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Listar por palabra clave "Nickel"

Mostrando ítems 1-20 de 30

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A new selective fluorogenic probe for trivalent cations

Barba Bon, Andrea; Costero, Ana; Gil Grau, Salvador; Parra Álvarez, Margarita; Soto Camino, Juan; Martínez Mañez, Ramón; Sancenón Galarza, Félix (Royal Society of Chemistry, 2012)

[EN] A new selective chromo-fluorogenic probe for Fe 3+, Cr 3+ and Al 3+ is reported. Detection limits are in the ¿M range and the fluorogenic sensing ability could be observed by the naked eye when illuminated with UV-light. ...
A Square-Planar Dinickel(II) Complex with a Noninnocent Dinucleating Oxamate Ligand: Evidence for a Ligand Radical Species

Aukauloo, A.; Ottenwaelder, X.; Ruiz, R.; Poussereau, S.; Pei, Y.; Journaux, Y.; Fleurat, P.; Volatron, F.; Cervera, B.; Muñoz Roca, María Del Carmen (John Wiley & Sons, 1999-06-17)

[EN] The new bimetallic nickel(II) compound (PPh4)4[Ni2(2)]·6H2O (3), where H8[2] stands for N,N',N'',N'''-1,2,4,5-benzene-tetrayltetrakis(oxamic acid), has been synthesized and its crystal structure determined by ...
Catalizadores de Níquel basados en Sepiolita natural aplicados al reformado con vapor de Bioetanol

López Gil, Eva (Universitat Politècnica de València, 2013-06-17)

[ES] Preparación de catalizadores en la producción de hidrógeno a partir de bioetanol utilizando catalizadores de níquel soportados sobre sepiolita natural
CuNi/Al hydrotalcites synthesized in presence of microwave irradiation

Ayala, Abraham; Fetter, Geolar; Palomares Gimeno, Antonio Eduardo; Bosch, Pedro (Elsevier, 2011)

[EN] To enhance the electronic properties of nanoparticles, functional clusters are usually supported on metal oxides as alumina. Copper and nickel clusters supported on magnesia or alumina are promising materials to ...
Design of bi-functional Ni-zeolites for ethylene oligomerization: Controlling Ni speciation and zeolite properties by one-pot and post-synthetic Ni incorporation

Martínez-Gómez-Aldaraví, Adrián; Paris, Cecilia; Moliner Marin, Manuel; Martínez, Cristina (Elsevier, 2023-10)

[EN] The design of diverse Ni-zeolites has been performed attempting to control different physico-chemical properties of the zeolite supports as well as the Ni speciation to study their influence on the industrially relevant ...
Design of improved hydrocracking catalysts by increasing the proximity between acid and metallic sites

Francis, J.; Guillon, E.; Bats, Nicolas; Pichon, C.; Corma Canós, Avelino; Simon, L.J. (Elsevier, 2011-12-15)

A new approach was undertaken to increase the bifunctionality of USY zeolite based catalyst. Nickel metallic phase was first impregnated onto USY zeolite and composite catalysts NiMo/[γ-Al2O3 + (Ni)/USY] were prepared from ...
Determination of transport properties of Ni(II) through a Nafion cation-exchange membrane in chromic acid solutions

Martí Calatayud, Manuel César; García Gabaldón, Montserrat; Pérez-Herranz, Valentín; Ortega Navarro, Emma María (Elsevier, 2011-07-07)

The transport properties of a cation-exchange membrane in the presence of nickel sulphate solutions were investigated by means of chronopotentiometry. The interest of this study relies on the application to the treatment ...
Double-template fabrication of three-dimensional porous nickel electrodes for hydrogen evolution reaction

Herraiz-Cardona, Isaac; Ortega Navarro, Emma María; Vázquez-Gómez, Lourdes; Pérez-Herranz, Valentín (PERGAMON-ELSEVIER SCIENCE LTD, 2012-02)

[EN] Three-dimensional (3D) porous nickel structures were fabricated via a double-template electrochemical deposition process. The construction of the foam structures was achieved by means of a hydrogen bubble dynamic ...
Effects of lanthanide doping on the electrode properties and exsolution behavior of A-site deficient Sr 1.9 Fe 1.3 Ni 0.2 Mo 0.5 O 6-8 double perovskites

Delgado-Galicia, Blanca; López-García, Andrés; Carrillo-Del Teso, Alfonso Juan; Serra Alfaro, José Manuel (Elsevier, 2024-07)

[EN] Double perovskite oxides of the Sr 2 Fe 1.5 Mo 0.5 O 6-8 class are promising electrodes for Solid Oxide Fuel Cells (SOFCs) and Electrolyzers (SOECs) due to their outstanding electrochemical properties and durability. ...
El fango activado como adsorbente de cobre, níquel y cianuro

Castro Rubio, Estefanía; Lloret Salinas, Sergio; Aguado García, Daniel; Barat, Ramón (Infoedita, 2019-10)

[EN] Conventional wastewater treatment plants (WWTP) used to get an insufficient removal of pollutants such as copper, nickel and cyanide, which can affect the aquatic media quality that receiving the final effluent. In ...
Enhanced NiO Dispersion on a High Surface Area Pillared Heterostructure Covered by Niobium Leads to Optimal Behaviour in the Oxidative Dehydrogenation of Ethane

