Listar QICM - Contribuciones a congresos científicos por título
Mostrando ítems 74-93 de 216
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Hydration study of alite-ye’elimite-anhydrite phases associated to BAY cement
Londono-Zuluaga, Diana; Tobón, Jorge Iván; García-Aranda, Miguel Ángel
; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles (2017-10-18)
An alternative to decrease CO2 emissions from OPC production consists on the development of a new kind of eco-cements composed by less calcite demanding phases, such as belite and ye'elimite. That is the case of ... -
Hydration study of Belite-Alite Calcium Sulfoaluminate (BACSA) cement blended with fly ash
Londono-Zuluaga, Diana; Tobón, Jorge Iván; García-Aranda, Miguel Ángel; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles (2015-10-26)
The main objective of this work is to understand the effect of the addition of fly ash (0, 15 and 30 wt%) in the hydration of a BACSA cement paste (water/cement=0.4) prepared with 12 wt% of anhydrite. The pastes were ... -
Hydrogenation of furfural over supported Pd catalysts
Torres Bujalance, Virginia; Cecilia-Buenestado, Juan Antonio; Jiménez-Gómez, Carmen Pilar; García-Sancho, Cristina; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (2018-07-16)
Lignocellulosic biomass is the most abundant and economical non-fossil carbon source. Furthermore, it is not competitive with the food chain, coming from lignocellulosic wastes including agricultural and food processing, ... -
Illitización hidrotermal de esmectita en el sitema (NH4)O-Al2O3-SiO2-H2O: influencia de la presencia de amonio
Lamarca-Irisarri, Daniel; Hernández Laguna, Alfonso; Huertas, F. Javier; Bentabol-Manzanares, María José (2018-07-09)
Durante la diagénesis se producen reacciones que afectan a filosilicatos y a la materia orgánica, ligadas a la generación de hidrocarburos, esto lleva a la fijación de NH4 en las illitas y a la disolución por ácidos ... -
Imidazole-containing Co2+ and Ni2+ etidronates: crystal structures and electrochemical behaviour
Bazaga-García, Montse; Pérez-Colodrero, Rosario Mercedes; Vílchez-Cózar, Álvaro; Armakola, Eirini; Gjika, M.; Visa, Aurelia; Choquesillo-Lazarte, Duane; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio; Demadis, Konstantinos D.[et al.] (2021)
Metal phosphonates-based coordination polymers (CPs) are known to exhibit versatile structural diversity and functionality. Thus, they have been used, among other applications, as electrocatalyst precursors for both, PEMFCs ... -
Implementing Pair Distribution Function analysis to rationalize the water-splitting activity of Co-phosphonate-derived electrocatalysts.
Pérez-Colodrero, Rosario Mercedes; Vílchez-Cózar, Álvaro; Bazaga-García, Montse; Cañamero-Cebrián, Fernando; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio[et al.] (2023)
Pair Distribution Function analysis (PDF) is a total X-ray scattering technique, including the diffuse scattering and the Bragg diffraction. Thus, PDF can be used to characterize structural domains of amorphous solids to ... -
Importancia de la morfología de estructuras de ceria-titania en la fotodegradación de azul de metileno bajo UV y luz solar simulada
Alberoni, Chiara; Barroso-Martín, Isabel; Infantes-Molina, Antonia; Rodríguez-Castellón, Enrique; Storaro, Loreta; Talon, Aldo; Moretti, Elisa[et al.] (2022-02-02)
La contaminación del agua constituye un problema de alcance mundial hoy día cuyos efectos perjudiciales se manifiestan tanto a corto como a largo plazo. De entre todas las fuentes antropogénicas de polución del agua, se ... -
In situ high pressure powder diffraction study of proton conductors based on metal phosphonates
Bazaga-García, Montse; Pérez-Colodrero, Rosario Mercedes; Olivera-Pastor, Pascual; Losilla, Enrique R.; Salcedo, Inés R.; Wright, Paul A.; García-Aranda, Miguel Ángel; Cabeza-Díaz, Aurelio[et al.] (2015-06-30)
Soft Porous Metal Organic frameworks (MOFs) are referred to as a class of coordination polymers that exhibit structural flexibility in response to guest interactions or physical stimuli [1]. By combining softness and ... -
In-situ early age hydration of cement-based materials by synchrotron X-ray powder diffraction
García-Maté, Marta; Álvarez-Pinazo, Gema; León-Reina, Laura; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; García-Aranda, Miguel Ángel; Chou, K. W.; Neuhausen, U.; Petrash, S[et al.] (2015-07-01)
