The mineral cryptomelane holds promise to absorb the toxic sulfur oxides that can degrade the emission control systems on diesel vehicles. Pacific Northwest National Laboratory researchers have identified the potential of using cryptomelane to trap sulfur dioxide and sulfur trioxide from diesel engine emissions on monolith supports – sturdy honeycombed structures composed of small parallel channels.
Cryptomelane has a very high capacity for absorbing sulfur dioxide – more than 10 times as high as those of standard metal oxide-based absorbents. Finding a way to capture sulfur is important since most fuels have a sulfur content that is harmful to the environment, clogs emissions control devices or damages fuel cells.
PNNL researchers tested cryptomelane under diesel engine conditions that are being proposed to trap nitrogen oxides – the most dangerous component of diesel exhaust. Under those conditions, including high temperatures, the cryptomelane maintains its very high sulfur dioxide capacity. These studies indicate that cryptomelane can be used to protect the nitrogen oxides traps from the sulfur oxide that degrades them under these conditions.
Susan Bauer | EurekAlert!
Despite government claims, orangutan populations have not increased. Call for better monitoring
06.11.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Increasing frequency of ocean storms could alter kelp forest ecosystems
30.10.2018 | University of Virginia
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
Physicists at ETH Zurich demonstrate how errors that occur during the manipulation of quantum system can be monitored and corrected on the fly
The field of quantum computation has seen tremendous progress in recent years. Bit by bit, quantum devices start to challenge conventional computers, at least...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
13.11.2018 | Life Sciences
13.11.2018 | Life Sciences
13.11.2018 | Awards Funding