New catalyst paves way for cheap, renewable hydrogen
June 30, 2003 | Source: KurzweilAI
Scientists have developed a hydrogen-making catalyst that uses cheaper materials and yields fewer contaminants than do current processes, while extracting the element from common renewable plant sources.
In the June 27 issue of the journal Science, researchers at the University of Wisconsin at Madison report developing the catalyst from nickel, tin and aluminum and using it in a process called aqueous-phase reforming (APR), which converts plant byproducts to hydrogen. The process performs as well as current methods that use precious metals such as platinum, yet runs at lower temperatures and is much cleaner.
According to James Dumesic, one of the researchers, a substitute for platinum catalysts is essential for the success of hydrogen technology. “We had to find a substitute for platinum in our APR process for production of hydrogen, since platinum is rare and also employed in the anode and cathode materials of hydrogen fuel cells to be used in products such as cars or portable computers,” he said.