Listar QICM - Contribuciones a congresos científicos por título
Mostrando ítems 188-207 de 216
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The effect of mechanochemistry on the preparation of heterogeneous catalysts: Reduction of furfural to obtain furfuryl alcohol.
Pérez-Merchán, Antonio Manuel; Scala, Marcela; Cecilia-Buenestado, Juan Antonio
; García-Sancho, Cristina; Malpartida-García, Irene; Mérida-Robles, Josefa María; Moreno-Tost, Ramón; Dimitratos, Nikolaos; Maireles-Torres, Pedro Jesús[et al.] (2023)
In this context, mechanochemistry is receiving increasing attention for the synthesis of many chemical compounds in the solid state, considered by IUPAC as one of the 10 methodologies to change the world.Mechanochemistry ... -
The use of mo and cu monochromatic radiations for quantitative phase analysis: study of the accuracy
Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura; Cuesta-García, Ana María; García-Maté, Marta; Álvarez-Pinazo, Gema; Santacruz-Cruz, María Isabel; Vallcorba, Oriol; García-Aranda, Miguel Ángel[et al.] (2016-06-27)
Cement hydration is a very complex process in which crystalline phases are dissolving in water and after supersaturation hydrated crystalline and amorphous phases precipitate. Great efforts are being made to develop ... -
Time-dependent monitoring of cement hydration by combined laboratory x-ray microtomography and powder diffraction
Redondo-Soto, Cinthya; Cuesta-García, Ana María; Salcedo, Inés R.; León-Reina, Laura; García-Aranda, Miguel Ángel (2022-06-30)
Following the reaction degree of amorphous phases in cements is very challenging. It becomes even harder when some additions (supplementary cementitious materials) are employed. Nowadays, calcined clays are attracting a ... -
Transformaciones microtexturales de esmectita a illita, en presencia de amonio
Durante la diagénesis se producen reacciones que afectan a los filosilicatos y a la materia orgánica, que lleva a la fijación de NH4 en las illitas (Ill) y en las micas. Además, las esmectitas (Sm) sufren reorganizaciones ... -
Transition metal hydroxyphosphonoacetates as precursors of electrocatalysts
Vílchez-Cózar, Álvaro; Pérez-Colodrero, Rosario Mercedes; Bazaga-García, Montse; Salcedo, Inés R.; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio; López Vergara, Adrián[et al.] (2021-01-29)
Coordination polymers (PCs) are widely studied due to their applicability in many fields. Among them, metal phosphonates are attractive materials due to their great structural and functional diversity, as proton conductors ... -
Tunable crystal structure and proton conductivity of lanthanide nitrilotrismethylphosphonates
Salcedo, Inés R.; Pérez-Colodrero, Rosario Mercedes; Hix, Gary B.; Cabeza-Díaz, Aurelio; Bazaga-García, Montse; Ramírez-Losilla, Enrique; Olivera-Pastor, Pascual[et al.] (2018-10-01)
Metal phosphonates are multifunctional solids with remarkable stability and proton conducting properties owing to their structure is usually composed of extended hydrogen-bond networks that favor proton transfer pathways ... -
Tunable electrode architectures for La0.8Sr0.2Fe1-xTixO3-δ based Symmetrical Solid Oxide Fuel Cells.
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Losilla, Enrique R.; Marrero-López, David (2021-07-18)
The efficiency of SOCF electrodes can be improved by optimizing the microstructure from alternative preparation methods, such as infiltration and nanostructured electrodes deposited at low temperature. ... -
Tuning Proton Conductivity in A Multifunctional Calcium Phosphonate Hybrid Framework
Cabeza-Díaz, Aurelio; Bazaga-García, Montse; Pérez-Colodrero, Rosario Mercedes; Papadaki, M.; Olivera-Pastor, Pascual; Losilla, Enrique R.; León-Reina, Laura; Choquesillo-Lazarte, Duane; Garczarek, Piotr; Zon, Jerzy; García-Aranda, Miguel Ángel; Demadis, Konstantinos D.[et al.] (2014-06-25)
Multi-chelating phosphonate ligands are organic linkers alternative to polycarboxylates and other ligands providing synthetic access to a number of thermally- and chemically-stable MOFs [1]. Metal phosphonates are amenable ... -
Tuning Proton Conductivity Properties of Lanthanide Amino-Sulfophosphonates-Loaded Nafion Composite Membranes
Bazaga-García, Montse; Salcedo, Inés R.; Pérez-Colodrero, Rosario Mercedes; Villemin, Didier; Cabeza-Díaz, Aurelio; Olivera-Pastor, Pascual; Losilla, Enrique R.; Del Río, Carmen; López González, María del Mar[et al.] (2017-07-05)
Polymer-based electrolytes in proton exchange membrane fuel cells (PEMFCs) utilize acidic groups as proton carriers and hydrogen bonding networks as proton-conducting pathways to facilitate proton transport. Crystalline ... -
Tuning the activity of cobalt 2-hydroxyphosphonoacetates-derived electrocatalyst for water splitting and oxygen reduction: insights into the local order by pair distribution funcion analysis
Vílchez-Cózar, Álvaro; Pérez-Colodrero, Rosario Mercedes; Bazaga-García, Montse; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio (2024-01-16)
Electrode materials generally exhibit complex heterostructures wherein both amorphous and crystalline phases may coexist [1]. Advanced techniques, such as Pair Distribution Function (PDF) analysis, may offer valuable ... -
Using transition metal tetraphosphonates as precursor of phosphorus-containing electrocatalysts
Sánchez Caballero, Abraham; Vílchez-Cózar, Álvaro; Bazaga-García, Montse; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio; Pérez-Colodrero, Rosario Mercedes[et al.] (2022-11)
Coordination polymers (CPs) are widely studied due to their applicability in many fields. Among them, metal phosphonates (MPs) are attractive materials due to their versatile structural diversity and functionality, with ... -
Uso conjunto de difracción de rayos X de polvo y microtomografía de laboratorio en la hidratación del cemento Portland.
