The next issue of Science will report a study that explains the mechanism for oxygen release by cerium oxide. This material is an important catalyst that favors many fundamental reactions that have profound implications for energy storage and environmental issues. These reactions include, for example, the purification of polluted gases and the production of hydrogen as new energy vector for fuel cells. The present study could inspire the design of new efficient catalysts for producing a large variety of goods, e.g. plastic materials, fuels, fertilizers and drugs.
The mechanism of oxygen release was analyzed and described by studying the surfaces of cerium oxide (ceria). “Ceria-based materials are oxygen buffers, materials that allow to efficiently store or release oxygen, thus favoring a high catalytic activity and inducing a set of chemical reactions which would otherwise require higher pressures and temperatures” says Friedrich Esch (Laboratorio TASC INFM-CNR). “The production of more efficient catalysts is therefore of paramount importance for saving energy, increasing the safety of industrial processes, and reducing the environmental impact.”
Presently, most of the industrial processes employ heterogeneous catalysts, i.e. devices that are in a phase (solid), different from the one of the reactants (gases): “A typical example are exhaust catalysts capable of purifying the combustion gases” explains Stefano Fabris (National Simulation Center DEMOCRITOS INFM-CNR and SISSA). Most of the recent research has focused on the energy production from alternative sources, on the reduction of the environmental impact, and on the energy storage. To pursue these important objectives, new and more efficient catalysts are needed. “The design and production of these catalysts is clearly a priority issue and ceria-based materials are attracting a great deal of attention by the most advanced laboratories” says Paolo Fornasiero (Department of Chemistry at the University of Trieste, and INSTM).
Mauro Scanu | alfa
A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes
20.07.2018 | Science China Press
Future electronic components to be printed like newspapers
20.07.2018 | Purdue University
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences