image: Single atoms of palladium in a copper surface catalyze the selective hydrogenation of acetylene to ethylene. This image relates to a paper that appeared in the March 9, 2012, issue of Science, published by AAAS. The paper, by G. Kyriakou at Tufts University in Medford, Mass., and colleagues was titled, "Isolated Metal Atom Geometries as a Strategy for Selective Heterogeneous Hydrogenations." view more
Credit: Image © <i>Science</i>/AAAS