Preparation and structure-property relationships of supported trimetallic PdAuAg catalysts for the selective hydrogenation of acetylene

详细信息    查看全文

• 作者：Junting Feng^a ; Yanan Liu^a ; Min Yin^a ; Yufei He^a ; Jiaying Zhao^a ; Jianhua Sun^b ; Dianqing Li^a ; ^{lidq@mail.buct.edu.cn}
• 关键词：Selective hydrogenation ; PdAuAg trimetallic catalyst ; Synergetic effect ; Mesocrystals ; Defect sites
• 刊名：Journal of Catalysis
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：344
• 期：Complete
• 页码：854-864
• 全文大小：2814 K
• 卷排序：344

文摘

Trimetallic PdAuAg catalysts with two different morphologies are prepared by a co-reduction method. Both of the trimetallic catalysts exhibit higher selectivity than mono- and bimetallic catalysts. Compared with the cuboctahedral catalyst, the mesocrystal catalyst exhibits higher activity and selectivity. Enhanced activity could be ascribed to the high concentration of defect sites. Increase of facet (1 1 1)/(1 0 0) ratio and Pd–C phase contribute to the improved selectivity.