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 ...
Sastre Calabuig, Francesc; Puga, Alberto V.; Liu, Lichen; Corma Canós, Avelino; García Gómez, Hermenegildo(American Chemical Society, 2014-05-14)
Nickel supported on silica-alumina is an efficient and reusable photocatalyst for the reduction of CO2 to methane by H-2, reaching selectivity above 95% at CO2 conversion over 90%. Although NiO behaves similarly, it undergoes ...
Liu, Lichen(Universitat Politècnica de València, 2015-02-24)
[EN] In this thesis, I have discussed the synthesis of Cu nanoparticles and their applications in C-N coupling
reactions. I find that Cu nanoparticles will decompose into Cu clusters and Cu clusters are the real
active ...
Liu, Lichen; MEIRA, DEBORA M.; Arenal, Raul; Concepción Heydorn, Patricia; Puga, Alberto V.; Corma Canós, Avelino(American Chemical Society, 2019-12-06)
[EN] Identification of active sites in heterogeneous metal catalysts is critical for understanding the reaction mechanism at the molecular level and for designing more efficient catalysts. Because of their structural ...
[EN] Aluminosilicate boggsite (Si/Al-BOG) has been hydrothermally synthesized without adding org. structure-directing agents
(OSDAs) in the synthesis gel using the borosilicogermanium ITQ-47 (Si/B-ITQ-47) zeolite as seeds. ...
[EN] We show a facile method to prepare surface-clean monodispersed small and stable CuOx nanoparticles with controllable average sizes from below 1 nm up to similar to 5 nm without using bulk capping agent. Structural and ...
Liu, Lichen; Arenal, Raul; Meira, Debora M.; Corma Canós, Avelino(The Royal Society of Chemistry, 2019-02-07)
[EN] In this work, we will report the generation of Au clusters in a purely siliceous MCM-22 zeolite. The catalytic properties of these Au clusters have been tested for the selective oxidation of cyclohexane to cyclohexanol ...
[EN] Single metal atoms and metal clusters have attracted much attention thanks to their advantageous capabilities as heterogeneous catalysts. However, the generation of stable single atoms and clusters on a solid support ...
Liu, Lichen(Universitat Politècnica de València, 2019-10-02)
Las especies de metal con diferentes tamaños (átomos individuales, nanocristales y nanopartículas) muestran un comportamiento catalítico diferente para diversas reacciones catalíticas heterogéneas. Se ha demostrado en la ...
[EN] Ruthenium nanoparticles with a core-shell structure formed by a core of metallic ruthenium and a shell of ruthenium carbide have been synthesized by a mild and easy hydrothermal treatment. The dual structure and ...
[EN] Activation of alkanes can be achieved with different types of catalysts, spanning over enzymes, homogeneous and heterogeneous metal catalysts. Though a tremendous amount of knowledge has been accumulated in the ...
[EN] The catalytic subnanometric metal clusters with a few atoms can be regarded as an intermediate state between single atoms and metal nanoparticles (>1 nm). Their molecule-like electronic structures and flexible geometric ...
[EN] Aromatic azoxy compounds have wide applications and they can be prepared by stoichiometric or catalytic reactions with H2O2 or N2H4 starting from anilines or nitroarenes. In this work, we will present the direct ...
Sorribes-Terrés, Iván; Liu, Lichen; Corma Canós, Avelino(American Chemical Society, 2017)
[EN] Nanolayered molybdenum disulfide cobalt-promoted materials (Co-Mo-S) have been established as chemoselective catalysts for thehydrogenation of nitroarenes under relatively mild conditions. Co-Mo-S catalysts have been ...
[EN] Herein, a general protocol for the preparation of a broad range of valuable N-heterocyclic products by hydrogenation of quinolines and related N-heteroarenes is described. Interestingly, the catalytic hydrogenation ...
Metallic cobalt nanoparticles with surface CoOx patches covered by thin layered carbon (named Co@C) have been directly synthesized by thermal decomposition of Co-EDTA complex. Raman spectra and HRTEM images suggest that ...
[EN] Subnanometric metal species (single atoms and clusters) have been demonstrated to be unique compared with their nanoparticulate counterparts. However, the poor stabilization of subnanometric metal species towards ...
Liu, Lichen; Lopez-Haro, Miguel; Meira, Debora M.; Concepción Heydorn, Patricia; Calvino, Jose J.; Corma Canós, Avelino(John Wiley & Sons, 2020-09-01)
[EN] Preparation of supported metal catalysts with uniform particle size and coordination environment is a challenging and important topic in materials chemistry and catalysis. In this work, we report the regioselective ...
[EN] Sub-nanometric Cu clusters formed by endogenous
reduction of Cu salts and Cu nanoparticles are active
and selective catalysts for C−N, C−C, C−O, C−S, and C−P
bond-forming reactions. Sub-nanometric Cu clusters ...
[EN] Modulating the structures of subnanometric metal clusters at the atomic level is a great synthetic and characterization challenge in catalysis. Here, we show how the catalytic properties of subnanometric platinum ...