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Browsing by Author "Concepción Heydorn, Patricia"

Now showing items 1-20 of 114

A heterogeneous mechanism for the catalytic decomposition of hydroperoxides and oxidation of alkanes over CeO2 nanoparticles: A combined theoretical and experimental study

López Auséns, Javier Tirso; Boronat Zaragoza, Mercedes; Concepción Heydorn, Patricia; Chouzier, Sandra; Mastroianni, Sergio; Corma Canós, Avelino (Elsevier, 2016)

[EN] A nanoparticulate CeO2 catalyst is presented that is able to oxidize cyclohexane to K/A-oil (a mixture of cyclohexanone and cyclohexanol) using hydroperoxides as oxidizing species. The improvement in selectivity with ...
A study of the oxidehydration of 1,2-propanediol to propanoic acid with bifunctional catalysts

Bandinelli, Claudia; Lambiase, Barbara; Tabanelli, Tommaso; De Maron, Jacopo; Dimitratos, Nikolaos; Basile, Francesco; Concepción Heydorn, Patricia; López Nieto, José Manuel; Cavani, Fabrizio (Elsevier, 2019-07-25)

[EN] The gas-phase oxidehydration (ODH) of 1,2-propanediol to propionic acid has been studied as an intermediate step in the multi-step transformation of bio-sourced glycerol into methylmethacrylate. The reaction involves ...
Active and Regioselective Ru Single-Site Heterogeneous Catalystsfor Alpha-Olefin Hydroformylation

Escobar-Bedia, Francisco Javier; Lopez-Haro, Miguel; Calvino, Jose Juan; Martin-Diaconescu, Vlad; Simonelli, Laura; Pérez-Dieste, Virginia; Sabater Picot, Mª José; Concepción Heydorn, Patricia; Corma Canós, Avelino (American Chemical Society, 2022-04-01)

[EN] A heterogeneous ruthenium catalyst consisting ofisolated single atoms and disordered clusters stabilized in a N-doped carbon matrix has been synthesized with very good activityand remarkable regioselectivity in the ...
Aerobic epoxidation of propene over silver (111) and (100) facet catalysts

Pulido Junquera, Maria Angeles; Concepción Heydorn, Patricia; Boronat Zaragoza, Mercedes; Corma Canós, Avelino (Academic PressElsevier, 2012-08)

Catalytic performance of single-crystal Ag(100) and Ag(111) catalysts for propene oxidation has been investigated by means of Raman spectroscopy and mass spectrometry, and the energy profile has been obtained at the DFT-D ...
Aerobic oxidation of sulfides to sulfoxides catalyzed by gold/manganese oxides

Taketoshi, Ayako; Concepción Heydorn, Patricia; García Gómez, Hermenegildo; Corma Canós, Avelino; Haruta, Masatake (Chemical Society of Japan, 2013-12-15)

Although selective oxidation of sulfides to sulfoxides with molecular oxygen is a difficult reaction due to the overoxidation to sulfone, manganese oxides were found to catalyze the aerobic oxidation of sulfides to sulfoxides ...
Alkali-promoted V2O5 catalysts for the partial oxidation of H2S to sulphur

Soriano Rodríguez, Mª Dolores; López Nieto, José Manuel; Ivars Barceló, Francisco; Concepción Heydorn, Patricia; Rodriguez-Castellon, E. (Elsevier, 2012-09-30)

[EN] Present paper describes the influence of the incorporation of alkali metal cations (AM = Li, Na, K, Cs; and an AM/V ratio of 0.04) and Na-content (Na/V ratio of 0.02-0.30) in alkali metal promoted V2O5 catalyst on ...
Atomic-level understanding on the evolution behavior of subnanometric Pt and Sn species during high-temperature treatments for generation of dense PtSn clusters in zeolites

Liu, Lichen; Lopez-Haro, Miguel; Wittee Lopes, Christian; MEIRA, DEBORA M.; Concepción Heydorn, Patricia; Calvino, José J.; Corma Canós, Avelino (Elsevier, 2020-11)

[EN] To achieve high-loading of stable subnanometric metal clusters on solid carriers is a challenge since those small metal clusters have strong tendency to sinter into larger nanoparticles. Development of facile synthesis ...
Au@UiO-66: a base free oxidation catalyst

Leus, K; Concepción Heydorn, Patricia; Vandichel, M.; Meledina, M.; Grirrane, Abdessamad; Esquivel, D.; Turner, S.; Poelman, D.; Waroquier, M.; Van Speybroeck, V.; Van Tendeloo, G.; García Gómez, Hermenegildo; Van Der Voort, P. (Royal Society of Chemistry, 2015)

[EN] We present the in situ synthesis of Au nanoparticles within the Zr based Metal Organic Framework, UiO-66. The resulting Au@UiO-66 materials were characterized by means of N-2 sorption, XRPD, UV-Vis, XRF, XPS and TEM ...
Bimetallic CuFe nanoparticles as active and stable catalysts for chemoselective hydrogenation of biomass-derived platform molecules

Arias-Carrascal, Karen Sulay; Liu, Lichen; Garcia-Ortiz, Andrea; Climent Olmedo, María José; Concepción Heydorn, Patricia; Iborra Chornet, Sara; Corma Canós, Avelino (The Royal Society of Chemistry, 2021-05-21)

[EN] Bimetallic CuFe nanoparticles covered by thin carbon layers were developed as a potential substitute for noble metal catalysts and have been used for chemoselective hydrogenation of 5-(hydroxymethyl)furfural (HMF) to ...
Carbonylation of Methanol on Metal Acid Zeolites: Evidence for a Mechanism Involving a Multisite Active Center

