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Browsing by UPV Unit "Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química"

Now showing items 1-20 of 1571

"Ab initio" synthesis of zeolites for preestablished catalytic reactions

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 ...
"One-pot" synthesis of 5-(Hydroxymethyl)furfural from carbohydrates using tin-Beta zeolite

Nikolla, Eranda; Román-Leshkov, Yuriy; Moliner Marin, Manuel; Davis, Mark E. (American Chemical Society, 2011)

[EN] Conversion of carbohydrates to 5-(hydroxymethyl)furfural (HMF) may provide a step forward toward achieving a renewable biomass-based chemicals and fuels platform. Recently, we reported that a tin-containing, high-silica ...
(2R,3S,4R)-3,4-Isopropyl-idenedi-oxy-2-(phenyl-sulfonyl-meth-yl) pyrrolidin-1-ol

Flores, M.F.; García García, Pilar; Garrido, N.M.; Sanz, F.; Díez, D. (International Union of Crystallography, 2012)

The title compound, C(14)H(19)NO(5)S, was prepared by nucleophilic addition of the lithium derivative of methyl-phenyl-sulfone to (3S,4R)-3,4-isopropyl-idene-dioxy-pyrroline 1-oxide. There are four mol-ecules in the ...
(3R,4S)-3,4-Isopropylidenedioxy-3,4-dihydro-2H-pyrrole 1-oxide

Flores, M.F.; García García, Pilar; Garrido, N.M.; Sanz, F.; Diez, D. (International Union of Crystallography, 2011)

[EN] The title compound C7H11NO3 was prepared by intramolecular nucleophilic displacement of 2,3-O-iso-propylidene-D-erythronolactol. There are two molecules in the asymmetric unit, which are related by a pseudo-inversion ...
111 oriented gold nanoplatelets on multilayer graphene as visible light photocatalyst for overall water splitting

Mateo Mateo, Diego; Esteve Adell, Iván; Albero Sancho, Josep; Sánchez Royo, Juan Francisco; Primo Arnau, Ana María; García Gómez, Hermenegildo (Nature Publishing Group, 2016-06-06)

[EN] Development of renewable fuels from solar light appears as one of the main current challenges in energy science. A plethora of photocatalysts have been investigated to obtain hydrogen and oxygen from water and solar ...
2D/2D Cu-tetrahydroxyquinone MOF/N-doped graphene heterojunction as photocatalyst for overall water splitting

Szalad, Horatiu; Uscategui-Linares, Andrés Felipe; Albero-Sancho, Josep; García Gómez, Hermenegildo (Elsevier, 2023-03)

[EN] A novel 2D/2D heterojunction (CuTHQ/NG) has been prepared by in situ growth of the 2D CuTHQ MOF on defective N-doped graphene (NG), and its photocatalytic activity for overall water splitting studied in detail. CuTHQ/NG ...
3-Methylpiperidinium ionic liquids

Belhocine, Tayeb; Forsyth, Stewart A.; Gunaratne, H. Q. Nimal; Nieuwenhuyzen, Mark; Nockemann, Peter; Vaca Puga, Alberto; Seddon, Kenneth R.; Srinivasan, Geetha; Whiston, Keith (Royal Society of Chemistry, 2015)

[EN] A wide range of room temperature ionic liquids based on the 3-methylpiperdinium cation core were produced from 3-methylpiperidine, which is a derivative of DYTEKs (R) A amine. First, reaction with 1-bromoalkanes or ...
3D defective graphenes with subnanometric porosity obtained by soft-templating following zeolite procedures

Peng, Lu; Domenech-Carbo, Antonio; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (Royal Society of Chemistry, 2019-12-01)

[EN] By applying the well-known templating mechanism employed for the synthesis of mesoporous silicas to the structuration of sodium alginate, a novel defective 3D tubular graphene material (graphenolite) with hierarchical ...
3D Structured Graphenes as (Photo)Catalysts

García Mulero, Ana (Universitat Politècnica de València, 2023-03-20)

[ES] En la actualidad, el elevado consume energético y el aumento de la concentración de CO2 en la atmósfera han hecho necesaria la búsqueda de nuevas opciones para los procesos actuales. Una respuesta ha sido el aprovechamiento ...
5th International FEZA Conference : abstracts

Blasco Lanzuela, Teresa; Sastre de Andres, Enrique (Editorial Universitat Politècnica de València, 2011-07-12)
A Bifunctional Mechanism for Ethene Dimerization: Catalysis by Rhodium Complexes on Zeolite HY in the Absence of Halides

Serna Merino, Pedro Manuel; Gates, B. C. (Wiley-VCH Verlag, 2011-04-29)

[EN] No ligands needed: Rhodium complexes supported on HY zeolite catalyze the formation of C[BOND]C bonds by a new mechanism involving cooperation between the metal species and Brønsted acid sites of the zeolite support ...
A Bifunctional Metal/Acid Catalyst for One-Pot Multistep Synthesis of Pharmaceuticals

