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Mostrando ítems 91-100 de 453
Artículo
Influence of N-donor bases and the solvent in oxodiperoxomolybdenum catalysed olefin epoxidation with hydrogen peroxide in ionic liquids
(Royal Society of Chemistry, 2011)
Biphasic catalytic olefin epoxidation systems consisting of oxodiperoxomolybdenum catalysts in 1- n -alkyl-3-methylimidazolium hexafluorophosphate ionic liquid (IL) media with aqueous hydrogen peroxide oxidant were optimised ...
Artículo
Unmasking the constitution and bonding of the proposed lithium nickelate “Li3NiPh3(solv)3”: revealing the hidden C6H4 ligand
(Royal Society of Chemistry, 2022)
More than four decades ago, a complex identified as the planar homoleptic lithium nickelate “Li3NiPh3(solv)3” was reported by Taube and co-workers. This and subsequent reports involving this complex have lain dormant since; ...
Artículo
Near-ambient X-ray photoemission spectroscopy and kinetic approach to the mechanism of carbon monoxide oxidation over lanthanum substituted cobaltites
(Elsevier, 2009)
We have studied the oxidation of carbon monoxide over a lanthanum substituted perovskite (La0.5Sr0.5CoO3-d) catalyst prepared by spray pyrolysis. Under the assumption of a first-order kinetics mechanism for CO, it has been ...
Artículo
Synthesis, properties, and some rhodium, iridium, and platinum complexes of a series of bulky m-terphenylphosphine ligands
(Elsevier, 2016)
A series of sterically demanding aryl phosphine ligands (L) bearing terphenyl substituents, PR2Ar′ (R = hydrocarbyl, Ar′ = 2,6-diarylphenyl radical) has been prepared and characterized. The stability of these ligands towards ...
Artículo
Upgrading the PtCu intermetallic compounds: The role of Pt and Cu in the alloy
(Elsevier B.V., 2020-10-01)
This work is devoted to the study of the role of both metals in the intermetallic PtxCuy/ γ Al2O3 catalysts commonly employed in CO-PROX reaction. Therefore, monometallic Pt and Cu based catalysts and PtCu intermetallic ...
Artículo
In-situ HDO of guaiacol over nitrogen-doped activated carbon supported nickel nanoparticles
(Elsevier, 2021)
In-situ hydrodeoxygenation of guaiacol over Ni-based nitrogen-doped activated carbon supported catalysts is presented in this paper as an economically viable route for bio-resources upgrading. The overriding concept of ...
Artículo
Free-Base Carboxyphenyl Porphyrin Films Using a TiO2 Columnar Matrix: Characterization and Application as NO2 Sensors
(Multidisciplinary Digital Publishing Institute (MDPI), 2015)
The anchoring effect on free-base carboxyphenyl porphyrin films using TiO2 microstructured columns as a host matrix and its influence on NO2 sensing have been studied in this work. Three porphyrins have been used: ...
Artículo
Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction
(Elsevier, 2022)
In this study, the promoting effect of rhenium addition as a co-dopant on Mo/ZSM-5 catalysts system has been analysed. Hence, bimetallic (Re-Mo/ZSM-5) catalysts have been synthesized using a sequential impregnation ...
Artículo
The dizinc bond as a ligand: A computational study of elongated dizinc bonds
(Elsevier, 2018)
Following the synthesis of [Zn 2 (η 2 -C 5 Me 5 ) 2 ] (in short [Zn 2 Cp ∗ 2 ]) many complexes of the directly bonded Zn-Zn unit were prepared and characterized, leading to the recognition of an isolobal analogy between ...
Artículo
Cationic (η5-C5Me4R)RhIII Complexes with Metalated Aryl Phosphines Featuring η4-Phosphorus plus Pseudo-Allylic Coordination
(American Chemical Society, 2018)
In this contribution we study experimentally and computationally some electrophilic cationic (η5-C5Me4R)RhIII complexes containing a cyclometalated bis(aryl) phosphine, PR′Ar2. The phosphine Ar groups feature methyl ...