QICM - Artículos
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Selective Catalytic Reduction of NOx by CO over Cu(Fe)/SBA-15 Catalysts: Effects of the Metal Loading on the Catalytic Activity
Souza, Monique S.; Martins, Antonio J.; Ribeiro, Jackson Anderson S.; Campos, Adriana; Oliveira, Alcineia C.; Jucá, Raí F.; Saraiva, Gilberto D.; Rodriguez-Castellon, Enrique
; Araujo, Rinaldo S.[et al.] (IOAP-MDPI, 2023-03-04)
Mesoporous Cu(Fe)/SBA-15 catalysts were prepared with distinct metal loadings of ca. 2–10 wt.%. A detailed set of characterizations using X-ray diffraction (XRD), electron paramagnetic resonance (EPR), transmission electron ... -
Recent Advances in C-S-H Nucleation Seeding for Improving Cement Performances
(IOAP-MDPI, 2023-02-09)Reducing cement CO2 footprint is a societal need. This is being achieved mainly by replacing an increasing amount of Portland clinker by supplementary cementitious materials. However, this comes at a price: lower mechanical ... -
Synthesis and Frictional Characteristics of Bio-Based Lubricants Obtained from Fatty Acids of Castor Oil
Paulo Roberto, Campos Flexa Ribeiro Filho; Rocha do Nascimento, Matheus; Otaviano da Silva, Silvia Shelly; Murilo Tavares de Luna, Francisco; Rodriguez-Castellon, Enrique; Loureiro Cavalcante, Célio[et al.] (IOAP-MDPI, 2023-01-31)
The depletion of oil reserves and concerns about the environmental impact of the use and incorrect disposal of mineral lubricants have been promoting the development of bio-based lubricants. In this study, biolubricants ... -
The Role of Copper in the Hydrogenation of Furfural and Levulinic Acid
Garcia-Sancho, Cristina; Merida-Robles, Josefa Maria; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramon; Maireles-Torres, Pedro Jesús (IOAP-MDPI, 2023-01-26)
Currently, there is a great interest in the development of sustainable and green technologies for production of biofuels and chemicals. In this sense, much attention is being paid to lignocellulosic biomass as feedstock, ... -
Early hydration of belite-ye’elimite-ferrite cements: Role of admixtures
Pérez-Bravo, Raquel; Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles[et al.] (sciencedirect, 2023)
The effect of TIPA and CaCl2 on early hydration, i.e. 24 h, of a B-BYF cement has been studied by in situ synchrotron X-ray powder diffraction, calorimetry, thermal analysis, NMR, and rheological measurements of the pastes ... -
Reactivity of C3S and model cement in presence of Na2S2O3 and NaSCN
Gonzalez-Panicello, Laura; Gomez-de-la-Torre, Maria de los Angeles; Palacios, Marta (Springer, 2023-01)
The impact of NaSCN and Na2S2O3 on the reactivity, microstructure and morphology of C3S and model cement (with a clinker containing 85% C3S and 15% C3A) pastes was systematically investigated. Results concluded that both ... -
Mixed Oxides Derived from Hydrotalcites Mg/Al Active in the Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol
López-Asensio, Raquel; Cecilia-Buenestado, Juan Antonio; Herrera-Delgado, Maria Concepcion; Larrubia-Vargas, María Ángeles; Garcia-Sancho, Cristina; Maireles-Torres, Pedro Jesús; Moreno-Tost, Ramon[et al.] (IOAP-MDPI, 2022-12-26)
Herein, a family of Mg/Al hydrotalcites was synthesized as catalytic precursors of MgAlOx mixed oxides. Both hydrotalcites and mixed oxides were characterized and the mixed oxides were tested in the reduction of furfural ... -
Alternative non-Portland binders
Hanein, Theodore; Gomez-de-la-Torre, Maria de los Angeles; Zhang, Zuhua; Provis, John L. (Mineralogical Society of America, 2022)
A background on non-Portland cementitious binders is presented, followed by a review of the key alternative binders that are currently of interest. The mineralogy of these cements is described, along with phases present ... -
Recent Advances in C-S-H Nucleation Seeding for Improving Cement Performances
Cuesta-Garcia, Ana Maria; Morales-Cantero, Alejandro; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel (MDPI, 2023)
Reducing cement CO2 footprint is a societal need. This is being achieved mainly by replacing an increasing amount of Portland clinker by supplementary cementitious materials. However, this comes at a price: lower mechanical ... -
Effect of Basic Promoters on Porous Supported Alumina Catalysts for Acetins Production
Bezerra, Rita de Cássia F.; Mota, Gabriela; Vidal, Ruth Maria B.; Vitor do Carmo, Jose; Saraiva, Gilberto D.; Campos, Adriana; Oliveira, Alcineia C.; Lang, Rossano; Otubo, Larissa; Jiménez-Jiménez, José; Rodriguez-Castellon, Enrique[et al.] (IOAP-MDPI, 2022-12-09)
