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Browsing by Author "Iborra Chornet, Sara"

Now showing items 1-20 of 68

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 ...
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 ...
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 ...
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 procesos enzimáticos y quimio-enzimáticos utilizando catalizadores heterogéneos para la síntesis de productos de Química Fina

Carceller Carceller, José Miguel (Universitat Politècnica de València, 2019-10-28)

[ES] En esta Tesis Doctoral, se han desarrollado varias rutas catalíticas para la obtención de productos químicos de alto valor añadido y de interés para la industria alimentaria, farmacéutica o petroquímica del plástico, ...
Diseño de un proceso para la valorización de ácidos grasos volátiles procedentes de la digestión anaeróbica de biomasa

Segarra Ríos, Jorge (Universitat Politècnica de València, 2018-10-08)

[ES] En la digestión anaeróbica de la biomasa se producen corrientes con una determinada concentración de ácidos carboxílicos de cadena corta, conocidos industrialmente como ácidos grasos volátiles (AGVs), como por ejemplo ...
Estrategias Participativas para el Desarrollo y Evaluación de Competencias Transversales

Monreal Mengual, Llúcia; Atienza Boronat, Mª Julia; Badía Valiente, José David; Bautista, Inmaculada; Climent Olmedo, María José; Gómez Ángel, Brisa; Iborra Chornet, Sara; Labrador Piquer, María Josefa; Morera Bertomeu, Isabel María; Navarro Jover, José Manuel; Olmo Cazevieille, Françoise Therese; Ribes Greus, María Desamparados (Editorial Universitat Politècnica de València, 2015-07-10)

[EN] The need to advance the planning, development and evaluation of skills has led to the Grupo de Innovación e Investigación en Metodologías Activas (GIIMA), to consider a project with the aim of developing a methodology ...
From biomass to chemicals: Synthesis of precursors of biodegradable surfactants from 5-hydroxymethylfurfural

Arias Carrascal, Karen Sulay; S.I. AL-RESAYES; Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara (Wiley-VCH Verlag GmbH&Co. KGaA, 2013-01)

The selective acetalization of 5-hydroxymethylfurfural (HMF) with long chain alkyl alcohols has been performed to obtain precursor of molecules with surfactants properties. If direct acetalization of HMF with n-octanol is ...
Generación fotocatalítica de hidrógeno a partir de mezclas agua/metanol usando como sensibilizador grafenos halogenados

García Baldoví, Hermenegildo (Universitat Politècnica de València, 2014-05-12)

[ES] Se trata de utilizar un Grafeno reconstituido a partir de Oxido de Grafeno mediante la introduccion de halogenos por enlace covalente y asi modular su banda de conduccion y utilizarlo para generar Hidrogeno ...
Gold Catalysis Opens Up a New Route for the Synthesis of Benzimidazoylquinoxaline Derivatives from Biomass Derived Products (Glycerol)

Climent Olmedo, María José; Corma Canós, Avelino; Iborra Chornet, Sara; Martínez Silvestre, Sergio (Wiley-VCH Verlag, 2013-12)

Process intensification by using well-defined solid catalysts able to perform one-pot multistep reactions is one of the open fronts in heterogeneous catalysis. This is even more relevant if new, more efficient synthesis ...
Hacia el desarrollo sostenible: Líquidos Iónicos como catalizadores para la transposición de Beckmann y reacciones de formación de enlaces C-C

Montón Molina, Raquel (Universitat Politècnica de València, 2011-05-09)

La degradación ambiental se ha convertido en un importante problema al que deben enfrentarse la ciencia y la tecnología. Los temas tratados en este trabajo, pretenden aunar, con la introducción de los líquidos iónicos en ...