Exploració per autor "Angurell Purroy, Inmaculada"
Ara es mostren els items 1-19 de 19
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4-Mercaptophenyldiphenylphosphine as linker to immobilize Pd onto the surface of magnetite nanoparticles. Excellent catalytic efficiency of the system after partial linker removal
Guarnizo, A; Angurell Purroy, Inmaculada; Rosell, Monica; Llorca Piqué, Jordi; Müller Jevenois, Guillermo; Seco, M; Rossell Alfonso, Josep Oriol (2015-10-27)
Article
Accés obertThis journal is © The Royal Society of Chemistry. The molecule 4-mercaptophenyldiphenylphosphine (Sdp) has been synthesized for use as a linker to immobilize Pd nanoparticles onto the surface of magnetite nanoparticles. ... -
A general approach to fabricate fe3O4 nanoparticles decorated with Pd, Au, and Rh: Magnetically recoverable and reusable catalysts for Suzuki C-C cross-coupling reactions, hydrogenation, and sequential reactions
Gonzàlez de Rivera, Ferran; Angurell Purroy, Inmaculada; Rossell Abrodos, Marta-Dacil; Erni, Rolf P.; Llorca Piqué, Jordi; Jiménez Divins, Nuria; Müller Jevenois, Guillermo; Seco García, Miquel Angel; Rossell Alfonso, Josep Oriol (2013-09-02)
Article
Accés restringit per política de l'editorialA facile strategy has been explored for loading noble metals onto the surface of ferrite nanoparticles with the assistance of phosphine-functionalized linkers. Palladium loading is shown to occur with participation of both ... -
CO oxidation and COPrOx over preformed Au nanoparticles supported over nanoshaped CeO2
Soler Turu, Lluís; Casanovas Grau, Albert; Urrich, Aitor; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2016-02-10)
Article
Accés obertAu/CeO2 (0.25% wt. Au) catalysts were prepared by anchoring preformed Au nanoparticles over ceria polycrystals, cubes and rods and tested in the oxidation of CO and COPrOx. The use of preformed Au nanoparticles assured a ... -
CO Total and Preferential Oxidation over Stable Au/TiO2 Catalysts Derived from Preformed Au Nanoparticles
Jiménez Divins, Nuria; López López, Eduardo; Angurell Purroy, Inmaculada; Neuberg, Stefan; Zapf, Ralf; Kolb, Gunther; Llorca Piqué, Jordi (2020-09-07)
Article
Accés obertCO preferential oxidation (PROX) is an effective method to clean reformate H2 streams to feed low-temperature fuel cells. In this work, the PROX and CO oxidation reactions were studied on preformed Au nanoparticles (NPs) ... -
Dynamic photocatalytic hydrogen production from ethanol-water mixtures in an optical fiber honeycomb reactor loaded with Au/TiO2
Taboada Cabellos, Elena; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2014-01-01)
Article
Accés restringit per política de l'editorialCordierite honeycombs loaded with different amounts of Au/TiO2 have been used in an optical fiber photoreactor illuminated with UV LEDs to produce hydrogen from ethanol and water-ethanol mixtures. The photoreactions have ... -
Dynamic reorganization of bimetallic nanoparticles under reaction depending on the support nanoshape: the case of RhPd over ceria nanocubes and nanorods under ethanol steam reforming
Soler Turu, Lluís; Casanovas Grau, Albert; Ryan, James; Angurell Purroy, Inmaculada; Escudero, Carlos; Pérez Dieste, Virginia; Llorca Piqué, Jordi (2019-04-05)
Article
Accés restringit per política de l'editorialBimetallic catalysts exhibit high performance compared to that of their monometallic counterparts in a wide range of catalytic reactions. Both geometric and electronic phenomena yield unique properties that cannot be ... -
Effect of temperature on the gas-phase photocatalytic H2 generation using microreactors under UVA and sunlight irradiation
Castedo Rodríguez, Alejandra; Casanovas Grau, Albert; Angurell Purroy, Inmaculada; Soler Turu, Lluís; Llorca Piqué, Jordi (2018-06-15)
Article
Accés obertThe effect of temperature on the photocatalytic hydrogen generation from a gaseous water-ethanol mixture has been tested in a silicone microreactor containing nine microchannels of 500 µm (width) × 1 mm (depth) × 47 mm ... -
Effect of TiO 2 nanoshape on the photoproduction of hydrogen from water-ethanol mixtures over Au 3 Cu/TiO 2 prepared with preformed Au-Cu alloy nanoparticles
Martínez, Lester; Soler Turu, Lluís; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2019-07-05)
Article
Accés obertA series of TiO2 nanoshapes (microurchins, nanobelts, nanowires, microrods and nanotubes) were prepared and decorated with preformed nanoparticles of Au-Cu alloy (Au:Cu¿=¿3:1 molar, 1¿wt.% metal content). The resulting ... -
Electrochemical detection of the L-cysteine using a carbon paste electrode modified with a conjugate of tetraamino cobalt (II) pthalocyanine and gold nanoparticles
Friederici, Mario; Angurell Purroy, Inmaculada; Rosell, Oriol; Seco García, Miquel Angel; Muller, Carlos; Llorca Piqué, Jordi (2015-06-01)
Article
Accés obertGold nanoparticles protected with a mixture of hexanothiol and MUA (11-mercaptoundecanoic acid) (AuNP1) were reacted with Co(II) tetraaminophtalocyanine (CoTAPc). The resulting nanoparticles formed via covalent bonds, ... -
