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Listar por autor "Puga Vaca, Alberto"

Mostrando ítems 1-20 de 20

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 ...
Complete Photocatalytic Reduction of CO2 to Methane by H2 under Solar Light Irradiation

Sastre Calabuig, Francesc; Puga, Alberto V.; Liu, Lichen; Corma Canós, Avelino; García Gómez, Hermenegildo (American Chemical Society, 2014-05-14)

Nickel supported on silica-alumina is an efficient and reusable photocatalyst for the reduction of CO2 to methane by H-2, reaching selectivity above 95% at CO2 conversion over 90%. Although NiO behaves similarly, it undergoes ...
Conference report: Lake Constance turns green

Adamova, G.; Ferguson, J.L.; Ng, S.; Puga Vaca, Alberto; Rodriguez, H.; Rountree, S.M.; Seddon, K.R.; Tomaszowska, A.A. (Royal Society of Chemistry, 2009)
Copper-doped titania photocatalysts for simultaneous reduction of CO2 and production of H-2 from aqueous sulfide

Gonell-Gómez, Francisco; Puga Vaca, Alberto; Julián López, Beatriz; García Gómez, Hermenegildo; Corma Canós, Avelino (Elsevier, 2016-01)

Copper-doped titanium dioxide materials with anatase phase (Cu-TiO2, atomic Cu contents ranging from 0 to 3% relative to the sum of Cu and Ti), and particle sizes of 12-15 nm, were synthesised by a solvo-thermal method ...
Determination of the Evolution of Heterogeneous Single Metal Atoms and Nanoclusters under Reaction Conditions: Which Are the Working Catalytic Sites?

Liu, Lichen; MEIRA, DEBORA M.; Arenal, Raul; Concepción Heydorn, Patricia; Puga, Alberto V.; Corma Canós, Avelino (American Chemical Society, 2019-12-06)

[EN] Identification of active sites in heterogeneous metal catalysts is critical for understanding the reaction mechanism at the molecular level and for designing more efficient catalysts. Because of their structural ...
Direct Conversion of Cellulose into Alkyl Glycoside Surfactants

Puga, Alberto V.; Corma Canós, Avelino (John Wiley & Sons, 2017)

[EN] The one-step production of biodegradable alkyl glycoside (1-dodecyl mono- and oligoglucoside) surfactants from cellulose has been achieved by direct alcoholysis in fatty alcohol media under BrOnsted acid catalysis at ...
Dual functional ionic liquids as antimicrobials and plasticisers for medical grade PVCs

Choi, Seong Ying; Rodriguez, Hector; Gunaratne, H. Q. Nimal; Vaca Puga, Alberto; Gilpin, Deirdre; McGrath, Stephanie; Vyle, Joseph S.; Tunney, Michael M.; Rogers, Robin D.; McNally, Tony (Royal Society of Chemistry, 2014)

[EN] Two ionic liquids, 1-ethylpyridinium docusate (IL1) and tri-n-butyl(2-hydroxyethyl)phosphonium docusate (IL2), were designed and synthesized with the explicit intention of imparting a combination of plasticization and ...
Dual Xanthan Gum/Poly(vinyl acetate) or Alkyl-Functionalized Poly(vinyl alcohol) Films as Models for Advanced Coatings

Vaca Puga, Alberto; Garcia-Valls, Ricard; Fernandez-Prieto, Susana; Smets, Johan; York, David (Wiley, 2014-10-05)

[EN] Double-layer films, prepared by casting films of xanthan gum (XG), and subsequently poly(vinyl acetate) (PVAc) onto the former, are reported. The resulting XG/PVAc films provide high protection as coatings to a bleaching ...
Efficient production and separation of biodegradable surfactants from cellulose in 1-butyl-3-methylimidazolium chloride

Puga, Alberto V.; Corma Canós, Avelino (Wiley-VCH Verlag, 2014-12)

[EN] Alkyl glycoside biodegradable surfactants were produced from cellulose and 1-octanol or 1-dodecanol in a one-pot, two-step (hydrolysis-glycosidation) process in 1-butyl-3-methylimidazolium chloride. Both surfactant ...
Estudio de fotocatalizadores M/TiO2 (M=Au, Ag, Cu, Pt) para la producción de H2 por fotorreformado de ácido acético bajo irradiación con luz solar simulada

Imizcoz Aramburu, Mikel (Universitat Politècnica de València, 2018-10-23)

Introducción: En la reacción de fotorreformado de ácido acético los principales retos que se han encontrado hasta la fecha son los bajos rendimientos de producción de H2 y la baja selectividad frente a la generación de ...
From Mono- to Poly-Substituted Frameworks: A Way of Tuning the Acidic Character of C-c-H in o-Carborane Derivatives

