The type of ethylene-conversion reaction mediated by chromium-based catalysts—polymerization, trimerization, or oligomerization—depends on the metal's oxidation state, according to researchers in ...
When the film was heated and annealed, oxygen made its way into the film, leading to a change in the structure. The nature of the chromium atoms, or their "oxidation state," also changes ...
Copyright AD-TECH; licensee AZoM.com Pty Ltd. This is an AZo Open Access Rewards System (AZo-OARS) article distributed under the terms of the AZo–OARS https://www ...
A new chromium-molybdenum-silicon alloy has overcome a decades-old trade-off between strength and stability. The alloy, developed by German researchers, has a rare combination of ductility at room ...