Highly water-dispersible magnetite-supported Pd nanoparticles and single atoms as excellent catalysts for Suzuki and hydrogenation reactions
Guarnizo, A; Angurell Purroy, Inmaculada; Müller Jevenois, Guillermo; Llorca Piqué, Jordi; Seco García, Miquel Angel; Rossell Alfonso, Josep Oriol; Rossell Abrodos, Marta-Dacil (2016)
Article
Accés obertThe molecule 4-(diphenylphosphino) benzoic acid (dpa) anchored on the surface of magnetite nanoparticles permits the easy capture of palladium ions that are deposited on the surface of the magnetite nanoparticles after ... -
Hydrogen photoproduction from bio-derived alcohols in an optical fiber honeycomb reactor loaded with Au/TiO2
Taboada Cabellos, Elena; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2014-05-01)
Article
Accés restringit per política de l'editorialCordierite honeycombs loaded with 1 wt.% Au/TiO2 have been used in an optical fiber photoreactor illuminated with UV LEDs to produce hydrogen at 298 K from aqueous methanol, ethanol, glycerol, bio-ethanol, and bio-glycerol ... -
Hydrogen photoproduction from ethanol-water mixtures over Au-Cu alloy nanoparticles supported on TiO2
Bonmatí i Lladó, Eduard; Casanovas Grau, Albert; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2015-03-01)
Article
Accés obertAu/TiO2, Au0.75Cu0.25/TiO2, Au0.5Cu0.5/TiO2 and Au0.25Cu0.75/TiO2 photocatalysts prepared from pre-formed Au and Au-Cu alloy nanoparticles of controlled composition and size were loaded over ceramic honeycombs (2 mg cm(-2)) ... -
Improved stability of Pd/Al2O3 prepared from palladium nanoparticles protected with carbosilane dendrons in the dimethyl ether steam reforming reaction
Ramos Guzmán, Erika Paola; Davin, Laia; Angurell Purroy, Inmaculada; Ledesma Rodriguez, Cristian; Llorca Piqué, Jordi (2015-07-01)
Article
Accés obertThe dimethyl ether steam reforming reaction to generate hydrogen was tested over 1wt% Pd/Al2O3 catalysts prepared from different precursors. The conventional catalyst prepared by incipient wetness impregnation from palladium ... -
influence of the support on surface rearrangements of bimetallic nanoparticles in real catalysts
Divins, N.J.; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2014-10-31)
Article
Accés restringit per política de l'editorialCatalysts used for heterogeneous processes are usually composed of metal nanoparticles dispersed over a high–surface-area support. In recent years, near-ambient pressure techniques have allowed catalyst characterization ... -
Macroporous silicon microreactor for the preferential oxidation of CO
Jiménez Divins, Nuria; López, E.; Llorca Piqué, Jordi; Vega, Didac; Rodríguez, A.; Gonzàlez de Rivera, Ferran; Angurell Purroy, Inmaculada; Seco García, Miquel Angel; Rossell Alfonso, Josep Oriol (IEEEXPLORE, 2013)
Article
Accés restringit per política de l'editorialA macroporous silicon micromonolith containing ca. 40,000 regular channels of 3.3 ¿m in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) ... -
Magnetite-supported palladium single-atoms do not catalyse the hydrogenation of alkenes but small clusters do
Rosell, Marta D.; Caparrós, Francisco J.; Angurell Purroy, Inmaculada; Müller Jevenois, Guillermo; Llorca Piqué, Jordi; Seco García, Miquel Angel; Rosell, Oriol (2016-01-01)
Article
Accés obertThe activity of supported noble metal catalysts strongly depends on the particle size. The ultimate small-size limit is the single-atom catalyst (SAC), which maximizes the catalytic efficiency in the majority of the examples. ... -
NH2- or PPh2-functionalized linkers for the immobilization of palladium on magnetite nanoparticles?
Caparrós, Francisco J.; Guarnizo, A; Rossell Abrodos, Marta-Dacil; Angurell Purroy, Inmaculada; Seco García, Miquel Angel; Müller Jevenois, Guillermo; Llorca Piqué, Jordi; Rossell Alfonso, Josep Oriol (2017-01-01)
Article
Accés obertImmobilization of palladium on magnetite nanoparticles has been carried out with the assistance of two differently functionalized linkers containing phosphino- or amino-terminated groups. The linkers have been anchored to ... -
Remarkable carbon dioxide hydrogenation to ethanol on a palladium/iron oxide single-atom catalyst
Caparrós, Francisco J.; Soler Turu, Lluís; Rossell Abrodos, Marta-Dacil; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2018-06-07)
Article
Accés restringit per política de l'editorialThe hydrogenation of CO2 into value-added chemicals is one of the most investigated methods to reduce CO2 emissions in the atmosphere and thereby contributes to a sustainable chemical industry. Whereas the catalytic ... -
Silicone microreactors for the photocatalytic generation of hydrogen
Castedo Rodríguez, Alejandra; Mendoza Gómez, Ernesto; Angurell Purroy, Inmaculada; Llorca Piqué, Jordi (2016-09-15)
Article
Accés obertA silicone microreactor with 500 mu m-width microchannels coated with a Au/TiO2 photocatalyst was manufactured and tested for the photocatalytic generation of hydrogen from gaseous water-ethanol mixtures under dynamic ...