Cement based binders are building materials of worldwide importance. Since these samples are very complex, the knowledge/control of their mineralogical composition are essential to design and predict materials with ... -
In-situ hydration studies of C4AF at early ages in the presence of other phases
Cuesta-García, Ana María; Santacruz-Cruz, María Isabel; Fauth, François; Gómez-de-la-Torre, María de los Ángeles; García-Aranda, Miguel Ángel (2015-06-22)
The ferrite phase, C4AF in cement nomenclature, also called brownmillerite, is the major iron-containing phase in Ordinary Portland Cement (OPC) and in iron rich belite calcium sulfoaluminate cements. The term “ferrite” ... -
In-situ Molibdenum X-ray powder diffraction study of the early hydration of cementitious systems on a humidity chamber
Londono-Zuluaga, Diana; Tobón, Jorge Iván; García-Aranda, Miguel Ángel; León-Reina, Laura; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles[et al.] (2016-07-06)
The durability of cement-based construction materials depends on the environmental conditions during their service life. A further factor is the microstructure of the cement bulk, established by formation of cement hydrates. ... -
In-situ synchrotron powder diffraction study: activation of Portland and Belite cements
Morales-Cantero, Alejandro; Cuesta-García, Ana María; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; García-Aranda, Miguel Ángel (2022-05-31)
Portland cement (PC), whose main phase is alite (Ca3SiO5, C3S), is one of the most manufactured products in the world. However, cement industry is one of the major contributors for greenhouse gases (GHG) emissions. In the ... -
Influence of lanthanum doping on the structure and transport properties of CeO2
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Dos-Santos-Gómez, Lucía; Losilla, Enrique R.; Marrero-López, David (2019-06-10)
LaxCe1-xO2-x/2 materials are oxide and/or proton conductors depending on the La-content and they are of interest for numerous electrochemical applications at high temperatures, including membranes for hydrogen separation ... -
Influence of Nb-doping on the structural and electrical properties of lanthanum molybdates, La5.4MoO11.1
López Vergara, Adrián; Porras-Vázquez, José Manuel; Vollestad, Einar; Canales-Vázquez, J.; Ramírez-Losilla, Enrique; Marrero-López, David[et al.] (2018-06-28)
Nowadays, hydrogen is receiving a great deal of attention as an energy carrier. Commonly, it is obtained by hydrocarbons reforming, such as natural gas, coal and biomass. However, the resulting hydrogen needs to be purified ... -
Influence of presence of ammonium in the hydrothermal illitization of smectite
Bentabol-Manzanares, María José (Alberto López Galindo, 2017)
During diagenesis, several reactions induce changes both in phyllosilicates and organic matter, which in basins associated to the production of hydrocarbons leads to ammonium fixation in illite and micas [1] and to ... -
Influence of synthesis conditions in the catalytic performance of Nb-P catalysts
Cecilia-Buenestado, Juan Antonio; García-Sancho, Cristina; Mérida-Robles, Josefa María; Santamaría-González, José; Maireles-Torres, Pedro Jesús; Jiménez-López, José Antonio; Moreno-Tost, Ramón[et al.] (2014-07-14)
Glycerol is a natural byproduct of the manufacture of soaps from the hydrolysis of animal fats and vegetable oils. Due to the incessant increment of the worldwide production of biodiesel, the production of glycerol, a ... -
Influence of the calcium sulfate source on the rheological behaviour of calcium sulfoaluminate cement pastes
Santacruz-Cruz, María Isabel; García-Maté, Marta; García-Aranda, Miguel Ángel; Gómez-de-la-Torre, María de los Ángeles (2013-09-13)
Calcium sulfoaluminate (CSA) cements are receiving increasing attention since their manufacture produces much less CO2 than ordinary Portland cement (OPC) [1]. In addition, they show interesting properties such as high ... -
In‐Situ Early Age Hydration Characterization of LC3 binders
Gómez-de-la-Torre, María de los Ángeles (2022-09-20)
Ha sido una jornada en la que hemos expuesto los logros más importantes del grupo de la UMA "Cement Science Group" en relación a los cementos de arcillas calcinadas. In this workshop, we have exposed the most important ...