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Tag: catalysts

New Method Facilitates Fuel Cell Catalyst Research

While the cleaning of car exhausts is among the best known applications of catalytic processes, it is only the tip of the iceberg. Practically the entire chemical industry relies on catalytic reactions. Therefore, catalyst design plays a key role in improving these processes. An international team of scientists has now developed a concept, that elegantly […]

Stable Crystalline Porous Covalent Organic Frameworks

Covalent organic frameworks (COFs) are a class of porous polymers that enable the atomically precise incorporation of organic units into periodic structures, creating highly ordered π-columnar arrays and one-dimensional open channels. One significant structural feature is that they can be predesigned at both primary and high-order structure levels. COFs have emerged as a platform for […]

Inexpensive New Catalysts Can Be Fine-tuned

Material could replace precious metals and produce precisely controlled electrochemical reactivity. David L. Chandler, MIT News Office. Researchers at MIT and Lawrence Berkeley National Laboratory have developed a new type of catalyst that can be tuned to promote desired chemical reactions, potentially enabling the replacement of expensive and rare metals in fuel cells. The new […]

Insulator-to-metal Transition Of Vanadium Dioxide Explained In Study

When heated to just above room temperature, the electrical conductivity of vanadium dioxide (VO2) abruptly increases by a factor of 10,000. Experiments at Oak Ridge National Laboratory coupled with high-performance computation reveal how the unusually large lattice vibrations, which are the oscillations of atoms about their equilibrium positions, stabilize this highly conductive metallic phase. Achievement […]