Rodríguez-Castellón, Enrique; Delgado-Muñoz, Daniel; Dejoz, Ana; Vázquez, Isabel; Agouram, Said; Cecilia, Juan A.; Solsona, Benjamín; López Nieto, José Manuel (John Wiley & Sons, 2020-07-27)

[EN] A Nb-containing siliceous porous clay heterostructure (PCH) with Nb contents from 0 to 30 wt %) was prepared from a bentonite and used as support in the preparation of supported NiO catalysts with NiO loading from 15 ...
Furfural steam reforming over Ni-based catalysts. Influence of Ni incorporation method

Sayas Valero, Salvador; Chica, Antonio (Elsevier, 2014-03-26)

Catalytic steam reforming of biomass-derived compounds as furfural could be a promising option to produce renewable hydrogen; however efficient catalysts are still under study. Different commercial supports (SiO2, Al2O3, ...
Influence of Temperature on the Corrosion Behaviour and on the Hydrogen Evolution Reaction on Nickel and Stainless Steels in LiBr Solutions

Guiñón Pina, Virginia; Igual Muñoz, Anna Neus; García Antón, José (Electrochemical Science Group, 2011)

[EN] The effects of temperature and hydrogen generation on the passive behaviour of nickel, austenitic and duplex stainless steels are investigated in lithium bromide aqueous solution (992 g/l) by Open Circuit Potential ...
Microwave-Driven Exsolution of Ni Nanoparticles in A-Site Deficient Perovskites

López-García, Andrés; Domínguez-Saldaña, Aitor; Carrillo-Del Teso, Alfonso Juan; Navarrete Algaba, Laura; Valls-Esteve, María Inmaculada; García-Baños, Beatriz; Plaza González, Pedro José; Catalá Civera, José Manuel; Serra Alfaro, José Manuel (American Chemical Society, 2023-11-17)

[EN] Exsolution has emerged as a promising method for generating metallic nanoparticles, whose robustness and stability outperform those of more conventional deposition methods, such as impregnation. In general, exsolution ...
Mixed Proton-Electron Conducting Chromite Electrocatalysts as Anode Materials for LWO-Based Solid Oxide Fuel Cells

Solis Díaz, Cecilia; Vert Belenguer, Vicente Bernardo; Balaguer Ramírez, María; Escolástico Rozalén, Sonia; Roitsch, Stefan; Serra Alfaro, José Manuel (Wiley-VCH Verlag, 2012-11)

[EN] Chromite anodes in LWO PC-SOFC: Chemically compatible LSCN/LWO symmetric cells show the high protonic conductivity and p-type electronic conductivity of LSCN in reducing atmospheres. This allows to avoid blending with ...
New Catalysts based on Ni-Birnessite and Ni-Todorokite for the Efficient Production of Hydrogen by Bioethanol Steam Reforming

Fuertes, A.; Da Costa Serra, Javier Francisco; Chica, Antonio (Elsevier, 2012)

Catalytic steam reforming of bioethanol seems to be a promise option to produce renewable hydrogen; however efficient catalysts are still under development. Recently, manganese oxide based materials (MO) are the subject ...
Nickel exsolution driven phase transformation from an n=2 to an n=1 Ruddlesden Popper manganite for methane steam reforming reaction in SOFC conditions

Vecino-Mantilla, Sebastián; Gauthier-Maradei, Paola; Huvé, Marielle; Serra Alfaro, José Manuel; Roussel, Pascal; Gauthier, Gilles H. (John Wiley & Sons, 2019-09-19)

[EN] An original way to perform the exsolution of Ni nanoparticles on a ceramic support was explored for the development of methane steam reforming catalyst in SOFC anode conditions. The n=2 Ruddlesden-Popper (RP) phase ...
Nickel exsolution effect on the catalytic behavior of ruddlesden-popper manganites in sofc conditions using colombian natural gas

Vecino Mantilla, Juan Sebastián (Universitat Politècnica de València, 2020-09-02)

[EN] Several major problems have to be solved before Solid Oxide Fuel Cells (SOFC) can operate continuously using hydrocarbon fuels such as natural gas. The risk of low catalytic behavior for fuel reforming, the carbon ...
Novel heterogenous catalysts for the selective hydrogenation of CO2 to CH4

Machado Da Silva, Raul Bruno (Universitat Politècnica de València, 2025-01-16)

[ES] El cambio climático es uno de los mayores desafíos del siglo XXI, requiriendo tecnologías que usen energías renovables y fuentes alternativas de carbono para generar y almacenar combustibles. Una solución es la ...
Oligomerización de Etileno sobre catalizadores heterogéneos Ni-BETA. Estudio cinético preliminar

Moussa Martí, Sara (Universitat Politècnica de València, 2013-06-17)

[ES] En este trabajo se muestra el catalizador NI-Beta como activo y estable en la ollgomerización heterogénea de etileno. No todas las especies de Ni ocupando posiciones de intercambio resultaron Igualmente activas. Se ...