Jan-02-18
A new catalytic converter works at lower temperatures to capture emissions from modern cars more efficiently.
Traditional catalytic converters rely on the heat of the car’s engine to activate the ceramic tool that neutralizes the pollutants. But since modern car engines take longer to heat up, pollutants can slip past the device.
In response, a team from the University of Washington created a new device based on previous technology that traps platinum atoms on a cerium oxide surface. This common component in emissions control catalysts was then treated with steam at 1382°F, resulting in a catalyst that remained stable while also activating at low temperatures. According to co-author Abhaya Datye, the new catalyst would be particularly useful in hybrid cars that “go on and off all the time, with gases in the pipes that aren’t that hot anymore.”
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