A facile strategy for the design of porous supports was obtained by modifying the sol-gel method followed by the wet impregnation technique. In this respect, herein, the acidity of the γ-Al2O3 phase was modulated by adding ... -
Recent Advances in Mesoporous Materials and Their Biomedical Applications
Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramon (IOAP-MDPI, 2022-12-09)
Since the beginning of civilization, porous materials have been used for medical purposes. Some studies have reported that the first uses of applications of porous materials were carried out by the Ancient Egyptian or ... -
Modification of the Textural Properties of Chitosan to Obtain Biochars for CO2-Capture Processes
Barroso Martín, Isabel; Cecilia-Buenestado, Juan Antonio; Vilarrasa García, Enrique; Ballesteros Plata, Daniel; Jiménez Gómez, Carmen Pilar; Vílchez-Cózar, Álvaro; Infantes-Molina, Antonia; Rodriguez-Castellon, Enrique[et al.] (IOAP-MDPI, 2022-12-01)
Three chitosans with different morphologies have been used (commercial chitosan powder, chitosan in film form and chitosan in globular form synthesized by the freeze-dried method) for the synthesis of biochars. The pyrolytic ... -
Materials Design for N2O Capture: Separation in Gas Mixtures
Ballesteros Plata, Daniel; Cecilia-Buenestado, Juan Antonio; Barroso Martín, Isabel; Jiménez-Jiménez, José; Infantes-Molina, Antonia; Rodriguez-Castellon, Enrique[et al.] (IOAP-MDPI, 2022-11-29)
The adsorption of greenhouse gases (GHG) as a method to reduce their emissions into the atmosphere is an alternative that is easier to implement industrially and cheaper than other existing technologies, such as chemical ... -
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 ... -
Limestone calcined clay binders based on a Belite-rich cement
Redondo-Soto, Cinthya; Morales-Cantero, Alejandro; Cuesta, Ana; Santacruz-Cruz, Maria Isabel; Gastaldi, Daniela; Canonico, Fulvio; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2023)
Portland-based Limestone Calcined Clay Cements, LC3, are receiving considerable attention because the CO2 footprint can be reduced up to 40 %. Here, we report a related family: Belite-rich-LC3. These blends are expected ... -
Belite clinkers with increasing aluminium content: effect of calcium aluminates on calcium silicate hydration
(Elsevier, 2022)Belite cements (BCs) could have advantages over Portland cements concerning durability, low heat development and the use of less demanding raw materials. The activation of BCs by sulfur addition at the clinkering stage and ... -
In-situ laboratory X-ray diffraction applied to assess cement hydration
de Matos, Paulo R.; Andrade Neto, José da Silva; Jansen, Daniel; Gomez-de-la-Torre, Maria de los Angeles; Kirchheim, Ana Paula; Campos, Carlos E. M.[et al.] (sciencedirect, 2022)
In-situ X-ray diffraction (XRD) is a powerful tool to assess the hydration of cementitious materials, providing time-resolved quantitative analysis with reasonable accuracy without disturbing sample. However, the lack ... -
The role of nitride species in the gas-phase furfural hydrogenation activity of supported nickel catalysts
Jiménez-Gómez, Carmen Pilar; Defilippi, Chiara; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramon; Maireles-Torres, Pedro Jesús; Giordano, Cristina[et al.] (Elsevier B.V., 2020-03-11)
A series of C-rich nickel nitride nanoparticles supported on silica has been prepared by the urea glass route, with urea as nitrogen and carbon source, and characterized by different physico-chemical techniques. They consist ... -
Oxidation of lignocellulosic platform molecules to value-added chemicals using heterogeneous catalytic technologies
Arias, Pedro Luis; Cecilia-Buenestado, Juan Antonio; Gandarias, Iñaki; Iglesias, Jose; López Granados, Manuel; Mariscal, Rafael; Morales, Gabriel; Moreno-Tost, Ramon; Maireles-Torres, Pedro Jesús[et al.] (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 ... -
Mixed Ionic-Electronic Conductivity, Redox Behavior and Thermochemical Expansion of Mn-Substituted 5YSZ as an Interlayer Material for Reversible Solid Oxide Cells
Natoli, Alejandro; Arias-Serrano, Blanca I.; Rodriguez-Castellon, Enrique; Żurawska, Agnieszka; Frade, Jorge R.; Yaremchenko, Aleksey. A.[et al.] (IOAP-MPDI, 2021-01-30)
Manganese-substituted 5 mol.% yttria-stabilized zirconia (5YSZ) was explored as a prospective material for protective interlayers between electrolyte and oxygen electrodes in reversible solid oxide fuel/electrolysis cells. ...