López Prado, Mª Victoria; Sabater Picot, Mª José; Corma Canós, Avelino (Pleiades Publishing, 2020-04)

[EN] One inhibitor of the fatty acid transporter FATP4 was synthesized in a three steps one-pot process in the presence of a bifunctional metal/acid catalyst. This molecule which has potential interest for the treatment ...
A bifunctional palladium-acid solid catalyst performs the direct synthesis of cyclohexylanilines and dicyclohexylamines from nitrobenzenes

Rubio Marqués, Paula; Leyva Perez, Antonio; Corma Canós, Avelino (Royal Society of Chemistry, 2013)

[EN] Nitroderivatives are transformed to cyclohexylanilines at room temperature in good yields and selectivity via a hydrogenation-amine coupling cascade reaction using Pd nanoparticles on carbon as a catalyst and a Bronsted acid.
A Cationic Oligomer as an Organic Template for Direct Synthesis of Aluminosilicate ITH Zeolite

Lei, Chi; Dong, Zhuoya; Martínez, Cristina; Martínez-Triguero, Joaquín; Chen, Wei; Wu, Qinming; Meng, Xiangju; Parvulescu, Andrei-Nicolae; De Baerdemaeker, Trees; Mueller, Ulrich; Zheng, Anmin; Ma, Yanhang; Zhang, Weiping; Yokoi, Toshiyuki; Marler, Bernd; Corma Canós, Avelino (John Wiley & Sons, 2020-09-01)

[EN] There are a large number of zeolites, such as ITH, that cannot be prepared in the aluminosilicate form. Now, the successful synthesis of aluminosilicate ITH zeolite using a simple cationic oligomer as an organic ...
A Combined Experimental and Theoretical Approach to the Photogeneration of 5,6-Dihydropyrimidin-5-yl Radicals in Nonaqueous Media

Aparici-Espert, Maria Isabel; Francés Monerris, Antonio; Rodríguez Muñiz, Gemma María; Roca Sanjuan, Daniel; Lhiaubet, Virginie Lyria; Miranda Alonso, Miguel Ángel (American Chemical Society, 2016-05-20)

The chemical fate of radical intermediates is relevant to understand the biological effects of radiation and to explain formation of DNA lesions. A direct approach to selectively generate the putative reactive intermediates ...
A Comparative Analysis of the Electrophilicity of Organic Molecules between the Computed IPs and EAs and the HOMO and LUMO energies

Domingo, Luis R.; Sáez Cases, José Antonio; Perez, Patricia (Elsevier, 2007-04-20)

[EN] The electrophilicity index, omega, of a series of substituted ethylenes used in some relevant organic reactions has been evaluated from the ionization potential JP) and the electron affinity (EA) computed by vertical ...
A comprehensive mechanistic study on the visible light photocatalytic reductive dehalogenation of haloaromatics mediated by Ru(bpy)3Cl2

Marin Melchor, Mireia; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (The Royal Society of Chemistry, 2017-10-21)

[EN] Visible light photoredox catalysis is emerging as a versatile technique for a great variety of chemical transformations. Specifically,Ru(bpy)(3)(2+) has been widely used as a transition metal-based photocatalyst; ...
A continuous-flow catalytic process with natural hematite-alginate beads for effective water decontamination and disinfection: Peroxymonosulfate activation leading to dominant sulfate radical and minor non-radical pathways

Mohammadi, Samira; Moussavi, Gholamreza; Shekoohiyan, Sakine; Marín García, Mª Luisa; Bosca Mayans, Francisco; Giannakis, Stefanos (Elsevier, 2021-05-01)

[EN] A natural, ferruginous material, Hormuz Red Soil (HRS), was used as a catalyst for decontamination and disinfection via PMS activation. The HRS was fully characterized (morphological, structural, chemical properties) ...
A DFT Study of the [3 + 2] versus [4 + 2] Cycloaddition Reactions of 1,5,6-Trimethylpyrazinium-3-olate with Methyl Methacrylate

Domingo, L.R.; Sáez Cases, José Antonio; Joule, J.A.; Rhyman, L.; Ramasami, P. (American Chemical Society, 2013-02-15)

The reaction between 1,5,6-trimethylpyrazinium-3-olate and methyl methacrylate (MMA) yielding a lactone-lactam has been studied using the DFT method at the B3LYP/6-31G(d) level. It is concluded that formation of the ...
A Heterogeneous Carbon Nitride Nickel Photocatalyst for Efficient Low-Temperature CO2 Methanation

Barrio, Jesus; Mateo-Mateo, Diego; Albero-Sancho, Josep; García Gómez, Hermenegildo; Shalom, Menny (John Wiley & Sons, 2019-11-27)

[EN] The Sabatier reaction, i.e., the hydrogenation of CO2 to methane (CH4) using hydrogen (H-2), constitutes a potentially scalable method to store energy in a product with a high energy density. However, up to today, ...