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Listar por palabra clave "Metal clusters"

Mostrando ítems 1-12 de 12

Atomic-level understanding on the evolution behavior of subnanometric Pt and Sn species during high-temperature treatments for generation of dense PtSn clusters in zeolites

Liu, Lichen; Lopez-Haro, Miguel; Wittee Lopes, Christian; MEIRA, DEBORA M.; Concepción Heydorn, Patricia; Calvino, José J.; Corma Canós, Avelino (Elsevier, 2020-11)

[EN] To achieve high-loading of stable subnanometric metal clusters on solid carriers is a challenge since those small metal clusters have strong tendency to sinter into larger nanoparticles. Development of facile synthesis ...
Clusters and single atoms of Pd and Pt: Synthesis and applications in catalysis and as antitumoral agents

Greco, Rossella (Universitat Politècnica de València, 2021-09-02)

[ES] En esta tesis se han estudiado la síntesis y aplicación de clústeres y átomos metálicos aislados de Pd y Pt. Clústeres y átomos aislados han sido sintetizados siguiendo nuevas metodologías en disolución, sin utilizar ...
Diseño racional de materiales zeolíticos: efectos de confinamiento y control de centros metálicos en posiciones de red y extra-red en aplicaciones de interés

Rodríguez Fernández, Aida (Universitat Politècnica de València, 2024-02-29)

[ES] Las zeolitas son catalizadores ampliamente utilizados en una gran variedad de procesos químicos, por lo que la optimización de sus propiedades físico-químicas es fundamental para mejorar su aplicación en procesos de ...
Light-assistance in nitrogen fixation to ammonia by highly dispersed Cs-promoted Ru clusters supported on ZrO2

Yong, Peng; Melillo, Arianna; Shi, Run; Forneli Rubio, Mª Amparo; Antonio Franconetti; Albero-Sancho, Josep; García Gómez, Hermenegildo (Elsevier, 2023-12-15)

[EN] Light-assisted N-2 fixation to NH3 under mild conditions is attracting massive attention to circumvent energy crisis and global warming. Herein, highly dispersed Cs-decorated Ru sub-nanometric clusters supported on ...
Nanomateriales estructurados basados en clústeres metálicos dirigidos a procesos fotoelectrocatalíticos

Pérez de los Cobos Pérez, Daniel (Universitat Politècnica de València, 2023-10-30)

[ES] Durante décadas, los procesos químicos se han desarrollado sin tener en cuenta la repercusión en el entorno y su impacto medioambiental, pero en la actualidad, la concienciación social por el medio ambiente, ha derivado ...
Octahedral Tantalum Bromide Clusters as Catalysts for Light-Driven Hydrogen Evolution

Hernandez-Niño, Jhon Sebastian; Guevara, Daniela; Shamsurin, Maxim; Benassi, Enrico; Sokolov, Maxim N.; Feliz Rodriguez, Marta (American Chemical Society, 2023-11-07)

[EN] Octahedral tantalum clusters are redox-active compounds. [{Ta6Bri12}Bra2(H2O)a4]·4H2O (i = inner; a = apical ligands) cluster results in efficient pre-catalyst for the light-driven H2 production from aqueous protons ...
Parametrization of Catalytic Organic Reactions with Convex Hammett Plots

Leyva Perez, Antonio; Ballesteros-Soberanas, Jordi; Bilanin-Artigado, Cristina (American Chemical Society, 2023-02-01)

[EN] Quantification is essential to fairly compare between synthetic reactions in chemistry. Here we propose two new parameters called "adapted sensitivity constant" (rho(adap)) and "substrate electronics adaptability" ...
Selective Oxidation of Methane into Methanol using Sub-Nanometre Copper Clusters: A Computational Study

Gallego Rodríguez, Mario (Universitat Politècnica de València, 2024-09-02)

[ES] Se investigó la reacción de metano a metanol (MTM) en zeolitas y zeotipos utilizando clústeres subnanométricos de cobre soportados usando como oxidante O2 y sin la intervención de moléculas de agua en todo momento. Para ...
Selective semi-hydrogenation of internal alkynes catalyzed by Pd¿CaCO3 clusters

Ballesteros-Soberanas, Jordi; Hernández-Garrido, Juan Carlos; Cerón-Carrasco, José Pedro; Leyva Perez, Antonio (Elsevier, 2022-04)

[EN] The de-novo synthesis of soluble or solid-supported Pd-(CaCO3)(n) clusters (n = 2-13) and their high catalytic activity for the semi-hydrogenation of internal alkynes compared to terminal alkynes, is presented. ...
Single-Site vs. Cluster Catalysis in High Temperature Oxidations

Serna Merino, Pedro Manuel; Rodríguez-Fernández, Aida; Yacob, Sara; Kliewer, Christine; Moliner Marin, Manuel; Corma Canós, Avelino (John Wiley & Sons, 2021-07-12)

[EN] The behavior of single Pt atoms and small Pt clusters was investigated for high-temperature oxidations. The high stability of these molecular sites in CHA is a key to intrinsic structure-performance descriptions of ...
Sub-nanometer Copper Clusters as Alternative Catalysts for the Selective Oxidation of Methane to Methanol with Molecular O2

Gallego-Rodríguez, Mario; Corma Canós, Avelino; Boronat Zaragoza, Mercedes (American Chemical Society, 2022-07-21)

[EN] The partial oxidation of methane to methanol with molecular O2 at mild reaction conditions is a challenging process, which is efficiently catalyzed in nature by enzymes. As an alternative to the extensively studied ...
Trapping of Metal Atoms and Metal Clusters by Chabazite under Severe Redox Stress

Moliner Marin, Manuel; Gabay, J. E.; Kliewer, C. E.; Serna Merino, Pedro Manuel; Corma Canós, Avelino (American Chemical Society, 2018-10)

[EN] The remarkable ability of Al-containing CHA zeolite to trap and stabilize noble single-metal atoms and metal clusters has facilitated the design of sinter-resistant materials for catalytic applications that require ...