Topic
Tungsten
About: Tungsten is a research topic. Over the lifetime, 35225 publications have been published within this topic receiving 456213 citations. The topic is also known as: W & element 74.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, a study of helium retention and surface blistering with regard to helium dose, temperature, pulsed implantation, and tungsten microstructure was conducted to better understand what may occur at the first wall of an inertial fusion energy reactor.
88 citations
88 citations
TL;DR: In this paper, a tungstate overlayer is formed that is stable at loadings up to ca. two monolayers (20 wt % WO3/TiO2) at a calcination temperature of 923 K.
Abstract: Tungstated titania catalysts (WOx/TiO2) were prepared by wet impregnation of hydrous titanium oxide hydroxide. The influences on the catalyst structure of tungsten loading (in the range of 0−30 wt % WO3 supported on TiO2), calcination temperature (varied from 473 to 973 K), and the form of the applied tungstate precursor (ammonium metatungstate or ammonium monotungstate) were investigated by surface area measurements, X-ray diffraction, thermal analysis, temperature-programmed reduction, vibrational and UV/vis spectroscopy, and X-ray absorption spectroscopy. The data show that tungsten loadings giving higher than monolayer coverage of the TiO2 and the application of a high-surface-area titania precursor lead to new structural properties of the surface tungstate phase. A tungstate overlayer is formed that is stable at loadings up to ca. two monolayers (20 wt % WO3/TiO2) at a calcination temperature of 923 K. Two tungstate species are characterized by two WO bands in the vibrational spectra. One tungstate s...
88 citations
TL;DR: Tungsten-substituted mesoporous SBA-15 materials have been successfully synthesized in a one-step co-condensation sol-gel method.
88 citations
TL;DR: In this paper, an electron beam facility was used to simulate ELM-like heat loads with ITER relevant power densities (≈ 0.5 ǫ/m2) and pulse duration (0.5 ) at the same time additional SSHL was applied to obtain different base temperatures.
88 citations