Listar Química Inorgánica, Cristalografía y Mineralografía - (QICM) por título
Mostrando ítems 222-241 de 456
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M/TiO2 (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation
(2021-05-28)In order to improve the photocatalytic response of TiO2 to UV and visible light for hydrogen photoproduction, low cost M/TiO2 semiconductor catalysts were prepared by the impregnation method of five different first row ... -
Magnetitas utilizadas para la obtención de alcohol furfurílico a partir de furfural mediante transferencia catalítica de hidrógeno
(2018-07-16)El furfural es considerado como una molécula plataforma debido a su alta reactividad en procesos de hidrogenación, oxidación, alquilación o deshidratación, originando una gran variedad de productos de alto valor añadido. ... -
Manufacture of rich-sulfoaluminate belite cement at low temperature from waste mixture by dry and hydrothermal processes
(sciencedirect, 2022)This study, within the framework of eco-cement development, aims to manufacture reactive belite-sulfoaluminate cement (BYF) as alternative to Portland cement (PC). This ecological cement is obtained at low temperature from ... -
Materiales puzolánicos para bajar las emisiones de CO2: soluciones locales para un problema global.
(2023)In recent decades, the cement sector has been looking for solutions to reduce the carbon footprint, being one of the most promising strategies, the replacement of clinker with supplementary cementitious materials, SCMs. ... -
Materials chemistry: design and synthesis of luminescent and biologically active materials
(2018-10-02)The need to synthesise new materials is driven by the need for materials with specific properties. Those properties are determined by the final application. In this talk we will explore the design of materials which are ... -
Materials chemistry: Design, Synthesis and Functionality
(2017-09-28)The need to synthesise new materials is driven by the need for materials with specific functionality, which is in turn driven by the intended final application. In this talk we will explore the design of materials based ... -
Materials Design for N2O Capture: Separation in Gas Mixtures
(IOAP-MDPI, 2022-11-29)The adsorption of greenhouse gases (GHG) as a method to reduce their emissions into the atmosphere is an alternative that is easier to implement industrially and cheaper than other existing technologies, such as chemical ... -
Mechanism of stabilization of dicalcium silicate solid solution with aluminium
(ELSEVIER, 2013-11-11)Stoichiometric dicalcium silicate, Ca2SiO4, displays a well-known polymorphism with temperature. When this phase is doped by a range of elements, belite, one of the main phases of cements, is generated. Here, we thoroughly ... -
Mechanochemistry for a smart and sustainable biodiesel production under heterogeneous catalysis
(2018-09-10)Fatty acid methyl esters (FAME) produced from vegetable oil by transesterification, labeled as ‘‘Biodiesel”, is industrially accomplished in the presence of a homogeneous basic catalyst, such as alkali hydroxide or methoxide ... -
Mesoporous mixed Nb2O5-ZrO2 catalysts for dehydration of glucose into 5-hydroxymethylfurfural
(2016-09-15)Biomass is the world’s most important renewable carbon source, whose major component, carbohydrates, can be valorized by transformation into biofuels and high value-added chemicals. Among the latter, 5-hydroxymethylfurfural ... -
Mesoporous niobium oxide for dehydration of D-xylose into furfural
(2013-09-13)El furfural posee un gran potencial como molécula plataforma de origen renovable para la síntesis de una alta variedad de compuestos químicos. Se obtiene mediante la deshidratación de pentosas, principalmente a partir de ... -
Metal carboxyphosphonates-based electrocatalysts
(2019-10-01)Co1-xFex-HPAA metal phosphonates were prepared and pyrolyzed under N2 and H2/Ar flows. The resulting powders were structural and electrochemically characterized by XRD and CV, respectively. The obtained materials possess ... -
Metal Phosphonate MOFs: Attractive properties for exploitation
(2017-09-28)The field of phosphonate-based MOFs has known a significant renaissance during the last decade. Apart from academic curiosity, such materials are sought for their superior properties, stability (towards high Ts and hydrolysis) ... -
Metal-Doping of La5.4MoO11.1 Proton Conductors: Impact on the Structure and Electrical Properties.
(American Chemical Society, 2018-10-03)La5.4MoO11.1 proton conductors with different metal doping (Ca2+, Sr2+, Ba2+, Ti4+, Zr4+, and Nb5+) have been prepared and structurally and electrically characterized. Different polymorphs are stabilized depending on ... -
Metallic ceramics: a new "Old generation" of catalysts with tunable selectivity
(2017-03-06)One of the key conditions for a successful catalytic process is the catalyst itself. This apparently naïve assertion in fact holds a great implication, such as the possibility to have a fine control on crucial chemical ... -
Microstructural tailoring of nanocomposite electrodes for solid oxide fuel cells
(UMA Editorial, 2023)The high demand for electrical energy induced by the rapid population growth has arisen the necessity to develop sustainable and environmentally friendly energy sources. In this context, fuel cells are one of the ... -
Mix and measure - Combining in situ X-ray powder diffraction and microtomography for accurate hydrating cement studies.
(Elsevier, 2023-11-14)It is reported an innovative methodology based on in situ MoKα1 laboratory X-ray powder diffraction (LXRPD) and microtomography (μCT) avoiding any sample conditioning. The pastes are injected in 2.0 mm capillaries and the ... -
Mixed Ionic-Electronic Conductivity, Redox Behavior and Thermochemical Expansion of Mn-Substituted 5YSZ as an Interlayer Material for Reversible Solid Oxide Cells
(IOAP-MPDI, 2021-01-30)Manganese-substituted 5 mol.% yttria-stabilized zirconia (5YSZ) was explored as a prospective material for protective interlayers between electrolyte and oxygen electrodes in reversible solid oxide fuel/electrolysis cells. ... -
Mixed Oxides Derived from Hydrotalcites Mg/Al Active in the Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol
(IOAP-MDPI, 2022-12-26)Herein, a family of Mg/Al hydrotalcites was synthesized as catalytic precursors of MgAlOx mixed oxides. Both hydrotalcites and mixed oxides were characterized and the mixed oxides were tested in the reduction of furfural ... -
Modelización computacional de la reacción de protólisis de la superficie de filosilicatos
(Macla, 2022)En la interfase mineral/solución de los filosilicatos se producen reacciones de adsorción, disolución y re-precipitación, dando lugar a un cambio de la estructura del sólido y de la solución. Este estudio tiene como ...