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Mostrando ítems 51-60 de 92
Artículo
Functionalization of 3-Iridacyclopentenes
(Wiley, 2017)
Members of a series of iridacyclopentenes of composition [TpMe2Ir(k2-C,C-CH2CR′=CRCH2)(CO)] (TpMe2=hydrotris(3,5-dimethylpyrazolyl)borate; R=R′=H, 1; R=Me, R′=H, 2; R=R′=Me, 3) have been subjected to common organic chemistry ...
Artículo
N-substituted Aminobiphenyl Palladacycles Stabilized by Dialkylterphenyl Phosphanes: Preparation and Applications in C[sbnd]N Cross-coupling Reactions
(Elsevier, 2021)
Neutral and cationic N-methyl- and N-phenyl-2-aminobiphenyl methanesulfonate palladacycles stabilized with dialkylterphenyl phosphanes have been prepared and characterized. Neutral structures are favored with the less bulky ...
Artículo
Rhodium(I) Complexes with Ligands Based on N-Heterocyclic Carbene and Hemilabile Pyridine Donors as Highly E Stereoselective Alkyne Hydrosilylation Catalysts
(American Chemical Society, 2017)
Cationic rhodium(I) complexes containing picolyl-NHC (NHC = N-heterocyclic carbene) ligands that differ in the substitution at the 6-position of the pyridine donor serve as efficient E-selective alkyne hydrosilylation ...
Artículo
Evaluation of the Oxygen Mobility in CePO4-Supported Catalysts: Mechanistic Implications on the Water-Gas Shift Reaction
(American Chemical Society, 2020-07-30)
The hexagonal and monoclinic phases of CePO4 have been demonstrated to be excellent catalytic supports for Pt-based water-gas shift (WGS) catalysts. Consequently, the elucidation of the WGS reaction mechanism in these ...
Artículo
Influence of the preparation method in the metal-support interaction and reducibility of Ni-Mg-Al based catalysts for methane steam reforming
(Elsevier, 2019)
Ni-Mg-Al based catalysts were prepared using different preparation methods (impregnation, impregnation-coprecipitation and coprecipitation) and tested in steam reforming of methane. The differences observed in catalytic ...
Artículo
Free-Carbon Surface for PtCu Nanoparticles: An in Situ near Ambient Pressure X-ray Photoelectron Spectroscopy Study
(American Chemical Society, 2020)
Usually, nanoparticle synthesis methodologies require the use of organic molecules (capping agent, solvent molecules, etc.), which results in carbon deposits on the nanoparticle surface. These residues modify the surface ...
Artículo
Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
(Elsevier, 2022)
Liquid fuels produced via Fischer-Tropsch synthesis from biomass-derived syngas constitute an attractive and sustainable energy vector for the transportation sector. This study focuses on the role of potassium as a promoter ...
Artículo
Structural Reversibility of LaCo1-xCuxO3 Followed by In Situ X-ray Diffraction and Absorption Spectroscopy
(Wiley, 2018)
Combinations of perovskite-type oxides with transition andprecious metals exhibit a remarkable self-regenerable propertythat could be exploited for numerous practical applications. Theobjective of the present work was to ...
Artículo
1,2,3-Triazoles from carbonyl azides and alkynes: filling the gap
(Royal Society of Chemistry, 2014)
Electron deficient azides are challenging substrates in CuAAC reactions. Particularly, when N-carbonyl azides are applied the formation of N-carbonyl triazoles has not yet been observed. We report herein the first example ...
Artículo
Selective CO methanation with structured RuO2/Al2O3 catalysts
(Elsevier, 218)
Active and selective structured RuO2/Al2O3 catalysts for CO methanation using a flow simulating CO2-rich reformate gases from WGS and PROX units (H2 excess, CO2 presence and 300 ppm CO concentration) were prepared. Both, ...