Gallego-Sánchez, Eva María; Portilla Ovejero, Mª Teresa; Paris-Carrizo, Cecilia Gertrudis; Leon Escamilla, Efigenio Alejandro; Boronat Zaragoza, Mercedes; Moliner Marin, Manuel; Corma Canós, Avelino(American Association for the Advancement of Science (AAAS), 2017)
[EN] Unlike homogeneous catalysts that are often designed for particular reactions, zeolites are heterogeneous catalysts that are explored and optimized in a heuristic fashion. We present a methodol. for synthesizing ...
[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 ...
[EN] At difference with noble metals, the oxophylic character of non-noble metals strongly facilitates the rupture of the N-O bonds in nitrobenzene, yielding nitrosobenzene as primary reaction intermediate. By combining ...
Corma Canós, Avelino; Boronat Zaragoza, Mercedes; Climent Olmedo, María José; Iborra Chornet, Sara; Montón Molina, Raquel; Sabater Picot, Mª José(Royal Society of Chemistry, 2011)
A series of bifunctional organic catalysts containing acid and basic sites with ionic liquid characteristics have been prepared and their catalytic activity and reaction coordinate for aldol and Knoevenagel condensations ...
Feng, G.; Cheng, P; Yan, W.; Boronat Zaragoza, Mercedes; Li, X; Su, J.; Wang, J.; Li, Y.; Corma Canós, Avelino; Xu, R; Yu, J.(American Association for the Advancement of Science (AAAS), 2016)
[EN] In the hydrothermal crystallization of zeolites from basic media, hydroxide ions (OH-) catalyze the depolymerization of the aluminosilicate gel by breaking the Si, Al-O-Si, Al bonds and catalyze the polymerization of ...
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 ...
Nowadays, the most attractive technology for the elimination of nitric oxides
from the exhaust gas of diesel vehicles is the selective catalytic reduction with ammonia
(NH3-SCR-NOx) using Cu zeolite with the chabazite ...
[EN] The catalysts used in the methanol-to-olefins (MTO) reaction are considered dual systems comprising an inorganic zeolite framework and organic compounds hosted inside that act as cocatalysts. The influence of zeolite ...
[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 ...
Millan Cabrera, Reisel(Universitat Politècnica de València, 2021-02-19)
[ES] En este trabajo estudiamos dos reacciones catalíticas relevantes para la industria y la localización del anión fluoruro en la zeolita RTH, sintetizada en medio fluoruro. El capítulo 3 es el primer capítulo de resultados, ...
Rivero-Crespo, Miguel Ángel; Mon, Marta; Ferrando-Soria, Jesus; Lopes, Christian W.; Boronat Zaragoza, Mercedes; Leyva Perez, Antonio; Corma Canós, Avelino; Hernandez-Garrido, Juan carlos; López-Haro, Miguel; Calvino, Jose J.; Ramos-Fernandez, Enrique V.; Armentano, Donatella; Pardo, Emilio(John Wiley & Sons, 2018-12-21)
[EN] The synthesis and reactivity of single metal atoms in a low-valence state bound to just water, rather than to organic ligands or surfaces, is a major experimental challenge. Herein, we show a gram-scale wet synthesis ...
[EN] Transalkylation of alkylaromatics catalyzed by acid zeolites is a process widely employed in the petrochemical industry for upgrading aromatic fractions. The reaction mechanism is complex as it can proceed either by ...
[EN] By combining kinetics and theoretical calculations, we show here the benefits of going beyond the concept of static localized and defined active sites on solid catalysts, into a system that globally and dynamically ...
Oliver-Tomás, Borja; Gonell-Gómez, Francisco; Pulido, Angeles; Renz, Michael; Boronat Zaragoza, Mercedes(Royal Society of Chemistry, 2016)
[EN] The kinetics of the ketonic decarboxylation of linear and branched carboxylic acids over m-ZrO2 as a catalyst has been investigated. The same apparent activation energy is experimentally determined for the ketonic ...
Saez-Ferre, Sara; Boronat Zaragoza, Mercedes; Cantin Sanz, Angel; Rey Garcia, Fernando; Oña-Burgos, Pascual(American Chemical Society, 2018-07-26)
[EN] A multinuclear NMR has been carried out to elucidate the mechanism of action of CC3-R box-type chiral materials for the separation of enantiomers, supported by theoretical calculations. The potential of these materials ...
Concepción Heydorn, Patricia; Boronat Zaragoza, Mercedes; García García, Saray; Fernández-Villanueva, Estefanía; Corma Canós, Avelino(American Chemical Society, 2017)
[EN] By a combination of theoretical modeling and XPS and SERS spectroscopic studies, it has been found that it is possible to stabilize metallic copper species under oxidizing reaction conditions by adjusting the atomicity ...
Moreno González, Marta; Palomares Gimeno, Antonio Eduardo; Chiesa, Mario; Boronat Zaragoza, Mercedes; Giamello, Elio; Blasco Lanzuela, Teresa(American Chemical Society, 2017)
[EN] The selective catalytic reduction of NOx with hydrocarbons (HC-SCR-NOx) on Cu-zeolites is an alternative for the depletion of NOx present in the exhaust gas of diesel engines. The role played by copper and the general ...
[EN] The catalytic activity of gold depends on particle size, with the reactivity increasing as the particle diameter decreases. However, investigations into behaviour in the subnanometre regime (where gold exists as small ...
Most industrial applications of zeolites as catalysts rely on their Bronsted acidity properties. However, neither quantifying acid strength in solids nor correlating acidity with catalytic activity is straightforward. The ...