Gold clusters supported on alkaline treated TS-1 for highly efficient propene epoxidation with O-2 and H-2

作者：Huang Jiahui; Takei Takashi; Akita Tomoki; Ohashi Hironori; Haruta Masatake^*

来源：Applied Catalysis B: Environmental , 2010, 95(3-4): 430-438.

DOI：10.1016/j.apcatb.2010.01.023

• Propene epoxidation
• O-2/H-2 mixture
• TS-1
• Alkaline treatment
• Gold cluster
• H-2 efficiency

Gold could be deposited as clusters smaller than 2.0 nm in diameter on TS-1 by solid grinding (SG) of the support with dimethyl Au(III) acetylacetonate after TS-1 was pretreated in aqueous solution of alkaline metal hydroxides. While in C3H6 epoxidation with O-2 and H-2 mixture Au nanoparticles larger than 2.0 nm deposited on TS-1 without alkaline treatment gave a very low PO formation rate of 11 g(PO) kg(-1) h(-1), Au clusters on alkaline treated TS-1 presented a greatly enhanced rate as high as 137 g(PO) h(-1). which was comparable to the best data reported so far. In addition, very high H-2 efficiency reaching 47% could be obtained by gold clusters on alkaline treated TS-1.

• 出版日期2010-4-6