• Pair distribution function as a tool to characterize C-S-H gels 

      Cuesta-Garcia, Ana Maria; Morales-Cantero, Alejandro; Gomez-de-la-Torre, Angeles G.; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel (2021)
      Portland cement (PC) is the most manufactured product in the world. However, cement industry is one of the major contributors for greenhouse gas emissions. For every ton of grey PC clinker, around 0.87 CO2 tons are released ...
    • Pair distribution function studies in cementitious systems 

      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.] (2017-10-24)
      The analysis of amorphous/nanocrystalline phase(s) within cement matrices that contain high amounts of crystalline phase(s) is very challenging. Synchrotron techniques can be very useful to characterize such complex samples.1 ...
    • Phase Composition and Transport Properties of oxide ion conductors based on Sr1-xKxGeO3-x/2 

      Dos Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Fernández-Palacios, Sara; Compaña Prieto, José Manuel; Cabeza-Diaz, Aurelio (2015-07-13)
      Oxide ion conductors have been increasingly studied because of their potential applications in different electrochemical devices, such as, oxygen sensors, membranes for oxygen separation and components of fuel cells. Solid ...
    • Photocatalytic behavior of phosphonate-based hybrid materials on dyes and phenols degradation 

      Bazaga-García, Montse; Colodrero, Rosario M.P.; Olivera-Pastor, Pascual; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel (2013-09-25)
      There is increasing interest in using heterogeneous catalysis for mineralization of organic pollutants. Within Advanced Oxidation Processes (AOPs), Photo-Fenton reaction is one of the most efficient methodologies. To ...
    • Porous aluminosilicates as acid catalysts for glucose dehydration to 5-hydroxymethylfurfural 

      Moreno Recio, Mercedes; Moreno-Tost, Ramon; Merida-Robles, Josefa Maria; Santamaria-Gonzalez, Jose; Maireles-Torres, Pedro Jesús (2015-05-12)
      In the present work, the catalytic behavior of micro- and mesoporous aluminosilicates in glucose dehydration is compared. In this sense, different commercial zeolites (Beta, Y and ZSM-5, in their protonic form) and ...
    • Portland cement pastes analysed by synchrotron and laboratory X-ray imaging 

      Shirani, Shiva; Cuesta, Ana; Gomez-de-la-Torre, Maria de los Angeles; P. Olbinado, Margie; García-Aranda, Miguel Ángel (2020)
      Portland Cement (PC) is the most used construction material and the derived building materials have very complex hierarchical microstructures. Quantitative characterization of their microstructures is of paramount importance ...
    • Processing and characterisation of Calcium SulfoAluminate (CSA) eco-cements coated with a hybrid organo-inorganic material for photocatalytic applications 

      Morales-Cantero, Alejandro; Cabeza-Diaz, Aurelio; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel (2015-07-27)
      On the one hand, Calcium SulfoAluminate (CSA) eco-cements are receiving increasing attention since their manufacture produces up to 40% less CO2 than ordinary Portland cement (OPC). In addition, they show interesting ...
    • Producción de 5-etoximetilfurfural desde azúcares derivados de la biomasa usando zeolitas en procesos de 1 y 2 pasos 

      Torres-Olea, Benjamín; García Sancho, Cristina; Cecilia, Juan Antonio; Moreno-Tost, Ramon; Maireles-Torres, Pedro Jesús (2021)
      En este trabajo se ha comprobado la efectividad de la zeolita beta (relación molar Si/Al= 10) en la isomerización de glucosa a fructosa y su deshidratación a HMF, y posterior eterificación a EMF, en un solo paso en etanol, ...
    • Proton conductivity and luminiscence properties of lanthanide aminotriphosphonates 

      Bazaga-García, Montse; Angeli, Giasemi K.; Papathanasiou, Konstantinos E.; Salcedo, Inés R.; Olivera-Pastor, Pascual; [et al.] (2016)
      Metal phosphonates are multifunctional solids with tunable properties, such as internal H-bond networks, and high chemical and thermal stability [1]. In the present work, we describe the synthesis, structural characterization, ...
    • Proton Conductivity in Sulfate-Containing Lanthanide Nitrilotris-methylphosphonates 

