• Structure-properties correlations in divalent metal phosphonates 

      Pérez Colodrero, Rosario M.; Bazaga-García, Montse; Olivera-Pastor, Pascual; Ramirez-Losilla, Enrique; Salcedo, Inés R.; [et al.] (2016)
      Crystalline metal phosphonates may offer acidic sites, structural flexibility and guest molecules (H2O, heterocyclics, etc.) which can act as proton carriers. In addition, some frameworks are also amenable for post‐synthesis ...
    • Sulphated KIT6-Zr as an efficient solid acid catalyst for the production of isosorbide from sorbitol 

      Ginés-Molina, María José; Santamaria-Gonzalez, Jose; Maireles-Torres, Pedro Jesús (2018-07-17)
      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, 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-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; 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-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; 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-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria 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-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; [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, Juan Antonio; Moreno-Tost, Ramon; Serrano Cantador, Luis; [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 behavior of Belite-Alite-Ye’elimite (BAY) cement 

      Londono-Zuluaga, Diana; Tobon, J.I.; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles (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-Diaz, Aurelio; [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 M.; Salcedo, Inés R.; Bazaga-García, Montse; Zon, Jerzy; Zaręba, J.; [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 M.; Olivera-Pastor, Pascual; [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-Diaz, Aurelio; Bazaga-García, Montse; Pérez Colodrero, Rosario M.; Salcedo, Inés R.; Villemin, Didier; [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; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria 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 

      Barroso-Martín, Isabel (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 type A zeolites from natural kaolinite for their application in CO2 capture processes 

      Jiménez-Gómez, Carmen Pilar; Cecilia, Juan Antonio; Vilarrasa García, Enrique; Cavalcante Jr., Celio L.; Azevedo, Diana C.S.; [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 ...
    • The use of mo and cu monochromatic radiations for quantitative phase analysis: study of the accuracy 

      Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; Cuesta-Garcia, Ana Maria; García-Maté, Marta; Álvarez-Pinazo, Gema; [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, Ana; 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 

      Huertas, F. Javier; Bentabol-Manzanares, Maria Jose; Van Driessche, Alexander (Macla, 2022)
      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 

      Vilchez Cózar, Álvaro; Pérez Colodrero, Rosario M.; Bazaga-García, Montse; Salcedo, Inés R.; Olivera-Pastor, Pascual; [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 ...