Fernández-Sánchez, Jaime; Cuesta-García, Ana María; Shirani, Shiva; Redondo-Soto, Cinthya; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; León-Reina, Laura; Salcedo, Inés R.; García-Aranda, Miguel Ángel[et al.] (2024)
Para estudiar la hidratación de los cementos de manera precisa y robusta, estamos desarrollando un enfoque innovador basado en medidas in situ de pastas, evitando así cualquier alteración de las mismas. Utilizamos la ... -
Valorisation of glucose into biofuels and high value-added chemicals using zeolites as catalysts.
Torres-Olea, Benjamín; Pérez-Merchán, Antonio Manuel; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (2023)
Hexose sugars can be valorised under acidic conditions to produce the platform chemical 5-hydroxymethylfurfural (HMF), which can be transformed in a broad spectrum of chemicals with applications as biofuels or monomers for ... -
Valorisation of glycerol by new mechanochemical processes
Malpartida-García, Irene; Maireles-Torres, Pedro Jesús; Lair, Valentin; Halloumi, Samy; Thiel, Julien; Lacoste, François[et al.] (2019-05-22)
The search for new applications of glycerol, as a chemical platform from which a broad spectrum of new valuable derivatives can be obtained, is ongoing. In the present communication, a new mechano-chemical reactor is used ... -
Valorización de furfural en reacción one-pot utilizando Al- y Zr-PILCs como catalizadores
Es Sih, Salima; Cecilia-Buenestado, Juan Antonio; Jiménez-Gómez, Carmen Pilar; García-Sancho, Cristina; Franco-Duro, Francisco Ignacio; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (2023)
El agotamiento de los combustibles fósiles ha dado lugar a la búsqueda y desarrollo de nuevas fuentes de energía y productos químicos. En este sentido, la biomasa lignocelulósica ha surgido como interesante alternativa ... -
Valorización de furfural hacia productos de alto valor añadido con arcillas pilareadas con ZrO2 o Al2O3.
Es Sih, Salima; Cecilia-Buenestado, Juan Antonio; García-Sancho, Cristina; Franco-Duro, Francisco Ignacio; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (2023)
El agotamiento de los combustibles fósiles ha dado lugar a la búsqueda y desarrollo de nuevas fuentes de energía y productos químicos. De las potenciales fuentes, la biomasa lignocelulósica se ha perfilado como una alternativa ... -
Valorización de huesos de aceituna para la obtención de furfural en presencia de gamma- Al2O3 y CaCl2
Fúnez Núñez, Inmaculada; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Serrano Cantador, Luis; Maireles-Torres, Pedro Jesús[et al.] (2019-07-02)
En la actualidad, se considera que la biomasa lignocelulósica es una materia prima sostenible muy prometedora, ya que es la única fuente de carbono renovable que no compite con la cadena alimentaria. A partir de ella puede ... -
Valorización de la borra del café: producción de biodiesel y 5-hidroximetilfurfural/furfural
Pérez-Merchán, Antonio Manuel; Malpartida-García, Irene; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús (2022)
VALORIZACIÓN DE LA BORRA DEL CAFÉ: PRODUCCIÓN DE BIODIESEL Y 5-HIDROXIMETILFURFURAL/FURFURAL -
Valorization of carbohydrates: dehydration of sorbitol to isosorbide in the presence of acidic zeolites
Santamaría-González, José; Lerena Gil, Isabel; Ginés-Molina, María José; Mérida-Robles, Josefa María; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (2015-10-16)
Currently, the growing interest in the use of biomass as a renewable and sustainable raw material for the production of energy, chemicals and biofuels is driving the development of new catalytic processes and technologies ... -
Valorization of olive stones to obtain furfural in the presence of gamma-Al2O3 and CaCl2
Fúnez Núñez, Inmaculada; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Serrano Cantador, Luis; Maireles-Torres, Pedro Jesús[et al.] (2019-10-03)
Furfural is considered as one of the 12 platform molecules derived from biomass for the synthesis of high value-added chemicals. It is mainly produced by acid-catalyzed dehydration ofpentoses, such as xylose, which can be ...