Blasco Lanzuela, Teresa; Boronat Zaragoza, Mercedes; Concepción Heydorn, Patricia; Corma Canós, Avelino; Law, David; Vidal Moya, José Alejandro (John Wiley & Sons, 2007)
Catalizadores metálicos subnanométricos altamente eficientes en reacciones de formación de enlaces C-C

Escobar Bedia, Francisco Javier (Universitat Politècnica de València, 2021-09-02)

[ES] De forma general, el trabajo realizado durante la presente tesis doctoral se ha enfocado al diseño y optimización de catalizadores heterogéneos basados en Pd y Ru soportado sobre óxidos metálicos y materiales carbonosos. ...
Catalytic abatement of trichloroethylene over Mo and/or W-based bronzes

Blanch Raga, Neus; Soriano Rodríguez, Mª Dolores; Palomares Gimeno, Antonio Eduardo; Concepción Heydorn, Patricia; Martínez Triguero, Luis Joaquín; López Nieto, José Manuel (Elsevier, 2013-02)

[EN] In this paper we present the results of the synthesis, characterization and catalytic behaviour of Mo(W)¿Nb¿V¿O mixed metal oxides bronzes for the catalytic oxidation of trichloroethylene. The catalysts were prepared ...
Chemical instability of Cu(3)(BTC)(2) by reaction with thiols

Dhakshinamoorthy, Amarajothi; Alvaro Rodríguez, Maria Mercedes; Concepción Heydorn, Patricia; García Gómez, Hermenegildo (Elsevier, 2011-06-10)

In contrast to Fe(BTC) (BTC: 1,3,5-benzenetricarboxylate), the crystal structure of Cu3(BTC)2, a commercial metal organic framework widely used as solid catalyst, collapses when contacted with thiols under mild reaction ...
Chemicals from Biomass: Chemoselective reductive amination of ethyl levulinate with amines

Vidal, Juan D; Climent Olmedo, María José; Concepción Heydorn, Patricia; Corma Canós, Avelino; Iborra Chornet, Sara; Sabater Picot, Mª José (American Chemical Society, 2015-10)

N-substituted-5-methyl-2-piyrrolidones have been obtained by reductive amination of ethyl levulinate with amines in the presence of H-2 as reducing agent under solvent-free conditions. The process involves as a first step ...
Chemicals from Biomass: Selective Synthesis of N-Substituted Furfuryl Amines by the One-Pot Direct Reductive Amination of Furanic Aldehydes

Garcia-Ortiz, Andrea; Vidal, Juan D; Climent Olmedo, María José; Concepción Heydorn, Patricia; Corma Canós, Avelino; Iborra Chornet, Sara (American Chemical Society, 2019-03-18)

[EN] N-substituted furfuryl amines are an important class of compounds due to their pharmaceutical activities that can be produced by reductive amination of furfuraldehydes derived from biomass. With supported Pd nanoparticles ...
Chemoselective Reductive Heterocyclization by Controlling the Binomial Architecture of Metal Particles and Acid-Base Properties of the Support

Martí Montaner, Laura; Sánchez, L.; Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara; Romanelli, G.; Concepción Heydorn, Patricia (American Chemical Society, 2017)

[EN] 2,¿1-¿Benzisoxazoles were produced by reductive heterocyclization of 2-¿nitroacylarenes using supported Pt nanoparticles. The reaction involves a cascade process in which the first step is the redn. of the nitro group ...
Cobalt Catalysts for Alkene Hydrosilylation under Aerobic Conditions without Dry Solvents or Additives

Gutiérrez-Tarriño, Silvia; Concepción Heydorn, Patricia; Oña-Burgos, Pascual (John Wiley & Sons, 2018-12-06)

[EN] Alkene hydrosilylation is typically performed with Pt catalysts, but inexpensive base-metal catalysts would be preferred. Here, we report a simple method for the use of air-stable cobalt catalysts for anti-Markovnikov ...
Combined theoretical and spectroscopic mechanistic studies for improving activity and selectivity in heterogeneous catalysis

Boronat Zaragoza, Mercedes; Concepción Heydorn, Patricia (Elsevier, 2017-05-01)

[EN] By combining theoretical modelling, in situ spectroscopy and kinetic studies it is possible to understand, at the molecular level, the role that the different types of active centres co-existing on real heterogeneous ...
Continuous catalytic process for the selective dehydration of glycerol over Cu-based mixed oxide

Mazarío-Santa-Pau, Jaime; Concepción Heydorn, Patricia; Ventura, María; Domine, Marcelo Eduardo (Elsevier, 2020-05)

[EN] The selective dehydration of glycerol to hydroxyacetone (acetol) was studied with Cu-based mixed oxides derived from hydrotalcite as catalysts in a continuous flow fix-bed reactor. Catalysts were prepared by ...
Controlling the selectivity of bimetallic platinum¿ruthenium nanoparticles supported on N-doped graphene by adjusting their metal composition

Cerezo-Navarrete, Christian; Mathieu, Yannick; Puche Panadero, Marta; Morales, Cristina; Concepción Heydorn, Patricia; Martínez-Prieto, Luis Miguel; Corma Canós, Avelino (The Royal Society of Chemistry, 2021-01-21)

[EN] Mono and bimetallic platinum-ruthenium nanoparticles have been generated on N-doped graphene (NH2-rGO) following an organometallic approach. Surface and structural studies confirmed the formation of bimetallic MNPs ...