نتایج جستجو برای: rhenium
تعداد نتایج: 1716 فیلتر نتایج به سال:
Ab initio MD and potential energy surface sampling has been used to study the rearrangement processes in carboranes and their derivatives. A new mechanism is found, in addition to those previously proposed. The fact that theoretical activation energies are lower than those observed experimentally, and the differing activity of technetium and rhenium complexes, are rationalised by orbital symmet...
As part of its responsibilities under various Acts of Parliament, MAFF Directorate of Fisheries Research has a duty to carry out a substantial programme of monitoring, surveillance and research in relation to the quality of the aquatic environment in and around the United Kingdom. In the course of that programme, a wide variety of methods of analysis are used for a wide variety of contaminants,...
Atomically thin rhenium disulphide (ReS2) is a member of the transition metal dichalcogenide family of materials. This two-dimensional semiconductor is characterized by weak interlayer coupling and a distorted 1T structure, which leads to anisotropy in electrical and optical properties. Here we report on the electrical transport study of mono- and multilayer ReS2 with polymer electrolyte gating...
Rhenium disulphide (ReS2) is a recently discovered new member of the transition metal dichalcogenides. Most impressively, it exhibits a direct bandgap from bulk to monolayer. However, the growth of ReS2 nanosheets (NSs) still remains a challenge and in turn their applications are unexplored. In this study, we successfully synthesized high-quality ReS2 NSs via chemical vapor deposition. A high-p...
Immobilized rhenium tricarbonyl complexes were embedded in ALD deposited ZrO2, and investigated by (time resolved) infrared spectroscopy. The initially solvent exposed molecules react on the change of their environment.
Over the past decade, there has been a steady growth in demand for rare metals, with rhenium being one of most highly demanded, but also expensive and difficult to obtain. The high is due its use as key component metallurgical alloys or catalysts used oil refining industry. aggregate facts causes profitability processing rhenium-containing mineral resources, which are copper substandard concent...
The decay of (187)Re to (187)Os (with a half-life of 42 billion years) provides a unique isotopic fingerprint for tracing the evolution of crustal materials and mantle residues in the convecting mantle. Ancient subcontinental mantle lithosphere has uniquely low Re/Os and (187)Os/(188)Os ratios due to large-degree melt extraction, recording ancient melt-depletion events as old as 3.2 billion yea...
Direct Experimental Support for the Catalytic Effect of Iron-Group Metals on Electrodeposition of Rhenium Adi Naor, Noam Eliaz,* Larisa Burstein, and Eliezer Gileadi** Biomaterials and Corrosion Laboratory, The Materials and Nanotechnologies Program, Wolfson Applied Materials Research Center, and School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Ra...
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