Selective hydrogenation of crotonaldehyde over Au nanoparticles confined in APTS-functionalized mesoporous silicas
Au-containing SBA-15 catalysts were prepared by the conventional wet impregnation method, two-solvent method and grafting method, respectively. The effect of the preparation method, resulting in different Au particle size and metal-support interaction, has been investigated in liquid phase hydrogenation of crotonaldehyde. It is found that the overall activity and selectivity to crotyl alcohol are effectively enhanced after incorporation of Au nanoparticle to SBA-15 by the grafting method. Over Au/APTS-SBA-15, the maximum yield of crotyl alcohol amounts to 51.7％, and the corresponding selectivity is as high as 53.6％. Based on the characterizations, the superior catalytic activity and selectivity are attributed to the smaller Au nanoparticles and the electronic interaction between APTS and Au, respectively.
Y. Pei P.-J. Guo L.-J. Zhu S.-R. Yan M.-H. Qiao K.-N. Fan
Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）