Listar QICM - Contribuciones a congresos científicos por título
Mostrando ítems 136-155 de 209
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Proton conductivity of lanthanide nitrilotris-methylphosphonates
(2017-07-10)Multifunctional metal phosphonates are acidic coordination polymers (CPs) with remarkable stability and proton conducting properties owing to their structure is usually composed of extended hydrogen-bond networks that favor ... -
Proton conductivity of multifunctional metal phosphonate frameworks
(2015-03-23)Metal phosphonates exhibit attractive characteristics for proton conductivity, such as tunable functionality, chemical and thermal stability and the existence of H-bond networks with acidic protons within their structure.1 In ... -
Proton conductivity properties of novel tin(II) phosphonates
(2024-01-16)Metal phosphonates (MPs), a subclass of coordination polymers, may exhibit acidic groups such as P-OH, SO3H, COOH, N+-H, etc. Combining these features with interesting metals make them highly appealing in the field of fuel ... -
Proton Conductors based on Metal Phosphonate Hybrid Materials for PEM Fuel Cells
(2014-06-25)The necessity of energy and power generation is constantly growing. Fossils fuels are quickly becoming unsatisfactory substrates due to both their emission of pollutants and their finite expectancy. Fuel cells are one of ... -
El proyecto GLOSARIO-SEA. Traducción y adapatación del glosario de la Clay Minerals Society (CMS)
(Macla, 2022)El proyecto de realización de un glosario relacionado con las arcillas se planteó como objetivo de la Sociedad Española de Arcillas (SEA) durante su reunión en Madrid en 2016. Para el proyecto se propuso como coordinador ... -
Pt-Fe2O3 based catalysts for anisole hydrodeoxygenation
(2021)The depletion of fossil fuels along with massive emissions of greenhouse gases (GHG) emissions are serious issues facing society nowadays. Considering that almost a quarter of fossil fuel consumption is associated with the ... -
Ptychographic X-ray computed tomography analysis of cement pastes
(2019-10-04)Ptychographic X-ray computed tomography provides 3D electron mass density and attenuationcoefficient distributions of unaltered cement pastes with an isotropic resolution below 100 nm. Thisimaging technique allows ... -
PXRD and PDF analysis of multifunctional lanthanide nitrilotris-methylphosphonate-based proton conductors
(2017-10-17)Metal phosphonates are multifunctional solids which possess tunable properties, such as H-bond networks, while exhibiting high chemical and thermal stability. Depending on the protonation of the ligand, different crystalline ... -
Quantitative phase Analisis: A comparative study of Mo and Cu strictly monochromatic radiations
(2016-06-27)A comparison of the Rietveld quantitative phase analyses (RQPA) obtained using Cu-Kα1, Mo-Kα1, and synchrotron strictly monochromatic radiations is presented. The main aim is to test a simple hypothesis: high energy ... -
Role of Mo in catalysts based on noble metals in hydrodeoxygenation reactions
(2017-06-29)The use of bio-energy as a renewable alternative to fossil fuels is nowadays attracting more and more attention. The bio-fuel from biomass seems to be a potential energy substitute for fossil fuels since it is a renewable ... -
The role of raw powder diffraction data in peer review; past, present and future
(2019-09-05)Scientific data in our community can be classified, in broad terms, in three large categories: raw, reduced and derived data. IUCr has been very active in promoting the sharing of reduced and derived data for decades in ... -
Ru supported on Mg/Al hydrotalcites for phenol hydrogenation.
(2023)Cyclohexanone and cyclohexanol are high value-added products widely used in polymer and chemical industry as organic solvents in oil paints or varnishes [1] or as intermediates in nylon, oxalic acid, caprolactam and adipic ... -
Si-Al nanospheres for the valorization of galactose and agarose into 5-hydroxymethylfurfural.
(2023)5-hydroxymethylfurfural (HMF) is a compound that has gained attention to potentially substitute fossil resources in areas such as the polymer industry or the production of energy vectors. HMF is produced from the acid ... -
Sílices mesoporosas KIT-6 funcionalizadas como catalizadores ácidos para la deshidratación de sorbitol a isosorbida
(2019-06-28)La modificación de sílices mesoporosas mediante la incorporación de heteroátomos (Zr, Al, Ti, entre otros) y/o tratamiento con ácidos minerales es una estrategia atractiva en catálisis heterogénea para la preparación de ... -
Single and solid solutions metal carboxyphosphonates as precursors for phosphorous-containing electrocatalysts
(2019-07-19)Co1-xFex-HPAA metal phosphonates were prepared and pyrolyzed under N2 and H2/Ar flows. The result-ing powders were structural and electrochemically characterised by XRD and CV, respectively. The ob-tained materials possess ... -
Síntesis hidrotermal de tobelita rica en Mg
(2018-07-10)La tobelita ha sido descrita en ambientes de baja temperatura y sintetizada a diferentes temperaturas. Además de tobelita se han sintetizado los términos intermedios entre tobelita y moscovita, a partir de caolinita. En ... -
Sm0.5Sr0.5CoO3-δ - Ce0.9Sm0.1O1.95 nanocomposites for reversible electrochemical cells.
(2023)The generation of electricity through environmentally friendly sources of energy has been one of the main challenges of our society in the last decades. Nevertheless, the irregular and seasonal disposition of renewable ... -
Solid Oxide Fuel Cells based on Lanthanum Tungstates Electrolytes
(2015-07-13)Lanthanum tungstate with composition La27W4NbO55- (LWNO) has been tested as proton conductor electrolyte for Solid Oxide Fuel Cells (SOFCs). For this purpose, different electrodes and composite electrodes are considered, ... -
Solución sólida en micas sintetizadas hidrotermlamente a partir de caolinita a 400ºC
(2019-06-28)La transformación de caolinita en mica dioctaédrica ha sido descrita y sintetizada en diferentes condiciones de temperatura, pH y ambientes químicos (Chermark y Rimstidt, 1990; Huang, 1993; Bauer et al., 1998; Bentabol ... -
Stability of epitaxial heterostructured materials
(2019)Heterostructured materials are a new family of artificial compounds where the electronic and ionic properties can be modulated by varying the characteristics of the different material layers. These properties arise from ...