Listar QICM - Contribuciones a congresos científicos por título
Mostrando ítems 34-53 de 158
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Early hydration study of standard and doped Alite-Belite-Ye’elimite (ABY) cements through Synchrotron Radiation
(2018-07-09)The manufacturing of ye'elimite-rich cements releases from 15 to 37%, depending on their composition, less CO2 to the atmosphere than ordinary Portland cement (OPC). BYF cements containing belite, ye’elimite and ferrite ... -
Efecto sinérgico entre sales inorgánicas y γ-Al2O3 para la deshidratación de xilosa a furfural
(2018-07-04)La biomasa lignocelulósica, con un alto contenido en hemicelulosa, es una de las principales fuentes de pentosas pentosas a partir de las cuales se pueden obtener biocombustibles y productos químicos de alto valor añadido, ... -
Effect of different retarders on the hydration of calcium sulfoaluminate eco-cement pastes
(2014-07-09)The manufacture of Calcium SulfoAluminate (CSA) cements is more environmentally friendly than that of OPC [1] as their production releases up to 40% less CO2 than the latter. The main performances of CSA cements are fast ... -
Effect of preparation conditions on the polymorphism and transport properties of lanthanum molybdates
(2017-10-24)In this work, La6MoO12-based compounds were investigated as part of a new family of materials very competitive as hydrogen separation membranes [1,2]. La5.4MoO11.1 was synthesized by the freeze-drying precursor method and ... -
Effect of the modification of the cationic and anionic framework on the structural and electrical properties of lanthanum molybdates
(2019-07-19)Fluorinated lanthanum molybdates have been prepared at 1500 and 1200 ºC for 1 h and cooled down at 5 ºC min-1. The combination of anionic (F-) and cationic (Nb5+) doping stabilizes the cubic polymorph without needing a ... -
An efficient and sustainable biodiesel production in a mechanochemical pilot reactor under heterogeneous catalysis
(2018-07-17)Fatty acid methyl esters (FAME) produced from vegetable oils or animal fats by transesterification, or from the esterification of fatty acids, with methanol, is labeled as ‘‘Biodiesel”. Current industrial processes for ... -
Electrocatalytic properties of metal hydroxy-phosphonoacetate derivatives for OER, ORR and HER
(2021)Although Pt and Ru/Ir-based noble metal materials are the state-of-the-art electrocatalysts for energy storage and conversion, their applications are still limited by their scarcity and high price. Therefore, the design ... -
Enhanced acidity properties of KIT6_Zr as solid catalyst for the dehydration of sorbitol to isosorbide
(2019-10-03)he modification of mesoporous silicas by incorporating heteroatoms (Zr, Al, Ti, among others) and / or treatment with mineral acids are an attractive strategy in heterogeneous catalysis for the preparation of solid acid ... -
Enseñanza-aprendizaje de contenido académico en inglés: análisis de una innovación/intervención/experiencia en un grado no bilingüe
(2020-10-26)La estrategia nacional de enseñanza superior dictada por la CRUE y la institucional de la Universidad de Málaga (UMA) afronta el reto de ofrecer una enseñanza de calidad en un idioma distinto a la lengua materna, mejorando ... -
Estudio de la deshidratación de sorbitol a isosorbida en presencia de zeolitas ácidas
(2015-07-23)Actualmente, el interés creciente por el uso de la biomasa como materia prima renovable y sostenible para la producción de energía, productos químicos y biocombustibles, está impulsando el desarrollo de nuevos procesos y ... -
Evolución diagenético-metamórfica en el antiforme de Beni Mezala (Rif Septentrional, Marruecos)
(Sociedad Española de Mineralogía, 2019)La determinación de las condiciones de metamorfismo en materiales de grano fino afectados por condiciones de grado bajo implica una serie de dificultades. A pesar de ello, hay criterios cualitativos que permiten llevar a ... -
Flipped Classroom aplicada en el reconocimiento “a visu” de rocas y minerales en la asignatura de Geología
(2022-06)En los últimos años, el sistema educacional tradicional está cambiando a un modelo más activo y colaborativo, empleando nuevas formas de enseñar como la gamificación y/o Flipped Classroom (FC) aplicando para ello metodologías ... -
Furfuryl alcohol production by liquid phase catalytic transfer hydrogenation of furfural on alumina as Lewis acid catalyst
(2017-05-23)Currently, much attention is being paid to the development of efficient and environmentally friendly technologies for the sustainable production of energy, fuels and chemicals [1]. In this context, lignocellulosic biomass ... -
Gas phase selective hydrogenation of furfural to furfuryl alcohol and 2-methylfuran over Cu-CeO2 coprecipitated catalysts
(2015-10-19)Furfural is an important chemical derived from lignocellulosic biomass, in particular from C5 sugars like xylose, and it is considered as a platform molecule of great potential for the synthesis of a broad spectrum of ... -
Green approach to the Isosorbide Conversion into Dimethyl isosorbide
(2017-12-22)Isosorbide is one of the most promising products derived from sorbitol. It has already found many applications, mainly in the polymer industry and medicine, such as isosorbide polycarbonate1 (DURABIO®) and isosorbide ... -
Heterogeneous catalysis for the synthesis of carbon dots (CDs) from biomass source
(2022)It has been evaluated the capacity of several phosphate-based acid catalysts of transition metals such as vanadium and niobium in the synthesis of carbon dots (CDs) via a hydrothermal process. For this purpose, two sources ... -
Hidratación y prestaciones mecánicas de cementos LC3 con arcillas caoliníticas calcinadas españolas
(2022-06)La búsqueda de alternativas que reduzcan esas emisiones es prioritario. Dentro de esas estrategias se encuentra la sustitución parcial de cemento por material cementicio suplementario (SCM, de sus siglas en inglés, ... -
High efficiency cathodes for SOFCs prepared by spray-pyrolysis
(2015-07-10)In recent years, lowering the operating temper-ature of the Solid Oxide Fuel Cells (SOFCs) to the intermediate temperature range (500-700 ºC) has become the main challenge for this technology. The electrolyte resistance ... -
Highly efficient LaCr0.75M0.25O3+δ (M= Ti, Mn, Fe, Co and Cu) nanostructured electrodes for Solid Oxide Fuel Cells
(2019-09-30)Nanostructured composites electrodes based on lanthanum chromites has been prepared using Spray-pyrolysis precursor method achieving better Rp as SOFC electrodes. The performance in real SOFC is still in progress. -
Hydration studies of ye’elimite by using Ptychographic X-ray nano-tomography
(2015-06-26)CSA (Calcium SulfoAluminate) cements may have variable compositions but all of them contain ye’elimite(Ca4Al6O12SO4). The manufacture of CSA cements is more environmentally friendly than that of ordinary Portland cements ...