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    •   RIUMA Principal
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    • Química Inorgánica, Cristalografía y Mineralografía - (QICM)
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      • Phase and microstructure evolutions in LC3 binders by multi-technique approach including synchrotron microtomography 

        Bernal, Isabel M.R.; Shirani, Shiva; Cuesta-Garcia, Ana Maria; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel (Elsevier, 2021-06-19)
        Limestone Calcined Clay Cements, LC3, are attracting a lot of attention as it is possible to reduce the clinker factor by 50%, which means a cement CO2 footprint reduction of 40%. This is compatible with maintaining the ...
      • Phase Transformation Dynamics in Sulfate-Loaded Lanthanide Triphosphonates. Proton Conductivity and Application as Fillers in PEMFCs 

        Salcedo, Inés R.; Pérez Colodrero, Rosario M.; Bazaga-García, Montse; López González, María del Mar; del Río, Carmen; [et al.] (ACS Publications. American Chemical Society, 2021)
        Phase transformation dynamics and proton conduction properties are reported for cationic layer-featured coordination polymers derived from the combination of lanthanide ions (Ln3+) with nitrilo-tris(methylenephosphonic ...
      • Phase-selective degree of hydration at setting: An in situ synchrotron diffraction study 

        Morales-Cantero, Alejandro; Cuesta, Ana; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel; Gomez-de-la-Torre, Maria de los Angeles (Elsevier, 2022-03)
        Setting of Portland cements is still not well understood. Previous studies used techniques that analyse the pastes as a whole to correlate setting times with degree of hydration. Here, in-situ synchrotron X-ray diffraction ...
      • Phosphonate Decomposition-Induced Polyoxomolybdate Dumbbell-Type Cluster Formation: Structural Analysis, Proton Conduction, and Catalytic Sulfoxide Reduction 

        Armakola, Eirini; Salcedo, Inés R.; Bazaga-García, Montse; Mezei, Gellert; Cabeza-Diaz, Aurelio; [et al.] (ACS publications, 2019-08-12)
        The reaction of MoO4^2− with a number of phosphonic acids [bis-(phosphonomethyl)glycine, R,S-hydroxyphosphonoacetic acid, 1-hydroxyethane-1,1-diphosphonic acid, phenylphosphonic acid, aminotris(methylene phosphonic acid), ...
      • Photodegradation of Phenol over a Hybrid Organo-Inorganic Material: Iron(II) Hydroxyphosphonoacetate 

        Bazaga-García, Montse; Cabeza-Diaz, Aurelio; Olivera-Pastor, Pascual; Santacruz-Cruz, Maria Isabel; Perez-Colodrero, Rosario Mercedes; [et al.] (American Chemical Society, 2012-06-20)
        Water treatment is a hot topic, and it will become much more important in the decades ahead. Advanced oxidation processes are being increasingly used for organic contaminant removal, for example using photo-Fenton reactions. ...
      • Porous SiO2 Nanospheres Modified with ZrO2 and Their Use in One- Pot Catalytic Processes to Obtain Value-Added Chemicals from Furfural 

        Maderuelo Solera, Rocío; Richter, Stefan; Jiménez-Gómez, Carmen Pilar; Garcia-Sancho, Cristina; García-Mateos, Francisco José; [et al.] (American Chemical Society, 2021-11-26)
        Porous SiO2 nanospheres have been modified with different proportion of ZrO2 to obtain catalysts with Si/Zr molar ratio between 2.5 and 30. These materials were characterized by X-ray diffraction, transmission electron ...
      • Portland and belite cement hydration acceleration by C-S-H seeds with variable w/c ratios 

        Mazanec, Oliver; Borralleras, Pere; Weldert, Kai S.; Gastaldi, Daniela; Canonico, Fulvio; [et al.] (Materials, 2022)
        The acceleration of very early age cement hydration by C-S-H seeding is getting attention from scholars and field applications because the enhanced early age features do not compromise later age performances. This acceleration ...
      • Portland and Belite Cement Hydration Acceleration by C-S-H Seeds with Variable w/c Ratios 

        Morales-Cantero, Alejandro; Cuesta, Ana; De la Torre, Angeles G.; Mazanec, Oliver; Borralleras, Pere; [et al.] (IOAP-MPDI, 2002-05-16)
        The acceleration of very early age cement hydration by C-S-H seeding is getting attention from scholars and field applications because the enhanced early age features do not compromise later age performances. This acceleration ...
      • Processing and characterisation of standard and doped alite-belite-ye'elimite ecocement pastes and mortars 

        Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel (2020-02-26)
        Here, we report the processing optimisation of two laboratory-prepared alite-belite-ye'elimite ecocements (standard and doped) that release to the atmosphere ~13% less CO2 than Portland Cement during fabrication. The ...
      • Production of Biofuels by 5-Hydroxymethylfurfural Etherification Using Ion-Exchange Resins as Solid Acid Catalysts 

