Listar QICM - Artículos por título
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N2O Assisted Ethane Transformation into Ethylene Using NiO--CeO2--ZrO2 Catalysts
(Wiley, 2024-11)NiO--CeO2 and NiO--CeO2--ZrO2 catalysts have been synthesized, electrochemically characterized (Mott-Schottky (MS) measurements and Electrochemical Impedance Spectroscopy), physicochemically characterized (by N2 adsorption, ... -
Nanostructured BaCo0.4Fe0.4Zr0.1Y0.1O3- Cathodes with Di erent Microstructural Architectures
(MDPI, 2020-05-30)Lowering the operating temperature of solid oxide fuel cells (SOFCs) is crucial to make this technology commercially viable. In this context, the electrode e ciency at low temperatures could be greatly enhanced by ... -
New directions in metal phosphonate and fhosphinate chemistry
(MDPI www.mdpi.com/journal/crystals, 2019-05-24)In September 2018, the First EuropeanWorkshop on Metal Phosphonates Chemistry brought together some prominent researchers in the field of metal phosphonates and phosphinates with the aim of discussing past and current ... -
NH3/H2O-mediated proton conductivity and photocatalytic behaviour of Fe(II)-hydroxyphosphonoacetate and M(II)-substituted derivatives
(The Royal Society of Chemistry, 2019-12-27)Synthesis redesign and derivatisation of Fe(II)-hydroxyphosphonoacetate, incorporating different ammonia loads and M(II) isomorphic substitutions (M = Mn, Co and Zn), have been implemented. The NH3 adsorption led to materials ... -
Ni-Doped Ordered Nanoporous Carbon Prepared from Chestnut Wood Tannins for the Removal and Photocatalytic Degradation of Methylene Blue
(IOAP-MPDI, 2022-05-10)In this work, Ni-doped ordered nanoporous carbon was prepared by a simple and green one-pot solvent evaporation induced self-assembly process, where chestnut wood tannins were used as a precursor, Pluronic® F-127 as a soft ... -
Novel microstructural strategies to enhance the electrochemical performance of La0.8Sr0.2MnO3-δ cathodes
(American Chemical Society, 2015)Novel strategies based on spray-pyrolysis deposition are proposed to increase the triple-phase boundary (TPB) of La0.8Sr0.2MnO3−δ (LSM) cathodes in contact with yttria-stabilized zirconia (YSZ) electrolyte: (i) nanocrystalline ... -
On the early hydration of cubic ye’elimite: New insights from time-resolved in situ MAS NMR spectroscopy
(Elsevier, 2022-12-02)Two polymorphs of ye’elimite are known to exist in calcium sulfoaluminate cements, namely, orthorhombic (iron free), C4A3$ and cubic/pseudo-cubic (iron incorporated), C4A3-xFx$ forms. The very early hydration behaviour ... -
Oxidation of lignocellulosic platform molecules to value-added chemicals using heterogeneous catalytic technologies
(The Royal Society of Chemistry, 2020-04-10)Currently, much attention is being paid to the development of sustainable catalytic processes for the production of chemicals (biofuels, bioproducts, and so on) from lignocellulosic biomass. This minireview pursues to give ... -
Oxidative Condensation of Furfural with Ethanol Using Pd-Based Catalysts: Influence of the Support
(MDPI, 2020-11-12)PdO nanoparticles were deposited on several supports (β-zeolite, Al2O3, Fe2O3, MgO, and SiO2), which displayed different crystallinity, textural properties, and amount of acid and basic sites. These catalysts were characterized ... -
Perspectives on Cathodes for Protonic Ceramic Fuel Cells.
(MDPI, 2021-06-09)Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 ... -
Phase and microstructure evolutions in LC3 binders by multi-technique approach including synchrotron microtomography
(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
(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
(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
(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
(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
(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
(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
(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
(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 ... -
Processing of calcium sulfoaluminate eco-cement coatings containing microencapsulated phase change materials.
(ICE Publishing, 2023-11-11)On the one hand, calcium sulfoaluminate (CSA) eco-cements release about 40% less carbon dioxide (CO2) than Portland cement during fabrication; on the other hand, phase change materials dispersed in a cementitious matrix ...