN] In this work, we report the preparation of Nafion membranes containing two different nanocomposite MF-4SC membranes, modified with polyaniline (PANI) by the casting method through two different polyaniline infiltration ...
Maximizing the use of hydrogen as energy vector to cover the final energy demand for stand-alone systems, application and sensitivity analysis for the Canary Archipelago by 2040

Berna, C.; Rivera-Durán, Yago; Córdova-Chávez, Yaisel; Muñoz-Cobo, J. L. (Elsevier, 2023-09)

[EN] Fossil fuel-based economies must undergo a deep transition for complete decarbonization. To this end, it is widely recognized that all economies must move towards the electrification of energy end uses. Even though ...
Modelado de un sistema de power-to-hidrógeno basado en energía hidroeléctrica

Amezcua Medina, Joel Andrés (Universitat Politècnica de València, 2021-02-11)

[ES] El TFM a realizar consta del desarrollo de un modelo basado en la producción de hidrógeno mediante electrolisis de agua con membrana polimérica (PEM). Para ello, se va a realizar un modelo matemático teniendo en cuenta ...
Natural sepiolite promoted with Ni as new and efficient catalyst for the sustainable production of hydrogen by steam reforming of the biodiesel by-products glycerol

Menor-Valls, María; Sayas Valero, Salvador; Chica, Antonio (Elsevier, 2017)

[EN] Glycerol, a byproduct derived from the production of biodiesel, is currently in oversupply because of the increase of biodiesel production. One approach to alleviate this problem is to transform glycerol into valuable ...
Optimal allocation of energy sources in hydrogen production for sustainable deployment of electric vehicles

Rubio Montoya, Francisco José; Llopis-Albert, Carlos; Besa Gonzálvez, Antonio José (Elsevier, 2023-03)

[EN] We analyze the use of hydrogen as a fuel for the automotive industry with the aim of decarbonizing the economy. Hydrogen is a suitable option for avoiding pollutant gas emissions, developing environmentally friendly ...