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Browsing by Subject "Catalyst"

Now showing items 1-20 of 22

A highly stable and hierarchical tetrathiafulvalene-based metal organic framework with improved performance as a solid catalyst

Souto, Manuel; Santiago-Portillo, Andrea; Palomino Roca, Miguel; Vitorica-Yrezabal, Iñigo J.; Vieira, Bruno J. C.; Waerenborgh, João C.; Valencia Valencia, Susana; Navalón Oltra, Sergio; Rey Garcia, Fernando; García Gómez, Hermenegildo; Minguez Espallargas, Guillermo (The Royal Society of Chemistry, 2018-03)

[EN] Herein we report the synthesis of a tetrathiafulvalene (TTF)-based MOF, namely MUV-2, which shows a non-interpenetrated hierarchical crystal structure with mesoporous one-dimensional channels of ca. 3 nm and orthogonal ...
Catalizadores bifuncionales basados en Pd para la obtención de nitrilos a partir de alcoholes en un proceso one-pot

Cremades Llopis, Ángela (Universitat Politècnica de València, 2014-09-24)

[EN] One-pot reaction for obtaining nitriles from alcohols using different metal acid catalyst type.
Catalytic activation of ceramic H2 membranes for CMR processes

Escolástico Rozalén, Sonia; KJOLSETH, C.; Serra Alfaro, José Manuel (Elsevier, 2016-11-01)

[EN] The application of catalytic membrane reactors can overcome some of the disadvantages that reactions for the direct conversion of methane to fuels and petrochemicals present. Hydrogen separation membranes can shift ...
Catalytic surface promotion of highly active La0.85Sr0.15Cr0.8Ni0.2O3-delta anodes for La5.6WO11.4-delta based proton conducting fuel cells

Solis Díaz, Cecilia; Balaguer Ramirez, Maria; Bozza, F.; Bonanos, Nikos; Serra Alfaro, José Manuel (Elsevier, 2014)

[EN] La0.85Sr0.15CrO3-delta (LSC), La0.85Sr0.15Cr0.8Ni0.2O3-delta (LSCN) and LSCN infiltrated with Ni nanoparticles were tested as anodes for symmetrical cells based on La5.6WO11.4-delta (LWO) protonic electrolyte. These ...
Desarrollo de Técnicas de diagnóstico a bordo para catalizadores de oxidación diesel

Mora Pérez, Javier (Universitat Politècnica de València, 2016-07-22)

[EN] Present work develops on-board diagnostics (OBD) techniques for diesel oxidation catalysts (DOC). As computational resources in modern electronic control units (ECU) are scarce, algorithms must consider the time ...
Effects of low pressure exhaust gas recirculation on regulated and unregulated gaseous emissions during NEDC in a light-duty diesel engine

Bermúdez, Vicente; Luján, José M.; Plá Moreno, Benjamín; Linares Rodríguez, Waldemar Gregorio (Elsevier, 2011-09)

Regulated and unregulated gaseous emissions with high pressure and low pressure EGR (exhaust gas recirculation) system were tested in a 4-cylinder, light-duty diesel EURO IV engine typically used in European vehicles. Four ...
Enhancing oxygen permeation through Fe2NiO4-Ce0.8Tb0.2O2-delta composite membranes using porous layers activated with Pr6O11 nanoparticles

García-Fayos, Julio; Ruhl, R.; Navarrete Algaba, Laura; Bouwmeester, H.; Serra Alfaro, José Manuel (The Royal Society of Chemistry, 2018)

[EN] Fe2NiO4-Ce0.8Tb0.2O2-delta (NFO-CTO) composite membranes are of interest to separate oxygen from air. In this study, we investigate the influence of the catalytic activation of NFO-CTO membranes on the oxygen permeation ...
Experimental investigation on the efficiency of a diesel oxidation catalyst in a medium-duty multi-cylinder RCCI engine

Benajes, Jesús; García Martínez, Antonio; Monsalve-Serrano, Javier; Lago-Sari, Rafael (Elsevier, 2018)

[EN] Reactivity controlled compression ignition (RCCI) combustion is one of the most promising low temperature combustion (LTC) techniques, as it is able to provide ultra-low NOx and soot emissions together with higher ...
Highly effective activation of aryl chlorides for Suzuki coupling in aqueous media using a ferrocene-based Pd(II) diimine catalyst

Hanhan, Emre Murat; Martínez Mañez, Ramón; Ros-Lis, José Vicente (Elsevier, 2012-05-09)

The Suzuki coupling of aryl chlorides with boronic acids using a ferrocene-containing Pd(II)-diimine complex as catalyst, in aqueous media, under microwave heating is reported. A small amount of the catalyst (0.1%) was ...
Modelado analítico y numérico del comportamiento acústico de dispositivos de la línea de escape en vehículos. Aplicación a sistemas catalizador/trampa de partículas

Tortosa Martínez, Guillermo (Universitat Politècnica de València, 2020-10-15)

