Search results for "ESOL"

showing 10 items of 2444 documents

Acylative Dynamic Kinetic Resolution of Secondary Alcohols: Tandem Catalysis by HyperBTM and Bäckvall's Ruthenium Complex.

2021

Non-enzymatic dynamic kinetic resolution (DKR) of secondary alcohols by enantioselective acylation using an isothiourea-derived HyperBTM catalyst and racemization of slowly reacting alcohol by Backvall's ruthenium complex is reported. The DKR approach features high enantioselectivities (up to 99:1), employs easy-to-handle crystalline 4-nitrophenyl isobutyrate as the acylating reagent, and proceeds at room temperature and under an ambient atmosphere. The stereoinduction model featuring cation-π system interactions between the acylated HyperBTM catalyst and π electrons of an alcohol aryl subunit has been elaborated by DFT calculations.

inorganic chemicals010405 organic chemistryArylOrganic ChemistryEnantioselective synthesischemistry.chemical_elementStereoisomerism010402 general chemistry01 natural sciencesCombinatorial chemistryCatalysisRuthenium0104 chemical sciencesRutheniumCatalysisKinetic resolutionAcylationchemistry.chemical_compoundKineticschemistryReagentAlcoholsRacemizationThe Journal of organic chemistry
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Investigation of Activities for Pt-M Bimetallic Nanoparticles Catalysts on the Oxygen Reduction Reaction

2015

Bi-metallic Pt3Ni/C and Pt3Co/C electrocatalysts were successfully synthesized by a solvent free chemical vapour deposition method with a narrow particle size distribution. The results showed that the electrochemical surface area was increased by adding the additional Ni or Co to a pure Pt catalyst. Pt3Ni/C catalyst exhibited a significant enhancement of oxygen reduction reaction activity. The catalysts were characterized by EDS, XRD, HRTEM and electrochemical activity was determined using cyclic voltammetry.

inorganic chemicalsMaterials scienceChemical engineeringNanoparticleChemical vapor depositionCyclic voltammetryCondensed Matter PhysicsElectrocatalystHigh-resolution transmission electron microscopyElectrochemistryBimetallic stripElectronic Optical and Magnetic MaterialsCatalysisFerroelectrics
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Laboratory measurements and astronomical search for the HSO radical

2016

[Context] Despite the fact that many sulfur-bearing molecules, ranging from simple diatomic species up to astronomical complex molecules, have been detected in the interstellar medium, the sulfur chemistry in space is largely unknown and a depletion in the abundance of S-containing species has been observed in the cold, dense interstellar medium. The chemical form of the missing sulfur has yet to be identified.

inorganic chemicalsMethods: laboratory: molecularHydrogenLine: identificationlaboratory: molecular [Methods]chemistry.chemical_elementContext (language use)ISM: moleculeAstrophysics7. Clean energy01 natural sciencesArticleAbundance (ecology)0103 physical sciencesPhysics::Chemical Physicsidentification [Line]Spectral resolutionSubmillimeter: ISM010303 astronomy & astrophysicsAstrophysics::Galaxy Astrophysicsmolecules [ISM]Radio lines: ISMPhysics010304 chemical physicsMolecular dataTriatomic moleculeISM [Submillimeter]AstronomyAstronomy and AstrophysicsAstronomy and AstrophysicSulfurDiatomic moleculeISM: moleculesISM [Radio lines]Interstellar mediumchemistry13. Climate actionSpace and Planetary ScienceAstronomy & Astrophysics
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From Single Molecules to Nanoscopically Structured Materials: Self-Assembly of Metal Chalcogenide/Metal Oxide Nanostructures Based on the Degree of P…

2011

A chemically specific and facile method for the immobilization of metal oxide nanoparticles onto the surface of IF-MoS2 nested fullerenes is reported. The modification strategy is based on the chalcophilic affinity of transition metals such as Fe2+/Fe3+, Fe3+, or Zn2+ as described by the Pearson HSAB concept. The binding capabilities of the 3d metals are dictated by their Pearson hardness. Pearson hard cations such as Fe3+ (Fe2O3) do not bind to the chalcogenide surfaces; borderline metals such as Fe2+ (Fe3O4) or Zn2+ (ZnO) bind reversibly. Pearson-soft metals like Au bind irreversibly. The immobilization of metal oxide nanoparticle colloids was monitored by transmission electron microscopy…

inorganic chemicalslayered compound; metal chalcogenide; metal oxide; nanoparticle; reversible surface functionalizationMaterials scienceChalcogenidenanoparticleGeneral Chemical EngineeringInorganic chemistrylayered compoundOxideNanoparticleGeneral Chemistrymetal oxideMetalchemistry.chemical_compoundTransition metalchemistryTransmission electron microscopyvisual_artreversible surface functionalizationMaterials Chemistryvisual_art.visual_art_mediumHSAB theoryHigh-resolution transmission electron microscopymetal chalcogenideChemistry of Materials
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Ethnicity, 2016/14 : Disputes and Ethnicity

2016

"Ethnicity" – a peer-reviewed journal was established by the Institute of Philosophy and Sociology (University of Latvia). The journal publishes original works about ethnicity in different fields of knowledge – sociology, history, social linguistics, social psychology, law, political science.

inter-ethnic communicationdispute resolutionpopular legal cultureethnicitydispute:HUMANITIES and RELIGION::History and philosophy subjects::Ethnology [Research Subject Categories]
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Circulación de resoluciones judiciales en materia de derecho de familia y en el ámbito de la unión europea (una aproximación al reglamento 2201/2003)

2017

En un contexto como el actual en el que la movilidad de los ciudadanos dentro de la Unión Europea ha ido en progresivo aumento surge la necesidad de regular dicha movilidad y las consecuencias que se derivan de la misma, en particular en familias cuyos miembros tienen diferentes nacionalidades, viven en diferentes Estados miembros o viven en un Estado miembro del que sólo uno de ellos es nacional. Siendo este el objeto de la tesis, en la que veremos cómo dicha movilidad plantea una serie de problemas jurídicos que deben ser regulados de manera coordinada entre los diferentes Estados miembros para ser resueltos, y que dicha resolución, y sus consecuencias, sean aplicables y ejecutivas en tod…

interés del menorreconocimiento y ejecuciónderecho de familiabruselas II bis:CIENCIAS JURÍDICAS Y DERECHO [UNESCO]UNESCO::CIENCIAS JURÍDICAS Y DERECHOtribunalderecho procesalreglamentoespacio europeo de justiciasustracción internacionalcirculación de resolucionesjurisprudenciaresponsabilidad parental
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Eco-friendly cavity-containing iron oxides prepared by mild routes as very efficient catalysts for the total oxidation of VOCs

2018

Iron oxides (FeOx) are non-toxic, non-expensive and environmentally friendly compounds, which makes them good candidates for many industrial applications, among them catalysis. In the present article five catalysts based on FeOx were synthesized by mild routes: hydrothermal in subcritical and supercritical conditions (Fe-HT, Few200, Few450) and solvothermal (Fe-ST1 and Fe-ST2). The catalytic activity of these catalysts was studied for the total oxidation of toluene using very demanding conditions with high space velocities and including water and CO2 in the feed. The samples were characterized by X-ray diffraction (XRD), scanning and high-resolution transmission electron microscopy (SEM and…

iron oxideMaterials scienceTotal oxidationIron oxide02 engineering and technologyMetalurgia010402 general chemistrylcsh:Technology01 natural sciencesMild preparation routesArticleHydrothermal circulationCatalysischemistry.chemical_compoundX-ray photoelectron spectroscopytotal oxidationVolatile organic compounds (VOC)Iron oxideGeneral Materials Sciencelcsh:MicroscopyPorosityHigh-resolution transmission electron microscopylcsh:QC120-168.85lcsh:QH201-278.5lcsh:Tcavities021001 nanoscience & nanotechnologyTolueneQuímica inorgánicavolatile organic compounds (VOC)Supercritical fluid0104 chemical scienceschemistryChemical engineeringlcsh:TA1-2040mild preparation routeslcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringlcsh:Engineering (General). Civil engineering (General)0210 nano-technologylcsh:TK1-9971
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Intervención en Libia: La responsabilidad de proteger a debate

