Results 1 to 10 of about 13,910,228 (354)
The chemical state of complex uranium oxides [PDF]
Physical Review Letters, 2013 We report here the first direct observation of U(V) in uranium binary oxides and analyze the gradual conversion of the U oxidation state in the mixed uranium systems.
Butorin, S. M. +3 more
core +3 more sources
Oxidation state of Fe and Ti ions implanted in yttria-stabilized zirconia studied by XPS [PDF]
, 1991 The oxidation state of Fe and Ti ions implanted in yttria stabilized zirconia (YSZ) was studied by XPS (X-ray photoelectron spectroscopy) in combination with depth profiling using Ar+ sputtering.
Burggraaf, A.J., Hassel, B.A. van
core +13 more sources
Constructing multiple active sites in iron oxide catalysts for improving carbonylation reactions
Nature Communications, 2023 Surface engineering is a promising strategy to improve the catalytic activities of heterogeneous catalysts. Nevertheless, few studies have been devoted to investigate the catalytic behavior differences of the multiple metal active sites triggered by the ...
Shujuan Liu +6 more
doaj +1 more source
Oxidation states and ionicity [PDF]
Nature Materials, 2018 The concepts of oxidation state and atomic charge are entangled in modern materials science. We distinguish between these quantities and consider their fundamental limitations and utility for understanding material properties. We discuss the nature of bonding between atoms and the techniques that have been developed for partitioning electron density ...
Aron Walsh +4 more
openaire +6 more sources
A facile strategy for incorporation of PtCo alloy into UiO-66-NH2 for cinnamaldehyde hydrogenation
Catalysis Communications, 2023 As a material with multifunctional ligands, metal-organic frameworks (MOFs) can effectively regulate the electronic and geometric state of supported metal nanoparticles (MNPs).
Haiyu Shen +6 more
doaj +1 more source
Nature Communications, 2021 While solar-to-fuel conversion offers a renewable energy production strategy, photoelectrochemical water splitting requires further optimization.
Beibei Zhang +7 more
doaj +1 more source
Green Synthesis and Catalysis, 2022 We report the highly efficient conversion of readily available biomass-derived polyols with amines to valuable furfurylamines or β-amino alcohols compounds using ruthenium catalysis.
Le Jia +5 more
doaj +1 more source
Nature Communications, 2021 Catalyst deactivation caused by the aggregation of active metal species poses great challenges for supported metal catalyzed solid-liquid reactions. Here, the authors develop a hypercrosslinked polymer integrated with N-heterocyclic carbene (NHC) as ...
Chengtao Yue +5 more
doaj +1 more source
Chemodivergent transformations of amides using gem-diborylalkanes as pro-nucleophiles
Nature Communications, 2020 Amides are versatile synthetic building blocks, however the general stability of the amide bond makes its selective transformation challenging. Here, the authors report a chemodivergent transformation of primary, secondary and tertiary amides by using 1 ...
Wei Sun +5 more
doaj +1 more source
Applied Sciences, 2021 In order to evaluate the local environmental risk deriving from coal transport and burning, 30 soil samples were collected along the coal conveyor belt and around the coal-burning power plant Federico II of Brindisi (Apulia, southern Italy).
Danilo Migoni +3 more
doaj +1 more source