Listar QICM - Contribuciones a congresos científicos por título
Mostrando ítems 167-186 de 216
-
Study of mixed Pr/La molybdates, La5.4-xPrxMo1-yNbyO12-δ, for hydrogen separation membranes.
Sánchez Caballero, Abraham; Porras-Vázquez, José Manuel
; Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Infantes-Molina, Antonia; Marrero-López, David; Ramírez-Losilla, Enrique[et al.] (2023)
Lanthanide molybdates, with general formula Ln5.4MoO11.1-, are materials with mixed proton-ionic conductivity that can be used as hydrogen separation membranes. Their symmetry (cubic or rhombohedral) depends on the synthetic ... -
Sulphated KIT6-Zr as an efficient solid acid catalyst for the production of isosorbide from sorbitol
In recent years, the development of new catalytic processes for the transformation of sugars is converting lignocellulosic biomass in a sustainable and renewable feedstock for the production of biofuels and high value-added ... -
Supported nickel nitride catalysts for the gas-phase hydrogenation of furfural
Jiménez-Gómez, Carmen Pilar; Cecilia-Buenestado, Juan Antonio; Defilippi, Chiara; Maireles-Torres, Pedro Jesús; Giordano, Cristina (2019-05-21)
A series of catalysts with different nickel loading (2.5-30 wt%) has been prepared by UGR. The preparation of Ni3N phase was ascertained via Powder X-rays diffraction together with cubic nickel . The elemental chemical ... -
Synchrotron pair distribution function approach applied to cement samples
Cuesta-García, Ana María; Zea-Garcia, Jesus D.; Gómez-de-la-Torre, María de los Ángeles; García-Aranda, Miguel Ángel (2019-10-14)
The characterization of the nanocrystalline/amorphous materials is very challenging but the presence of these materials mixed with large amounts of crystalline phases makes the analysis even more complicated. This is the ... -
Synchrotron X-ray pair distribution function analysis of calcium silicate pastes
Cuesta-García, Ana María; Gómez-de-la-Torre, María de los Ángeles; García-Aranda, Miguel Ángel (2021)
The analysis of nanocrystalline and amorphous phases in cement matrices which contain high amounts of crystalline phases is a very challenging task. In this respect, pair distribution function (PDF) methodology in ... -
Synchrotron X-ray pair distribution function analysis of tricalcium silicate pastes
Cuesta-García, Ana María; Zea-Garcia, Jesus D.; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; García-Aranda, Miguel Ángel (2019-09-24)
The analysis of nanocrystalline and amorphous components within cement pastes that contain high amounts of crystalline phases is very challenging. Synchrotron powder diffraction jointly with the pair distribution function ... -
Synchrotron x-ray pair distribution function: A tool to characterize cement gels
Cuesta-García, Ana María; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; García-Aranda, Miguel Ángel[et al.] (2018-07-06)
Cement matrices contain large amounts of crystalline phases jointly with amorphous and/or nanocrystalline phases. Consequently, their analyses are very challenging. Synchrotron powder diffraction in combination with the ... -
Synergic effect between inorganic salts and gamma-Al2O3 for xylose dehydration to furfural
Fúnez Núñez, Inmaculada; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Serrano Cantador, Luis; Maireles-Torres, Pedro Jesús[et al.] (2018-07-17)
Lignocellulosic biomass, with a high content of hemicellulose, is the main source of pentoses, from which biofuels and value-added chemicals can be produced. Amongst the latter, 2-Furfuraldehyde (furfural, FUR) is the only ... -
Synthesis and antibacterial activity of bimetallic carboxyphosphonates
Cabeza-Díaz, Aurelio; Pérez-Colodrero, Rosario Mercedes; Vílchez-Cózar, Álvaro; Olivera-Pastor, Pascual; Hix, Gary B.; Bazaga-García, Montse[et al.] (2023)
As a class of coordination polymers (CPs), metal phosphonates (MPs) are constructed by coordination bonds connecting metal sites and phosphonate (RPO3 2−) ligands, where the metal sites are dispersed uniformly at the atomic ... -
Synthesis and behavior of Belite-Alite-Ye’elimite (BAY) cement
Londono-Zuluaga, Diana; Tobón, Jorge Iván; García-Aranda, Miguel Ángel; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles (2016-06-29)
Ye’elimite based cements have been studied since 70’s years in China, due to the irrelevant characteristics from a hydraulic and environmental point of view. One of them is the reduced fuel consumption, related to the lower ... -
Synthesis and characterization of M(II) phosphonates (M = Fe, Co, Zn, Mn) as precursors for PEMFCs electrocatalysts
