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Researchers detail new approach for finding catalysts to improve hydrogen production and storage and carbon dioxide reduction efforts

March 27, 2007 Share This!

RICHLAND, Wash. – After nearly 10 years of work, researchers are beginning to see the relationships between “global energy maps” of a material and its effectiveness as a catalyst. Pacific Northwest National Laboratory researcher Daniel DuBois described the models he and colleagues have developed to help predict and design better catalysts at the national meeting of the American Chemical Society.

These global energy maps detail the amount of energy it takes a variety of materials to get over the activation barrier and speed up a chemical reaction. Dubois and his team are applying this new approach to relevant problems such as how to make hydrogen from water. They have found a new catalyst that approaches the activity level of the enzyme hydrogenase, which is currently the fastest known catalyst to reduce water to its hydrogen component.

They are continuing to use the new method to discover a catalyst that is durable, fast acting and takes the minimum amount of energy to convert water to hydrogen. They are also looking for catalysts that will enhance hydrogen storage and carbon dioxide reduction.

The team continues to refine empirical models that will allow them to predict the energies of each intermediate catalytic step and develop a tool that provides far greater chances of identifying better catalysts than serendipity or simply tweaking materials that are already known to work to some degree.

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PNNL is a DOE Office of Science national laboratory that solves complex problems in energy, national security and the enironment, and advances scientific frontiers in the chemical, biological, materials, environmental and computational sciences. PNNL employs 4,200 staff, has a $750 million annual budget, and has been managed by Ohio-based Battelle since the Laboratoy's inception in 1965.

Tags: Energy, National Security

Interdisciplinary teams at Pacific Northwest National Laboratory address many of America's most pressing issues in energy, the environment and national security through advances in basic and applied science. Founded in 1965, PNNL employs 4,300 staff and has an annual budget of about $950 million. It is managed by Battelle for the U.S. Department of Energy. For more information, visit the PNNL News Center, or follow PNNL on Facebook, Google+, LinkedIn and Twitter.

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