Puga, Alberto V.; Teixidor, Francesc; Sillanpaa, Reijo; Kivekas, Raikko; Arca, Massimiliano; Barbera, Gemma; Viñas, Clara (Wiley, 2009)

[EN] The incorporation of iodine atoms onto the boron vertices of the o-carborane framework causes, according to spectroscopic data, a uniform increase in the acidic character of the C-c-H (C-c= cluster carbon) vertices, ...
Hydrogenation of CO2 on Nickel-Iron Nanoparticles Under Sunlight Irradiation

Puga, Alberto V.; Corma Canós, Avelino (Springer-Verlag, 2018)

[EN] Nickel-iron oxide nanoparticles were prepared by a simple mixed oxalate precursor decomposition method and used as catalysts for the sunlight-promoted CO2 hydrogenation reaction. The composition of the NiyFe1-yOx ...
Iodinated ortho-Carboranes as Versatile Building Blocks to Design Intermolecular Interactions in Crystal Lattices

Puga, Alberto V.; Teixidor, Francesc; Sillanpaa, Reijo; Kivekas, Raikko; Viñas, Clara (Wiley, 2009)

[EN] The crystal structures of numerous iodinated ortho-carboranes have been studied, which has revealed the diversity of intermolecular interactions that these substances can adopt in the solid state. The nature-mostly ...
Light-Promoted Hydrogenation of Carbon Dioxide¿An Overview

Puga Vaca, Alberto (Springer Verlag (Germany), 2016-09)

[EN] Hydrogenation of carbon dioxide is considered as a viable strategy to generate fuels while closing the carbon cycle (heavily disrupted by the abuse in the exploitation of fossil resources) and reducing greenhouse gas ...
Líquidos iónicos como electrolitos estables para baterías de litio y otros dispositivos de almacenamiento de energía

Puga, Alberto V. (Real Sociedad Española de Química (RSEQ), 2012-10)

[ES] Los líquidos iónicos son alternativas razonables a los electrolitos utilizados en dispositivos de almacenamiento de energía, como las baterías de litio, pues ofrecen importantes ventajas en materia de seguridad. Esto ...
Modeling the Vapor Liquid Equilibria of Ionic Liquids Containing Perfume Raw Materials

Cetti, Jonathan; Eike, David; Ferrero Vallana, Federico M.; Gunaratne, H. Q. Nimal; Holland, Lynette A.M.; Puga, Alberto V.; Seddon, Kenneth R.; Todini, Oreste (American Chemical Society, 2017)

[EN] In this work, the vapor liquid equilibria of binary and multinary systems comprise perfume raw materials and ionic liquids have been computed using two different models: COSMO-RS, a solvation model, and UNIFAC, a group ...
Photocatalytic production of hydrogen from biomass-derived feedstocks

Puga, Alberto V. (Elsevier, 2016)

[EN] The application of photocatalysis for the utilisation of sunlight energy is intensely investigated in present times, particularly in prospect of generating solar fuels by hydrogen production or CO2 reduction processes ...
Production of H2 by Ethanol Photoreforming on Au/TiO2

Vaca Puga, Alberto; Forneli Rubio, Mª Amparo; García Gómez, Hermenegildo; Corma Canós, Avelino (Wiley, 2014-01-15)

A deposition-precipitation method is used to prepare Au/TiO 2 solids (0.45–1.7 wt% Au). These materials, consisting of gold nanoparticles (diameter range = 1.5–6.5 nm) supported on the surface of TiO 2 , are used ...
Sunlight-assisted hydrogenation of CO2 into ethanol and C2+ hydrocarbons by sodium-promoted Co@C nanocomposites

Liu, Lichen; Puga, Alberto V.; Cored-Bandrés, Jorge; Concepción Heydorn, Patricia; Pérez-Dieste, Virginia; García Gómez, Hermenegildo; Corma Canós, Avelino (Elsevier, 2018-11-05)

[EN] The hydrogenation of CO2 into hydrocarbons promoted by the action of sunlight has been studied on Co nanoparticles covered by thin carbon layers. In particular, nearly 100% selectivity to hydrocarbons is obtained with ...
Synthesis of quadruped-shaped polyfunctionalized o-carborane synthons

Puga, Alberto V.; Teixidor, Francesc; Sillanpaa, Reijo; Kivekas, Raikko; Viñas, Clara (Royal Society of Chemistry, 2011)

[EN] o-Carborane derivatives with precisely defined patterns of substitution have been prepared from 8,9,10,12-I-4-1,2-closo-C2B10H8 by replacing the iodine atoms, bonded to four adjacent boron vertices in the cluster, ...