• Role of Mo in catalysts based on noble metals in hydrodeoxygenation reactions 

      Ballesteros-Plata, D.; Infantes-Molina, Antonia; Rodríguez-Aguado, E.; Braos-Garcia, Maria del Pilar; Rodriguez-Castellon, Enrique (2017-06-29)
      The use of bio-energy as a renewable alternative to fossil fuels is nowadays attracting more and more attention. The bio-fuel from biomass seems to be a potential energy substitute for fossil fuels since it is a renewable ...
    • The role of raw powder diffraction data in peer review; past, present and future 

      García-Aranda, Miguel Ángel (2019-09-05)
      Scientific data in our community can be classified, in broad terms, in three large categories: raw, reduced and derived data. IUCr has been very active in promoting the sharing of reduced and derived data for decades in ...
    • Sílices mesoporosas KIT-6 funcionalizadas como catalizadores ácidos para la deshidratación de sorbitol a isosorbida 

      Ginés-Molina, María José; Santamaria-Gonzalez, Jose; Maireles-Torres, Pedro Jesús (2019-06-28)
      La modificación de sílices mesoporosas mediante la incorporación de heteroátomos (Zr, Al, Ti, entre otros) y/o tratamiento con ácidos minerales es una estrategia atractiva en catálisis heterogénea para la preparación de ...
    • Single and solid solutions metal carboxyphosphonates as precursors for phosphorous-containing electrocatalysts 

      López-Vergara, Adrián; El-Refaei, S.M.; Russo, P.A.; Vilchez, A; Losilla, Enrique R.; [et al.] (2019-07-19)
      Co1-xFex-HPAA metal phosphonates were prepared and pyrolyzed under N2 and H2/Ar flows. The result-ing powders were structural and electrochemically characterised by XRD and CV, respectively. The ob-tained materials possess ...
    • Síntesis hidrotermal de tobelita rica en Mg 

      Bentabol-Manzanares, Maria Jose; Huertas, F.Javier (2018-07-10)
      La tobelita ha sido descrita en ambientes de baja temperatura y sintetizada a diferentes temperaturas. Además de tobelita se han sintetizado los términos intermedios entre tobelita y moscovita, a partir de caolinita. En ...
    • Solid Oxide Fuel Cells based on Lanthanum Tungstates Electrolytes 

      Porras-Vázquez, José Manuel; Zayas-Rey, María José; Ramirez-Losilla, Enrique; Marrero-López, David; Dos Santos-Gómez, Lucía (2015-07-13)
      Lanthanum tungstate with composition La27W4NbO55- (LWNO) has been tested as proton conductor electrolyte for Solid Oxide Fuel Cells (SOFCs). For this purpose, different electrodes and composite electrodes are considered, ...
    • Solución sólida en micas sintetizadas hidrotermlamente a partir de caolinita a 400ºC 

      Bentabol-Manzanares, Maria Jose; Abad, Isabel (2019-06-28)
      La transformación de caolinita en mica dioctaédrica ha sido descrita y sintetizada en diferentes condiciones de temperatura, pH y ambientes químicos (Chermark y Rimstidt, 1990; Huang, 1993; Bauer et al., 1998; Bentabol ...
    • Stability of epitaxial heterostructured materials 

      Dos Santos-Gómez, Lucía; Sanna, Simone; Esposito, Vincenzo; Pryds, Nini; Marrero-López, David; [et al.] (2019)
      Heterostructured materials are a new family of artificial compounds where the electronic and ionic properties can be modulated by varying the characteristics of the different material layers. These properties arise from ...
    • Structural analysis and sintering aids effects in La2Ce2O7 proton conductors 

      Zamudio-García, J; Porras Vázquez, José Manuel; Losilla, Enrique R.; Marrero-López, David (2018-11-15)
      Global warming is an important problem that has to be solved without delay. The development of environmental-friendly energy technology is needed to deal with this issue. Solid Oxide Fuel Cells (SOFC) technology has been ...
    • Structural study of the local order in ammonia-modulated FE(II) hydroxyphosphonoacetate proton conductors 

      Bazaga-García, Montse; Cabeza-Diaz, Aurelio; Pérez Colodrero, Rosario M.; Salcedo, Inés R.; Olivera-Pastor, Pascual; [et al.] (2017-10-17)
      Layered Fe(II) carboxiphosphonate, Fe-HPAA·2H2O, is a crystalline multifunctional coordination polymer exhibiting properties as photocatalyst and proton conductor. Postsynthesis modification by ammonia/water adsorption ...
    • Structural Variability in Multifunctional Metal Xylenediaminetetraphosphonate Hybrids 

      Pérez Colodrero, Rosario M.; Bazaga-García, Montse; Olivera-Pastor, Pascual; Losilla, Enrique R.; Martos, E.Q.; [et al.] (2013)
      The two cornerstones in the field of MOFs are the Secondary Building Units (SBU’s or “bricks”) and the organic linkers. The structural tunability of crystalline MOFs coupled, when possible, with high chemical and thermal ...
    • 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 ...