      Ruiz Salcedo, Inés; Cabeza-Diaz, Aurelio; Bazaga García, Montse; Pérez Colodrero, Rosario Mercedes; Choquesillo-Lazarte, Duane; [et al.] (2019-09-12)
      Multifunctional metal phosphonates are coordination polymers (CPs) whose structures are usually composed of extended hydrogen-bond networks and thus making them potential candidates as proton conductors [1]. Moreover, these ...
    • Proton conductivity of lanthanide nitrilotris-methylphosphonates 

      R.Salcedo, Inés; Bazaga-García, Montse; Colodrero, Rosario M.P.; Olivera-Pastor, Pascual; Losilla, Enrique R.; [et al.] (2017-07-10)
      Multifunctional metal phosphonates are acidic coordination polymers (CPs) with remarkable stability and proton conducting properties owing to their structure is usually composed of extended hydrogen-bond networks that favor ...
    • Proton conductivity of multifunctional metal phosphonate frameworks 

      Cabeza-Diaz, Aurelio; Bazaga-García, Montse; Colodrero, Rosario M.P.; Papadaki, M.; Olivera-Pastor, Pascual; [et al.] (2015-03-23)
      Metal phosphonates exhibit attractive characteristics for proton conductivity, such as tunable functionality, chemical and thermal stability and the existence of H-bond networks with acidic protons within their structure.1 In ...
    • Proton Conductors based on Metal Phosphonate Hybrid Materials for PEM Fuel Cells 

      Cabeza-Diaz, Aurelio; Colodrero, Rosario M.P.; Bazaga-García, Montse; Hernández Alonso, Daniel; Compaña Prieto, José Manuel; [et al.] (2014-06-25)
      The necessity of energy and power generation is constantly growing. Fossils fuels are quickly becoming unsatisfactory substrates due to both their emission of pollutants and their finite expectancy. Fuel cells are one of ...
    • El proyecto GLOSARIO-SEA. Traducción y adapatación del glosario de la Clay Minerals Society (CMS) 

      Pozo Rodriguez, Manuel; Delgado Calvo-Flores, Rafael; Bentabol-Manzanares, Maria Jose; Villanova, Cristina; Miras Ruiz, Adolfo; [et al.] (Macla, 2022)
      El proyecto de realización de un glosario relacionado con las arcillas se planteó como objetivo de la Sociedad Española de Arcillas (SEA) durante su reunión en Madrid en 2016. Para el proyecto se propuso como coordinador ...
    • Pt-Fe2O3 based catalysts for anisole hydrodeoxygenation 

      Barroso-Martín, Isabel; Infantes-Molina, Antonia; Rodriguez-Castellon, Enrique (2021)
      The depletion of fossil fuels along with massive emissions of greenhouse gases (GHG) emissions are serious issues facing society nowadays. Considering that almost a quarter of fossil fuel consumption is associated with the ...
    • Ptychographic X-ray computed tomography analysis of cement pastes 

      García-Aranda, Miguel Ángel; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Trtik, Pavel; Diaz, Ana (2019-10-04)
      Ptychographic X-ray computed tomography provides 3D electron mass density and attenuationcoefficient distributions of unaltered cement pastes with an isotropic resolution below 100 nm. Thisimaging technique allows ...
    • PXRD and PDF analysis of multifunctional lanthanide nitrilotris-methylphosphonate-based proton conductors 

      Colodrero, Rosario M.P.; Cabeza-Diaz, Aurelio; R.Salcedo, Inés; Bazaga-García, Montse; Olivera-Pastor, Pascual (2017-10-17)
      Metal phosphonates are multifunctional solids which possess tunable properties, such as H-bond networks, while exhibiting high chemical and thermal stability. Depending on the protonation of the ligand, different crystalline ...
    • Quantitative phase Analisis: A comparative study of Mo and Cu strictly monochromatic radiations 

      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)
      A comparison of the Rietveld quantitative phase analyses (RQPA) obtained using Cu-Kα1, Mo-Kα1, and synchrotron strictly monochromatic radiations is presented. The main aim is to test a simple hypothesis: high energy ...
    • 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 ...