2011

Resumen El trabajo analiza el origen y evolución del concepto de la responsabilidad de proteger, sus antecedentes en la década de los noventa del S. XX, su formulación en el Informe sobre La responsabilidad de proteger,  y su consolidación posterior con especial atención al Documento Final de la Cumbre de 2005. Se examina asimismo el modo en que se ha aplicado esta norma emergente en la Resolución 1973 del Consejo de Seguridad, de 17 de marzo de 2011, que ha autorizado el uso de la fuerza en Libia. Y se concluye que casi todas las limitaciones y objeciones que se están planteando en relación con esta intervención, probablemente son consustanciales al modo en que actualmente se ponen en prác…

ius cogens normsResolución 1973 del Consejo de Seguridadlcsh:Jurisprudence. Philosophy and theory of lawHumanitarian interventionK201-487Intervención humanitariaIntervención humanitaria; autoridad competente; normas de ius cogens; Resolución 1973 del Consejo de Seguridad; responsabilidad de prevenir; Humanitarian intervention; right authority; ius cogens norms; Security Council Resolution 1973; responsibilitynormas de ius cogensright authorityresponsabilidad de prevenirSecurity Council Resolution 1973Jurisprudence. Philosophy and theory of lawresponsibilitylcsh:K201-487autoridad competente
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Ideas, conceptos y dilemas para la implementación de una plataforma nacional de ODR en materia de consumo en Chile desde la perspectiva UE

2019

En la presente tesis hemos desarrollado una extensiva investigación monográfica en busca del concepto de ODR (online dispute resolution), el cual se encuentra en un constante desarrollo en el quehacer jurídico procesal comparado, sobre todo en materia del derecho de consumidor en el espacio de integración de la Unión Europea, con el impulso otorgado a la materia por la directiva 2011/2013 EU y el Reglamento 534/2013 EU,y la consecuente transposición de dichas normas a las tradiciones jurídicas de los Estados miembros. La búsqueda para generar un marco jurídico cada vez más proclive al consumidor dentro del mercado único europeo, ha impulsado el desarrollo de la legislación comunitaria, y la…

justicia digitalADRcomercio electronicoUNESCO::CIENCIAS JURÍDICAS Y DERECHOMercado digitalderecho procesalderecho consumidoronline dispute resolutionODRmulti door sistemadigital justicieUnión EuropeaTPP11Chilederecho comparado
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Otrējo spirtu dinamiskā kinētiskā sadalīšana

2019

Antrinių alkoholių dinaminė kinetinė rezoliucija. Simonas Balkaitis. Darbo vadovas: Dr. chem. Artis Kinēns. Magistrinį darbą sudaro 63 puslapiai, 10 iliustracijų, 31 schema, 14 lentelių, 1 lygtis, 53 literatūros šaltiniai. Darbas parašytas anglų kalba. Pirmiausia buvo ištirta antrinių alkoholių racemizacija įvairių iridžio, rutenio ir geležies katalizatorių pagalba. Tuomet, racemizacijai tinkamiausiuose tirpiklių variantuose buvo tiriama alkoholių kinetinė rezoliucija. Gauti duomenys buvo panaudoti naujos dinaminės kinetinės rezoliucijos procedūros paieškose.

kinetic resolutioniridiumrutheniumracemisationĶīmijaDynamic kinetic resolution
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