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Listar por palabra clave "Heterogeneous catalysts"

Mostrando ítems 1-10 de 10

Bimetallic Oriented (Au/Cu2O) vs. Monometallic 1.1.1 Au (0) or 2.0.0 Cu2O Graphene-Supported Nanoplatelets as Very Efficient Catalysts for Michael and Henry Additions

Simion, Andrada; Candu, Natalia; Coman, Simona M.; Primo Arnau, Ana Maria; Esteve-Adell, Iván; Michelet, Veronique; Parvulescu, Vasile I.; García Gómez, Hermenegildo (John Wiley & Sons, 2018-12-02)

[EN] Michael and Henry addition reactions have been investigated using mono (Au and Cu2O) and bimetallic nanoplatelets (Au/Cu2O) grafted onto few-layers graphene (fl-G) films as heterogeneous catalysts by comparison with ...
Condensation of furanic and oxygenated biomass derivatives for the synthesis of jet-fuel components

Alonso Peñalva, Lydia (Universitat Politècnica de València, 2022-10-27)

[ES] El uso de recursos renovables, especialmente biomasa de tipo lignocelulósico, para la producción de combustibles y productos químicos ha cobrado un gran interés en los últimos años debido a los problemas relacionados ...
First pre-functionalized polymeric aromatic framework from nononitrotetrakis(iodophenyl)methane and its applications

Verde-Sesto, Ester; Pintado-Sierra, Mercedes; Corma Canós, Avelino; Maya, Eva M.; de la Campa, Jose G.; Iglesias, Marta; Sanchez, Felix (Wiley-VCH Verlag, 2014-04-22)

[EN] Starting from mononitrotetrakis(iodophenyl)methane as monomer, we report the preparation of the first pre-functionalised porous aromatic frameworks (PAFs) and their application as supports for organometallic ...
Gold catalysts for the synthesis of aromatic azocompounds from nitroaromatics in one step

Cómbita Merchán, Diego Fernando; Concepción Heydorn, Patricia; Corma Canós, Avelino (Elsevier, 2014-03)

[EN] One-step selective hydrogenation of nitroaromatics to obtain symmetric azocompounds with high yields has been performed with a gold supported on cerium oxide catalysts. Au/TiO2 and Au/CeO2 catalysts direct the ...
Influence of the Framework Topology on the Reactivity of Chiral Pyrrolidine Units Inserted in Different Porous Organosilicas

Llopis-Perez, Sebastian; Velty, Alexandra; DÍAZ MORALES, URBANO MANUEL (MDPI AG, 2019-08)

[EN] Three families of organosiliceous materials with different structuration level, order, and textural properties (non-ordered, M41S, and SBA-15 type materials) were prepared incorporating in their structural framework ...
Inorganic molecular sieves: Preparation, modification and industrial application in catalytic processes

Martínez Sánchez, Mª Cristina; Corma Canós, Avelino (Elsevier, 2011-07)

[EN] The increasing environmental concern and promotion of “green processes” are forcing the substitution of traditional acid and base homogeneous catalysts by solid ones. Among these heterogeneous catalysts, zeolites and ...
Preparación de surfactantes a partir de moléculas plataforma derivadas de la biomasa, en presencia de catalizadores heterogéneos

Stefanini, Laura (Universitat Politècnica de València, 2017-09-05)

Currently, surfactants (also called surface-active agent) are high production volume chemical compounds thanks to their wide range of applications, not only in the detergent industry, but also in other industrial sectors ...
Preparation of Glycerol Carbonate Esters by using Hybrid Nafion-Silica Catalyst

Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara; Martínez Silvestre, Sergio; Velty ., Alexandra (Wiley-VCH Verlag, 2013-07)

Glycerol carbonate esters (GCEs), which are valuable biomass-deriv. compds., have been prepd. through the direct esterification of glycerol carbonate and long org. acids with different chain lengths, in the absence of ...
Synthesis and Stabilization of Subnanometric Gold Oxide Nanoparticles on Multiwalled Carbon Nanotubes and their Catalytic activity

Alves, Leonor; Ballesteros, Belén; Boronat Zaragoza, Mercedes; Cabrero Antonino, Jose Ramón; Concepción Heydorn, Patricia; Corma Canós, Avelino; Correa-Duarte, Miguel Ángel; Mendoza, Ernest (American Chemical Society, 2011-06-02)

Small gold nanoclusters in a very narrow size distribution (1.1 ( 0.5 nm) have been stabilized onto multiwalled carbon nanotubes (MWCNT). Theoretical studies supported by XPS and 16O2 / 18O2 isotopic exchange experiments ...
The First Study on the Reactivity of Water Vapor in Metal-Organic Frameworks with Platinum Nanocrystals

Ogiwara, Naoki; Kobayashi, Hirokazu; Concepción Heydorn, Patricia; Rey Garcia, Fernando; Kitagawa, Hiroshi (John Wiley & Sons, 2019-08-19)

[EN] We first studied the reactivity of H2O vapor in metal-organic frameworks (MOFs) with Pt nanocrystals (NCs) through the water-gas shift (WGS) reaction. A water-stable MOF, UiO-66, serves as a highly effective support ...