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25-原子金纳米球和纳米棒催化性能的比较(英文) 被引量:1
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作者 Anindita DAS 《催化学报》 SCIE EI CAS CSCD 北大核心 2011年第7期1149-1155,共7页
The catalytic properties of two nanocluster catalysts with atomically precisely known structures,icosahedral two-shelled Au25(SC2H4Ph) 18 nanospheres and biicosahedral Au25(PPh3) 10(SC2H4Ph) 5Cl2 nanorods,were compare... The catalytic properties of two nanocluster catalysts with atomically precisely known structures,icosahedral two-shelled Au25(SC2H4Ph) 18 nanospheres and biicosahedral Au25(PPh3) 10(SC2H4Ph) 5Cl2 nanorods,were compared. Their catalytic performance in the two reactions of the selective oxidation of styrene and chemoselective hydrogenation of α,β-unsaturated benzalacetone was investigated. The catalytic activities of icosahedral Au25(SC2H4Ph) 18 nanospheres were superior to those of the bi-icosahedral Au25(PPh3) 10(SC2H4Ph) 5Cl2 nanorods for both reactions. The better catalytic performance of the Au25(SC2H4Ph) 18 nanospheres can be attributed to their unique core-shell(Au13/Au12) geometric structure that has an open exterior atomic shell and to their electronic structure with an electron-rich Au13 core and an electron-deficient Au12 shell. 展开更多
关键词 nanocluster catalyst icosahedral au25 biicosahedral au25 selective oxidation selective hydrogenation
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