Search results for "Rhenium"

showing 4 items of 244 documents

ReO as a Brønsted acidic modifier in glycerol hydrodeoxygenation : Computational insight into the balance between acid and metal catalysis

2023

A computational study for the competitive conversion of glycerol to 1,2-propanediol and 1,3-propanediol is presented, considering a two-step sequence of dehydration followed by hydrogenation. The elementary steps for dehydration, i.e., breaking of C–H followed by C–OH or vice versa, were studied computationally both on the Rh metal surface and the acid-modified ReOH–Rh surface in order to understand the role of the acid promoter. While the acid modifier can catalyze the C–OH cleavage, the activation energy for the C–H cleavage was found to be considerably smaller on both pure and acid-doped Rh(111) surfaces, and breaking the secondary C–H bond is kinetically favored over breaking the termin…

hydrogenolysistiheysfunktionaaliteoriadehydraushydrodeoxygenationglycerolrheniumlaskennallinen kemiareniumCatalysisheterogeneous catalysiskatalyytitkatalyysirhodiumPhysical and Theoretical Chemistrymetallitdensity functional theory
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Characterization of rhenium oxide films and their application to liquid crystal cells

2009

Rhenium trioxide exhibits high electronic conductivity, while its open cubic crystal structure allows an appreciable hydrogen intercalation, generating disordered solid phases, with protonic conductivity. Rhenium oxide thin films have been obtained by thermal evaporation of ReO3 powders on different substrates, maintained at different temperatures, and also by reactive magnetron sputtering of a Re metallic target. A comparative investigation has been carried out on these films, by using micro-Raman spectroscopy and x-ray diffraction. Two basic types of solid phases appear to grow in the films: a red metallic HxReO3 compound, with distorted perovskite structures, like in the bulk material, a…

structural and vibrational characterizationMaterials sciencePerrhenateInorganic chemistryGeneral Physics and Astronomychemistry.chemical_elementCrystal structureSputter depositionRheniumIndium tin oxidechemistry.chemical_compoundRhenium trioxidechemistryChemical engineeringLiquid crystalRhenium oxide filmsRhenium oxide films; structural and vibrational characterization; electro-optic response.electro-optic responsePerovskite (structure)Journal of Applied Physics
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CCDC 1873815: Experimental Crystal Structure Determination

2019

Related Article: Kristina S. Kisel, Alexei S. Melnikov, Elena V. Grachova, Antti J. Karttunen, Antonio Doménech-Carbó, Kirill Yu. Monakhov, Valentin G. Semenov, Sergey P. Tunik, Igor O. Koshevoy|2019|Inorg.Chem.|58|1988|doi:10.1021/acs.inorgchem.8b02974

tetrakis(mu-cyano)-tetrakis(22'-bipyridine)-dodecacarbonyl-platinum-tetra-rhenium bis(trifluoromethanesulfonate) unknown solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1431249: Experimental Crystal Structure Determination

2015

Related Article: J. Palion-Gazda, I. Gryca, B. Machura, Francesc Lloret, Miguel Julve|2015|RSC Advances|5|101616|doi:10.1039/C5RA21466A

trichloro-(26-bis(pyridin-2-yl)-35-bis(pyridin-2-yl)pyrazine)-rhenium acetonitrile solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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