These catalysts are invariably converted to nanoparticles after the first run. Although these catalysts can be reused, there is no reason to use an expensive support based on immobilized ligands. This also does not protect the product from palladium contamination. Even more effort has gone into ...
Rare earth metals (the lanthanum series plus yttrium), are a group of elements that have found their way into most areas of modern life – from your smartphone and computer to medical devices, fiber optic cables, water treatment chemicals and catalysts. The use of rare earths in high-performa...
THE unique role that gold plays in society is to a large extent related to the fact that it is the most noble of all metals: it is the least reactive metal towards atoms or molecules at the interface with a gas or a liquid. The inertness of gold does not reflect a general inability ...
Other Uses:Silver’s reflective properties are harnessed in mirrors and coatings, enhancing image quality and light. Inchemical catalysts, silver speeds up reactions, with the chemical industry using around5%of global silver supply. Inwater purification systems, it ensures clean and safe water, demons...
The majority of on-road vehicles today are powered by internal combustion engines, which are, in most cases, burning petroleum-derived liquid fuels mixed with bio-components. The power to weight ratio of internal combustion engines combined with the high energy content of conventional fuels, which...
Our future depends on a transition away from fossil fuels. To map out a path, we need to get to grips with how, and why, the use of coal, gas and oil has risen to unsustainable levels. Most fossil fuels are consumed not by individuals, but by and through large technological systems,...
de Vries, illustrates the conclusion of their review article on "Why Does Industry Not Use Immobilized Transition Metal Complexes as Catalysts?" Much effort has gone into the immobilization of homogeneous catalysts in an attempt to create a catalyst that is easily removed and that can be reused ...
Heterodinuclear transition metalcomplexes with a direct metal–metalinteraction offer the potential of unique reactivity compared withmononuclear catalysts. Heterodinuclear Co–Zr complexes withphosphinoamide ligands bridging Co and Zr metal centers are effectiveprecatalysts for Kumada C–C bond coupling ...
In the present Perspective, we discuss the interest of MOFs in heterogeneous catalysis that derive from unique features present in these materials related with high porosity, large surface area, high content of transition metals and the presence of coordinatively unsaturated sites. After presenting ...
transition metalspeciationThis study concerns single-site heterogeneous photocatalysts, composed of isolated transition metals ions (single-sites) dispersed on silica-based supports, which can be used as photocatalysts. The first part gives the definition of single-site heterogeneous catalysts. The main ...