QICM - Artículos
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Ruthenium incorporation into hydrotalcites-derived mixed oxides for phenol hydrogenation: Role of Mg/Al molar ratio
Barroso-Martín, Isabel; Benmebirouk-Pareja, Nadia; Montaña, Maia; Cecilia-Buenestado, Juan Antonio
; Infantes-Molina, Antonia; Rodríguez-Castellón, Enrique[et al.] (Elsevier, 2023-06)
In this work the catalytic behaviour of Ru supported on mixed oxides derived from non-commercial hydrotalcites in phenol hydrogenation was studied in a batch reactor working at 30 bar and 200 °C. To this end, a set of ... -
Modification of the Physical Properties of a Nafion Film Due to Inclusion of n-Dodecyltriethylammonium Cation: Time Effect.
Zamudio-García, Javier; Martínez de Yuso, María V.; Cuevas, Ana L.; Marrero-López, David; Benavente-Herrera, Juana (MDPI, 2023-05-30)
This study investigates the effects of modifying commercial Nafion-212 thin films with dodecyltriethylammonium cation (DTA+) on their electrical resistance, elastic modulus, light transmission/reflection and photoluminescence ... -
Effect of Capping Ligands for the Synthesis of Gold Nanoparticles and on the Catalytic Performance for the Oxidation of 5-Hydroxymethyl-2-furfural.
Liuzzi, Francesca; Ventimiglia, Alessia; Allegri, Alessandro; Rodríguez-Aguado, Elena; Cecilia-Buenestado, Juan Antonio; Rivalta, Ivan; Dimitratos, Nikolaos; Albonetti, Stefania[et al.] (MDPI, 2023-06-09)
Different series of Au on carbon catalysts were prepared via sol-immobilization to investigate the role of polymers (polyvinylpyrrolidone PVP, polyethylene glycol PEG and polyvinyl alcohol PVA), employed as gold nanoparticle ... -
Tuning the activity of cobalt 2-hydroxyphosphonoacetates-derived electrocatalysts for water splitting and oxygen reduction: insights into the local order by pair distribution function analysis
Vílchez-Cózar, Álvaro; Colodrero, Rosario M. P.; Bazaga-García, Montse; Marrero-López, David; El-refaei, Sayed M.; Russo, Patricia A.; Pinna, Nicola; Olivera-Pastor, Pascual[et al.] (Elsevier, 2023)
Pyrophosphate- or phosphide-based iron/cobalt electrocatalysts were prepared from the metal (R,S)−2-hydroxyphosphonoacetates to evaluate the effects of metal composition, N-doping and P-enrichment on the electrocatalytic ... -
Tailoring basic and acidic properties of MgAl hydrotalcite by fluoride anions: Effect on glycerol oligomerisation
Maderuelo Solera, Rocío; Ledesma-Muñoz, A.L.; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Infantes-Molina, Antonia; Mérida-Robles, Josefa María; Maireles-Torres, Pedro Jesús; Moreno-Tost, Ramón[et al.] (Elsevier, 2023)
In this work, two families of catalysts based on mixed metal oxides derived from MgAl hydrotalcites were synthesized with a Mg/Al molar ratio of 3. On the one hand, in the first family, the fluoride anion was incorporated ... -
4D nanoimaging of early age cement hydration.
Shirani, Shiva; Cuesta-García, Ana María; Morales-Cantero, Alejandro; Santacruz-Cruz, María Isabel; Díaz, Ana; Trtik, Pavel; Holler, Mirko; Rack, Alexander; Lukic, Bratislav; Brun, Emmanuel; Ruiz Salcedo, Inés; García-Aranda, Miguel Ángel[et al.] (Springer Nature, 2023-05-08)
Despite a century of research, our understanding of cement dissolution and precipitation processes at early ages is very limited. This is due to the lack of methods that can image these processes with enough spatial ... -
Enhancement of the catalytic activity of Mg/Al layered double hydroxide for glycerol oligomers production
Soares Barros, Fernando José; Liu, Yue; Dantas Paula, Clarissa; Murilo Tavares de Luna, Francisco; Silveira Vieira, Rodrigo; Rodríguez-Castellón, Enrique; Silveira Vieira, Rodrigo[et al.] (RSC, 2022-01-27)
In this study, the impact of rehydration on the catalytic properties of Mg/Al layered double hydroxides (LDH) for glycerol ligomerization was assesed. Although previous works have employed other LDH derived materials in ... -
Rapid synthesis of MCM-41 and SBA-15 by microwave irradiation: promising adsorbents for CO2 adsorption
Oliveira, Marília R.; Cecilia, Juan A.; De Conto, Juliana F.; Egues, Silvia M.; Rodríguez-Castellón, Enrique (Elsevier, 2022-12-31)
It is known that the world scenario is one of constant search for sustainable technologies that can reduce the emission of carbon dioxide (CO2) in the atmosphere. This is because CO2 is seen as the main responsible for the ... -
Influence of Lewis and Brønsted acid catalysts in the transformation of hexoses into 5-ethoxymethylfurfural
Torres-Olea, Benjamín; Fúnez Núñez, Inmaculada; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (Elsevier, 2023)
Several sulfonated polymers, which are typical Brønsted acid catalysts, have been employed in the production of two biofuels: 5-ethoxymethylfurfural (EMF) and ethyl levulinate (EL) as main byproduct, and the catalytic ... -
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.; Rodríguez-Castellón, 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; Rodríguez-Castellón, 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
García-Sancho, Cristina; Mérida-Robles, Josefa María; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; 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-García, Ana María; García-Aranda, Miguel Ángel; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles[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; Gómez-de-la-Torre, María de los Ángeles; 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, María Concepción; Larrubia-Vargas, María Ángeles; García-Sancho, Cristina; Maireles-Torres, Pedro Jesús; Moreno-Tost, Ramón[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; Gómez-de-la-Torre, María de los Ángeles; 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-García, Ana María; Morales-Cantero, Alejandro; Gómez-de-la-Torre, María de los Ángeles; 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; Rodríguez-Castellón, 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, Ramón (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 ...