        Torres-Olea, Benjamín; Fúnez Núñez, Inmaculada; Garcia-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramon; [et al.] (mdpi, 2020-11-09)
        In this work, acidic ion-exchange resins with strong Brönsted sulphonic groups were assessed in the catalytic etherification of the platform molecule 5-(hydroxymethyl)furfural (HMF) to 5-(ethoxymethyl)furfural (EMF), a ...
      • Properties and Applications of Metal Phosphates and Pyrophosphates as Proton Conductors 

        P. Colodrero, Rosario M.; Olivera-Pastor, Pascual; Cabeza-Diaz, Aurelio; Bazaga-García, Montse (MDPI, 2022-02-09)
        We review the progress in metal phosphate structural chemistry focused on proton conductivity properties and applications. Attention is paid to structure–property relationships, which ultimately determine the potential ...
      • Pseudo-cubic crystal structure and phase transition in doped ye'elimite 

        Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Ramirez-Losilla, Enrique; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel (ACS publications, 2014)
        Sodalites are tridimensional alumino-silicate materials containing cages where loosely bonded anions are located. Ye'elimite, Ca4[Al6O12]SO4, is outstanding as an aluminate sodalite with a flexible framework accepting ...
      • Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomography 

        Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Diaz, Ana; Trtik, Pavel; [et al.] (IUCr, 2019)
        Mortars and concretes are ubiquitous materials with very complex hierarchical microstructures. To fully understand their main properties and to decrease their CO2 footprint, a sound description of their spatially resolved ...
      • Reactive belite stabilization mechanisms by boron-bearing dopants 

        Cuesta-Garcia, Ana Maria; Losilla, Enrique R.; García-Aranda, Miguel Ángel; Sanz, Jesús; Gomez-de-la-Torre, Maria de los Angeles (Elselvier, 2012-01-27)
        Belite-rich cements hold promise for reduced energy consumption and CO2 emissions, but their use is hindered by the slow hydration rates of ordinary belites. This drawback may be overcome by activation of belite by doping. ...
      • Recent Advances in Mechanochemical Pretreatment of Lignocellulosic Biomass 

        Pérez Merchán, Antonio Manuel; Rodríguez Carballo, Gabriela; Torres-Olea, Benjamín; García Sancho, Cristina; Maireles-Torres, Pedro Jesús; [et al.] (IOAP-MPDI, 2022-08-17)
        Biorefineries are industrial facilities where biomass is converted into chemicals, fuels and energy. The use of lignocellulose as raw material implies the development of pretreatments to reduce its recalcitrant character ...
      • Recent studies of cements and concretes by synchrotron radiation crystallographic and cognate methods 

        García-Aranda, Miguel Ángel (Taylon & Francis, 2015)
        The portfolio of available synchrotron radiation techniques is increasing notably for cements and pastes. Furthermore, sometimes the terminology is confusing and an overall picture highlighting similarities and differences ...
      • Recovery of pentoses-containing olive stones for their conversion into furfural in the presence of solid acid catalysts 

        Fúnez Núñez, Inmaculada; Garcia-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramon; Serrano Cantador, Luis; [et al.] (2020-06-24)
        Olive stones were employed as feedstock for furfural production in two stages: 1) autohydrolysis of hemicellulosic fraction to recover their pentoses, mainly xylose, and 2) subsequent dehydration of pentoses into furfural. ...
      • Relationship between the Structure and Transport Properties in the Ce1−xLaxO2−x/2 System 

        Zamudio-García, Javier; Porras-Vázquez, José Manuel; Canales-Vázquez, J.; Cabeza-Diaz, Aurelio; Losilla, Enrique R.; [et al.] (American Chemical Society, 2019-06-25)
        La-doped CeO2 materials have been widely investigated for potential applications in different high-temperature electrochemical devices, such as fuel cells and ceramic membranes for hydrogen production. However, the crystal ...
      • Rheological and hydration characterization of calcium sulfoaluminate cement pastes 

        García-Maté, Marta; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; García-Aranda, Miguel Ángel (2015-05-14)
        Calcium sulfoaluminate (CSA) cements are currently receiving a lot of attention because their manufacture produces less CO2 than ordinary Portland cement (OPC). However, it is essential to understand all parameters which ...
      • Rietveld quantitative phase analyses of SRM 2686a: a standard Portland clinker 

        García-Maté, Marta; Álvarez-Pinazo, Gema; León-Reina, Laura; Gomez-de-la-Torre, Maria de los Angeles (2018-10-03)
        SRM 2686a is a NIST reference Portland clinker with reported mineralogical analysis from powder diffraction and electron microscopy. This sample is used in ASTM C1365 test method for Rietveld quantitative phase analysis ...
        REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
        REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
         

         

        REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
        REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA