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Preparation of clay-supported Sn catalysts and application to Baeyer-Villiger oxidation
被引:38
|作者:
Hara, Takayoshi
[1
]
Hatakeyama, Moriaki
[1
]
Kim, Arum
[1
]
Ichikuni, Nobuyuki
[1
]
Shimazu, Shogo
[1
]
机构:
[1] Chiba Univ, Dept Appl Chem & Biotechnol, Grad Sch Engn, Inage Ku, Chiba 2638522, Japan
关键词:
HYDROGEN-PEROXIDE;
KETONES;
BETA;
CATIONS;
D O I:
10.1039/c2gc16437j
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Clay-intercalated Sn catalysts were prepared by a conventional cation-exchange method and used for the Baeyer-Villiger oxidation of various ketones with hydrogen peroxide as an oxidant. The intercalation of monomeric Sn species into the clay interlayer was monitored by solid-state Li-7 MAS NMR. Solid-state Sn-119 MAS NMR and Sn K-edge XAFS analysis revealed that an isolated Sn species, such as [Sn-IV(OH)(x)(H2O)(5-x)]((4-x)+) (x = 0 3), was formed in the clay interlayers. Our clay-intercalated Sn catalysts showed extremely high performance in Bayer-Villiger oxidation and were also reusable without any significant loss of activity or selectivity.
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页码:771 / 777
页数:7
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