Researchers
at the University of Delaware have received a $960,000 grant from the U.S.
Department of Energy (DOE) to identify low-cost, nano-sized catalysts—tiny
amounts of metal compounds—that can spur the chemical conversion of liquid
fuels into hydrogen for powering cars to heating homes.
The project, to be completed over
the next three years, is part of DOE’s effort to develop advanced technologies
that can supply future energy and transportation systems with affordable
hydrogen, with significantly reduced or near-zero emissions.
The UD research team will be the
first to demonstrate new “high throughput” methods of screening potentially
hundreds to thousands of metal compounds at the nano-scale--particles as
small as a few atoms in size--to reveal the most promising triggers for
converting liquid fuels to hydrogen.
Chemical engineers Dionisios Vlachos,
Jochen Lauterbach and Douglas Buttrey, all in the Center for Catalytic
Science and Technology in the UD College of Engineering, are leading the
research. The project also involves collaborators from Brookhaven National
Laboratory in Upton, N.Y. Brookhaven is one of 10 national laboratories
overseen and primarily funded by DOE.
“Most fuel cells for vehicular applications
and auxiliary power units require onboard the efficient, cheap, and environmentally
benign generation of high-quality hydrogen,” Vlachos, who is coordinating
the research, said.
“The overall objective of our work
is to develop a framework for the discovery of low-cost, robust and active
nano-catalysts that will enable efficient hydrogen production.”
The UD research team will use ammonia
as the fuel in their proof-of-concept research. In practice, a car or stationary
power generator would be fueled with ammonia, which would get chemically
converted to hydrogen, thanks to the tiny catalysts. The hydrogen would
then be supplied to a fuel cell, resulting in electricity.
Ammonia has a large storage capacity
of hydrogen, is easy to make into a liquid form, and is one of the most
abundant chemicals produced in the world due to its extensive use in fertilizers.
The scientists will explore a variety
of tiny catalysts formed from combinations of inexpensive metals, as well
try new techniques for fuel processing to avoid the poisoning of the catalysts
by minute factions of carbon monoxide, which are produced in current processing
methods.
The UD portion of the research, which
will be conducted in the state-of-the-art facilities in the Center for
Catalytic
Science and Technology, also will involve three postdoctoral researchers,
three graduate students and three undergraduates.
The applications of the clean energy
research could be far-ranging, from fueling cars to powering generators,
heating homes and replacing batteries in electronics for long-lasting,
lighter devices.
Additionally, new methods of making
catalysts could have other important impacts, according to Vlachos.
“Our research could result in the
reduction of carbon dioxide emissions, as well as lead to economic growth
of the U.S. chemical industry,” he noted.

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