Maria K. López González
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Maria K. López González has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- Maria Roxana Morales
Facultad de Química, Bioquímica y Farmacia, Instituto de Investigación en Tecnología Química (INTEQUI-CONICET), Universidad Nacional de San Luis (UNSL), Almirante Brown 1455, San Luis 5700, Argentina
2 shared publications - David Villalgordo-Hernández
Laboratory of Advanced Materials, Inorganic Chemistry Department, University Materials Institute of Alicante, University of Alicante, 03080 Alicante, Spain
1 shared publication - Enrique Vicente Ramos-Fernandez
King Abdullah University of Science and Technology (KAUST)
1 shared publication - Javier Narciso
Laboratorio de Materiales Avanzados, Departamento de Química Inorgánica, Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Apartado 99, 03080 Alicante, Spain
1 shared publication - Leidy Figueroa-Quintero
Inorganic Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University of Alicante, 03080 Alicante, Spain
1 shared publication - Luis E. Cadus
Facultad de Química, Bioquímica y Farmacia, Instituto de Investigación en Tecnología Química (INTE-QUI-CONICET), Universidad Nacional de San Luis (UNSL), Almirante Brown 1455, San Luis 5700, Argentina
1 shared publication
Latest Publications
- Open Access
Reactive Infiltration: Effects of Different Parameters
Currently, the production of complex SiC and SiC/SiC parts through reactive infiltration is one of the most widely used technologies, due to its versatility and cost-effectiveness compared to more conventional technologies such as Hot Isostatic Pressing (HIP). This technology, while widely adopted, still faces some debate regarding the mechanisms of infiltration. Questions persist about what determines how infiltration occurs and whether the process is governed by physics (flow dynamics) or chemistry (reactions at the triple line (LT: (contact line between the solid, liquid and gas phases)). The present work provides new strong/consistent proof that reactive infiltration is mainly controlled by chemical reaction.
Open AccessReactive Infiltration: Effects of Different Parameters
Currently, the production of complex SiC and SiC/SiC parts through reactive infiltration is one of the most widely used technologies, due to its versatility and cost-effectiveness compared to more conventional technologies such as Hot Isostatic Pressing (HIP). This technology, while widely adopted, still faces some debate regarding the mechanisms of infiltration. Questions persist about what determines how infiltration occurs and whether the process is governed by physics (flow dynamics) or chemistry (reactions at the triple line (LT: (contact line between the solid, liquid and gas phases)). The present work provides new strong/consistent proof that reactive infiltration is mainly controlled by chemical reaction.
- 23 September 2023
- Published by Elsevier in Journal of Physics and Chemistry of Solids
- Vol. 183
On the scope of mechanochemical activation: The case of Cu/ZnO catalytic systems
- 23 September 2023
- Published by Elsevier in Journal of Physics and Chemistry of Solids
- Vol. 183
On the scope of mechanochemical activation: The case of Cu/ZnO catalytic systems
- Open Access
- 9 November 2020
- Published by MDPI AG in Chemistry Proceedings
- Vol. 2 (1) , 30
Cux/ZnO-y Catalysts. Effect of Support Modification by High Energy Milling on the Metal-Support Interaction
Commercial ZnO was subjected to high-energy milling to introduce structural modifications, which can result in a different metal-support interaction. The milling time (0 to 960 min) and vial material and mill balls (WC and ZnO2), were modified. The supports were characterized by XRD, Scherrer, SBET and Raman Spectroscopy. With the increase in milling time, an increase in the accrued kinetic energy (Ecum) was observed. For the same Ecum, with ZrO2, twice the area was obtained in just 6 min. Cu was deposited on both, the milled support (ZnO-z) and unmilled support (ZnO-0) in three compositions; x = 0.2, 0.5, and 1.0 (%wt). Atomic Absorption Spectroscopy (AAS) measurements showed Cu compositions similar to the theoretical ones. XRD studies, Rietveld modelling and Raman Spectroscopy confirmed that Cu2+ cations could be localized, either by substituting the Zn2+ ions or interstitially in the network, depending on the metal content. The TPR profiles showed two types of copper species, which interact differently with the support. Likewise, the analysis of the XPS results showed that, with the increase in Cu content, for Cux/ZnO-0, there is a decrease in the metal-support interaction. However, for Cux/ZnO-z the interaction increases, which can be associated with the introduction of structural defects accompanied by superficial energy changes. For both systems, different catalytic behaviours are expected in the hydrogenolysis reaction of glycerol in liquid phase, regarding selectivity and stability, as a result of the metal-support interaction achieved.
- 9 November 2020
- Published by MDPI AG in Chemistry Proceedings
- Vol. 2 (1) , 30
Open AccessCux/ZnO-y Catalysts. Effect of Support Modification by High Energy Milling on the Metal-Support Interaction
Commercial ZnO was subjected to high-energy milling to introduce structural modifications, which can result in a different metal-support interaction. The milling time (0 to 960 min) and vial material and mill balls (WC and ZnO2), were modified. The supports were characterized by XRD, Scherrer, SBET and Raman Spectroscopy. With the increase in milling time, an increase in the accrued kinetic energy (Ecum) was observed. For the same Ecum, with ZrO2, twice the area was obtained in just 6 min. Cu was deposited on both, the milled support (ZnO-z) and unmilled support (ZnO-0) in three compositions; x = 0.2, 0.5, and 1.0 (%wt). Atomic Absorption Spectroscopy (AAS) measurements showed Cu compositions similar to the theoretical ones. XRD studies, Rietveld modelling and Raman Spectroscopy confirmed that Cu2+ cations could be localized, either by substituting the Zn2+ ions or interstitially in the network, depending on the metal content. The TPR profiles showed two types of copper species, which interact differently with the support. Likewise, the analysis of the XPS results showed that, with the increase in Cu content, for Cux/ZnO-0, there is a decrease in the metal-support interaction. However, for Cux/ZnO-z the interaction increases, which can be associated with the introduction of structural defects accompanied by superficial energy changes. For both systems, different catalytic behaviours are expected in the hydrogenolysis reaction of glycerol in liquid phase, regarding selectivity and stability, as a result of the metal-support interaction achieved.