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Browsing by Subject "Catalyst"

Now showing items 1-15 of 15

Catalizadores bifuncionales basados en Pd para la obtención de nitrilos a partir de alcoholes en un proceso one-pot

Cremades Llopis, Ángela (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 ...
Desarrollo de Técnicas de diagnóstico a bordo para catalizadores de oxidación diesel

Mora Pérez, Javier (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 ...
New micro and mesoporous materials for the reaction of methanol to olefins

Li, Zhibin (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 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 ...
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 ...
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 (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 ...
Synergetic effect of microwave plasma and catalysts in CO2 methanation

Alrafei, Bachar; Delgado-Liriano, Jose; Ledoux, Alain; Polaert, Isabelle (Editorial Universitat Politècnica de València, 2019-10-15)

[EN] The reduction of CO2 concentration in our atmosphere consists in a big challenge for researchers, who are trying to explore novel technologies in order to transform CO2 into high added-value products. CO2 conversion ...
Understanding the kinetic behavior of a Mo-V-Te-Nb mixed oxide in the oxydehydrogenation of ethane

Quintana-Solorzano, R.; Barragan-Rodriguez, G.; Armendariz-Herrera, H.; López Nieto, José Manuel; Valente, Jaime S. (Elsevier, 2014-12-15)

Two kinetic models based on Langmuir-Hinshelwood (LH) and Eley-Rideal (ER) mechanisms were developed to describe the oxydehydrogenation of ethane to yield ethylene over a Mo-V-Te-Nb catalyst. Obtained in a lab-scale fixed-bed ...