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2013年11月29日 Science& {' d. ]* v: M5 c9 X% ^7 `
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COVER Color-enhanced scanning electron micrograph of rust (iron oxide)
, J" | \7 h: y6 Z- son painted sheet metal (width of image field: 41.3 micrometers). When activated & W. t o* A7 l4 o) t
by a thin carbon layer doped with nitrogen atoms, iron oxide proves to be an : k. E/ R" l, R
efficient catalyst for selective hydrogenation of nitroarenes to anilines, a . Y2 \" T' z; R# [( B) U( S! d: {
process that previously required noble metals. See pages 1054 and 1073.
( |9 b5 K. @& F/ y+ BImage: Eye of Science/Science Source
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