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Listar por autor "Iborra Chornet, Sara"

Mostrando ítems 1-20 de 98

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A reciclable bifuctional acid-base organocatalyst with ionic liquid character. The role of sites separation and spatial configuration on different condensation reaction

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 ...
Bifunctional acid-base ionic liquid for the one-pot synthesis of fine chemicals: thioethers, 2H-chromenes and 2H-quinoline derivatives

Climent Olmedo, María José; Iborra Chornet, Sara; Sabater Picot, Mª José; Vidal Castro, Juan Diego (Elsevier, 2014-07-05)

A bifunctional organocatalyst with ionic liquid properties and with an optimized distance between the acid and basic sites efficiently activates electron deficient olefins for 1,4 conjugated addition, which can be incorporated ...
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 ...
Biomass into chemicals: One-pot two- and three-step synthesis of quinoxalines from biomass-derived glycols and 1,2-dinitrobenzene derivatives using supported gold nanoparticles as catalysts

Climent Olmedo, María José; Corma Canós, Avelino; Hernández, Juan Carlos; Hungría, Ana Belén; Iborra Chornet, Sara; Martínez Silvestre, Sergio (Elsevier, 2012-08)

An efficient and selective one-pot two-step method, for the synthesis of quinoxalines by oxidative coupling of vicinal diols with 1,2-phenylenediamine derivatives, has been developed by using gold nanoparticles supported ...
Biomass-Derived Chemicals: Synthesis of Biodegradable Surfactant Ether Molecules from Hydroxymethylfurfural

Arias Carrascal, Karen Sulay; Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara (Wiley-VCH Verlag, 2014-02)

A new class of biodegradable anionic surfactants with structures based on 5-alkoxymethylfuroate was prepared starting from 5-hydroxymethylfurfural (HMF), through a one-pot-two-steps process which involves the selective ...
Catalizadores heterogéneos para la síntesis de piperazinas a partir de glicerol

Mazarío Santa-Pau, Jaime (Universitat Politècnica de València, 2020-09-02)

[ES] El objetivo principal del trabajo es el estudio de un proceso para la síntesis de productos nitrogenados de alto valor añadido a partir de glicerol empleando catalizadores heterogéneos sostenibles. En concreto, el ...
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 ...
Chemicals from Biomass: Synthesis of biologically active furanochalcones by Claisen-Schmidt condensation of biomass-derived 5-hydroxymethylfurfural (HMF) with acetophenones

Arias Carrascal, Karen Sulay; Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara (Springer Verlag (Germany), 2016-08)

Furanochalcones have been synthesized trough the Claisen-Schmidt condensation of acetophenones and 5-hydroxymethylfurfural (HMF) using different solid base catalysts such as MgO, Al/Mg mixed oxide (HTc) with Lewis basic ...
Chemoenzymatic Synthesis of 5-Hydroxymethylfurfural (HMF) Derived Plasticizers by Coupling HMF Reduction with Enzymatic Esterification

Arias-Carrascal, Karen Sulay; Carceller-Carceller, Jose Miguel; Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara (John Wiley & Sons, 2020-04-07)

[EN] Biobased plasticizers, as substitutes for phthalates, have been synthesized from 5-hydroxymethylfurfural (HMF) and carboxylic acids (or esters) through a chemoenzymatic cascade process that involves as its first ...
Chemoenzymatic synthesis of amino-esters as precursors of ammonium salt-based surfactants from 5-hydroxymethylfurfural (HMF)

Moriana-Herraiz, Carlos; Arias, Karen S.; Climent Olmedo, María José; Iborra Chornet, Sara; Corma Canós, Avelino (The Royal Society of Chemistry, 2024-08-12)

[EN] N-Substituted 5-(hydroxymethyl)-2-furfuryl amines have been obtained through the reductive amination of 5-hydroxymethylfurfural (HMF) with a variety of primary amines using a non-noble metal catalyst based on monodisperse ...
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 ...
Condensación aldólica del canfolenal y la ciclopentanona en presencia de catalizadores básicos heterogéneos

Ginés Ramón, Ferran (Universitat Politècnica de València, 2015-06-16)

[EN] The aim of this work is to synthesize a product of higher value added in the fragrance industries throught a process which involves as first step the aldol condensation between canpholenic aldehyde and cyclopentanone ...
Conversion of biomass platform molecules into fuel additives and liquid hydrocarbon fuels

Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara (Royal Society of Chemistry, 2014-02)

[EN] In this work some relevant processes for the preparation of liquid hydrocarbon fuels and fuel additives from cellulose, hemicellulose and triglycerides derived platform molecules are discussed. Thus, it is shown ...
Converting carbohydrates to bulk chemicals and fine chemicals over heterogeneous catalysts

Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara (Royal Society of Chemistry, 2011)

[EN] In this Critical Review, we discuss how carbohydrates can be transformed into a variety of chemicals through heterogeneous catalysis. We focus particularly on oxidation, reduction and dehydration of hexoses, as well ...
Covalent Immobilization of Naringinase over Two-Dimensional 2D Zeolites and its Applications in a Continuous Process to Produce Citrus Flavonoids and for Debittering of Juices

Carceller-Carceller, Jose Miguel; Martínez Galán, Julián Paul; Monti, Rubens; Bassan, Juliana Cristina; Filice, Marco; Yu, Jihong; Climent Olmedo, María José; Iborra Chornet, Sara; Corma Canós, Avelino (John Wiley & Sons, 2020-09-17)

[EN] The crude naringinase from Penicillium decumbens and a purified naringinase with high a-L-rhamnosidase activity could be covalently immobilized on two-dimensional zeolite ITQ-2 after surface modification with ...
Desarrollo de catalizadores bimetálicos para la valorización de biomasa

Moreno Gutiérrez, Irene (Universitat Politècnica de València, 2022-09-20)

[ES] La situación climática actual requiere de fuentes alternativas al petróleo para la generación de energía y compuestos de alto valor añadido, que permitan una reducción drástica en emisiones de gases de efecto invernadero. ...
Desarrollo de catalizadores tándem basados en Ni/SiO2-Al2O3 y zeolita H-ZSM-5 para la oligomerización de bioetileno a biocombustible de aviación

Norman Ayllón, Eric (Universitat Politècnica de València, 2022-11-24)

[ES] A pesar de que el transporte aéreo supone únicamente el 3% de las emisiones mundiales de gases de efecto invernadero, el principal reto que afronta este sector es la dificultad para su descarbonización y, en consecuencia, ...
Desarrollo de electrocatalizadores basados en clústeres de óxido de cobalto para Pilas de Combustible de Membrana de Intercambio Protónico

Cortés Villena, Alejandro (Universitat Politècnica de València, 2019-01-14)

En este proyecto se han preparado 4 electrocatalizadores basados en clústeres de óxido de cobalto sobre un soporte de carbono para utilizarlos como electrodo catódico en Pilas de Combustible de Membrana de Intercambio ...
Desarrollo de materiales protónicos en estado sólido tipo Thin Film para operar a bajas temperaturas

Mangandi Henríquez, Luis Fernando (Universitat Politècnica de València, 2023-10-31)

[ES] Una manera de almacenamiento seguro, rentable y eficiente de H2 y por consiguiente, de energía, es el uso de moléculas orgánicas que sean capaces de integrar al H2 mediante una hidrogenación catalítica, dando como ...