[ES] Este Trabajo Fin de Máster desarrolla e implementa una metodología numérica, basada en el método de los elementos finitos, integrada en el programa comercial Comsol Multiphysics. En éste se modela el comportamiento ...
New micro and mesoporous materials for the reaction of methanol to olefins

Li, Zhibin (Universitat Politècnica de València, 2014-11-17)

(1) We will show that nano sized samples of SAPO-34 synthesized by microwave heating presents much higher lifetime than standard-SAPO-34 synthesized by conventional hydrothermal method for the reaction of methanol to ...
Oxygen permeation studies in surface Pd-activated asymmetric Ce0.9Gd0.1O1.95 membranes for application in CO2 and CH4 environments

García-Fayos, Julio; Sogaard, Martin; Kaiser, Andreas; Serra Alfaro, José Manuel (Elsevier, 2019-06-01)

[EN] Oxygen Transport Membranes (OTMs) present a high potential for being considered in the integration of O-2 supply systems in oxyfuel installations, as well as for the conduction of chemical reactions when operating ...
Oxygen permeation through tape-cast asymmetric all-La0.6Sr0.4Co0.2Fe0.8O3 (-) (delta) membranes

Serra Alfaro, José Manuel; García Fayos, Julio; Baumann, S.; Schulze-Kueppers, F.; Meulenberg, W. A. (Elsevier, 2013-11-15)

[EN] One of the most promising materials for oxygen separation amongst ceramic oxygen transport membranes (OTMs) is La0.6Sr0.4Co0.2Fe0.8O3 (-delta) (LSCF) due to its relatively high oxygen permeability combined with high ...
Performance of a conventional diesel aftertreatment system used in a medium-duty multi-cylinder dual-mode dual-fuel engine

García Martínez, Antonio; Monsalve-Serrano, Javier; Villalta-Lara, David; Lago-Sari, Rafael (Elsevier, 2019-03-15)

[EN] Dual-mode dual-fuel combustion stands as one of the promising techniques to allow the dual-fuel operation along the whole engine map. This concept relies on using different combustion strategies as reactivity controlled ...
Photobiocatalytic chemistry of oxidoreductases using water as the electron donor

Mifsud Grau, María; Gargiulo, Serena; Iborra Chornet, Sara; Arends, Isabel W. C. E.; Hollmann, Frank; Corma Canós, Avelino (Nature Publishing Group, 2014-01)

[EN] To date, water has been poorly studied as the sacrificial electron donor for biocatalytic redox reactions using isolated enzymes. Here we demonstrate that water can also be turned into a sacrificial electron donor to ...
Preparación y caracterización de catalizadores para pila de membrana de intercambio protónico

Blanco Redondo, Lucinda (Universitat Politècnica de València, 2020-06-01)

[ES] En la actualidad, la creciente demanda de energía, el agotamiento de los combustibles fósiles y las consecuencias negativas de su uso hacen necesario el desarrollo de nuevas tecnologías que palíen la situación de un ...
Self-Assembly of Catalytically Active Supramolecular Coordination Compounds within Metal Organic Frameworks

Adam-Ortiz, Rosa; Mon, M.; Greco, Rossella; Kalinke, Lucas H.G.; Vidal Moya, José Alejandro; Fernandez, Antonio; Winpenny, Richard E.P.; Doménech-Carbó, Antonio; Leyva Perez, Antonio; Armetano, Donatella; Pardo, Emilio; Ferrando-Soria, Jesús (American Chemical Society, 2019-07-03)

[EN] Supramolecular coordination compounds (SCCs) represent the power of coordination chemistry methodologies to self-assemble discrete architectures with targeted properties. SCCs are generally synthesized in solution, ...
Size-controlled photochemical synthesis of niobium nanoparticles

Malyshev, Dimitriy; Bosca Mayans, Francisco; Crites, Charles-Oneil L.; Hallett-Tapley, Geniece L.; Netto-Ferreira, José Carlos; Alarcon, Emilio I.; Scaiano, Juan C. (Royal Society of Chemistry, 2013)

The size of photochemically-prepared niobium nanoparticles (NbNP) can be controlled by varying the concentration of the photoinitiator in the reaction mixture. The particles, which may be metallic in nature, are readily ...
Sizing a conventional diesel oxidation catalyst to be used for RCCI combustion under real driving conditions

García Martínez, Antonio; Piqueras, P.; Monsalve-Serrano, Javier; Lago-Sari, Rafael (Elsevier, 2018)

[EN] Reactivity controlled compression ignition (RCCI) combustion has demonstrated to be able to avoid the NOx-soot trade-off appearing during conventional diesel combustion (CDC), with similar or better thermal efficiency ...
Síntesis de zeolitas de estructura LTA con distinta relación Si/Al y su aplicación como catalizadores en la reacción de metanol a olefinas

Liu, Sichen (Universitat Politècnica de València, 2017-09-04)

El objetivo de este trabajo es sintetizar varias zeolitas de estructura LTA con distinta relación Si/Al y emplearlas como catalizadores en la reacción de metanol a olefinas con el fin de estudiar la influencia del contenido ...