摘要
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.
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.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第7期1149-1155,共7页
基金
supported by CMU, AFOSR, and NIOSH
