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Science 16 November 2001:
Vol. 294. no. 5546, pp. 1471 - 1472
DOI: 10.1126/science.1066253
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Perspectives

SURFACE SCIENCE:
Catalysts Under Pressure

Charles T. Campbell

Recent technical advances are enabling catalysts to be studied under reactive conditions. In his Perspective, Campbell highlights such an in situ study by Hansen et al., who show how barium promotes the activity of a ruthenium catalyst that catalyzes the ammonia synthesis reaction. Their approach should be widely applicable to studies of catalysts, promising exciting advances in the next few years in our understanding of catalysis.

The author is in the Chemistry Department, Box 351700, University of Washington, Seattle, WA 98195-1700, USA. E-mail: campbell{at}chem.washington.edu

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