| Budget Amount *help |
¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000)
Fiscal Year 2018: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2016: ¥32,630,000 (Direct Cost: ¥25,100,000、Indirect Cost: ¥7,530,000)
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| Outline of Final Research Achievements |
Applying environmental in-situ transmission electron microscopy, we pursued the mechanism of gold catalysts at the oxidation of carbon monoxide at room temperature, combined with ab initio electronic computation. For a thin foil of nanoporous gold catalyst that includes numerous pores of nanometer in size, we found that Ag atoms of impurity on the surface of pores were oxidized to form a few atomic columns of silver oxide AgO spontaneously in both reaction and pure oxygen environments. In the reaction environment the atomic columns were structurally fluctuated, while in the pure oxygen environment the atomic columns were stabler. This result indicated that the nanoporous gold catalyst can be regarded as a reverse catalyst of the well-known supported nanoparticulate gold catalyst. It was concluded that the catalytically active atomic structure of gold catalyst can be structurally unified as the interfacial structure between gold and metal oxide.
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