López Vergara, Adrián; Salcedo, Inés R.; Bazaga-García, Montse; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio; Losilla, Enrique R.; Porras-Vázquez, José Manuel[et al.] (2018-11-15)
Metal phosphonates are promising precursors for applications such as proton conductivity [1] and catalysis [2]. Specifically, upon calcination metal polyphosphates are generated that can be used as non-noble metal alternatives ... -
Synthesis and properties of novel lanthanide carboxyphosphonates
Pérez-Colodrero, Rosario Mercedes; Salcedo, Inés R.; Bazaga-García, Montse; Zon, Jerzy; Zareba, Jan K.; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio[et al.] (2021-02-01)
Metal phosphonates are essentially acidic solids featured by groups such as P-OH, -COOH, etc. The presence of bound and lattice water favors the formation of H-bond networks, which make these compounds appropriate as proton ... -
Synthesis and proton conduction properties of lanthanide amino-sulfophosphonates
Salcedo, Inés R.; Quintero, Estefanía; Bazaga-García, Montse; Pérez-Colodrero, Rosario Mercedes; Olivera-Pastor, Pascual; Ramírez-Losilla, Enrique; Cabeza-Díaz, Aurelio[et al.] (2018-06-28)
Acidic groups-containing metal phosphonates exhibit a wide range of proton conductivity depending on the water content and functionality. Moreover, this property can be enhanced by appropriate post-synthesis chemical ... -
Synthesis and proton conduction properties of lanthanide amino-sulfophosphonates
Cabeza-Díaz, Aurelio; Bazaga-García, Montse; Pérez-Colodrero, Rosario Mercedes; Salcedo, Inés R.; Villemin, Didier; Olivera-Pastor, Pascual; Losilla, Enrique R.[et al.] (2016)
Crystalline acid-functionalized metal phosphonates are potential candidates as proton conducting electrolytes. Their frameworks can be chemically modified to contain proton carriers such as acidic groups (P-OH; -SO3H, ... -
Synthesis and scaled-up of non-active and active Belite-Alite-Ye'elimite clinker (BAY)
Zea-Garcia, Jesus D.; García-Aranda, Miguel Ángel; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel (2017-05-17)
Ordinary Portland cement (OPC) is an environmentally contentious material, as for every ton of OPC produced, ~0.97 tons of CO2 are released. This opens the need of designing new formulations of cements formed by low calcite ... -
Synthesis of Au-Cu/SBA(Ti) catalysts for photocatalytic applications
(2018-07-02)In this work, it has been synthesized several Au and Au-Cu alloy photocatalysts supported on two different mesoporous supports: a non-commercial SBA-15 and a post-synthesis TiO2 modified SBA-15 (TiSBA-15), with which a ... -
Synthesis of hollow mesoporous spheres modified with ZrO2 and non-noble metals for the one-step reaction of furfural to 1,4-pentanediol.
Maderuelo-Solera, Rocío; Cecilia-Buenestado, Juan Antonio; García-Sancho, Cristina; Moreno-Tost, Ramón; Mérida-Robles, Josefa María; Maireles-Torres, Pedro Jesús[et al.] (2023)
The synthesis of these porous SiO2 nanospheres modified with ZrO2 was based on a previous work to which different metal loadings were co-precipitated to obtain a family of catalysts ranging from 15% Cu to 15% Co. For the ... -
Synthesis of type A zeolites from natural kaolinite for their application in CO2 capture processes
Jiménez-Gómez, Carmen Pilar; Cecilia-Buenestado, Juan Antonio; Vilarrasa García, Enrique; Cavalcante Jr., Celio L.; De Azevedo, Diana Cristina Silva; Rodríguez-Castellón, Enrique[et al.] (2017-10-02)
Climate change is the greatest environmental threat of the 21st century, with major economic, social and environmental consequences. The level of carbon dioxide (CO2) emissions has increased by 31%, therefore, both governments ... -
Synthesis, characterization and catalytic properties for the ethanol transformation of La-Mg hydrotalcites.
Ballesteros-Plata, Daniel; Cecilia-Buenestado, Juan Antonio; Barroso-Martín, Isabel; Infantes-Molina, Antonia; Balestra, Giulia; Tabanelli, Tomasso; López Nieto, José Manuel; Montaña, Maia; Rodríguez-Castellón, Enrique[et al.] (2023)
Ethylene is considered a key feedstock for the chemical industry because it is possible to obtain a wide range of products such as ethylene oxide, ethylbenzene, 1,2-dichloroethane, polyethylene resin, ethylene glycol, among ... -
Synthesis, structural characterization and electrocatalytic properties of cobalt phosphides and pyrophosphates derived from glyphosine
Cañamero-Cebrián, Fernando; Vílchez-Cózar, Álvaro; Cabeza-Díaz, Aurelio; Pérez-Colodrero, Rosario Mercedes; Bazaga-García, Montse; Olivera-Pastor, Pascual[et al.] (2023)
Metal phosphonates (MPs), a subclass of coordination polymers, result from the bonding of phosphonic acids (RPO32-) with metal ions, giving rise to an uniformly dispersion of the metal sites at the atomic scale. This ...