期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 119, 期 32, 页码 18140-18148出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b01357
关键词
-
资金
- National Science Foundation (CBET) [0747646]
- U.S. Department of Energy, Office of Science, and Office of Basic Energy Sciences
- U.S. DOE [DE-ACO2-06CH11357, GU-20770, GU-25167]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0747646] Funding Source: National Science Foundation
Pd-Ag alloy catalysts with very dilute amounts of Pd were synthesized. EXAFS results demonstrated that when the concentration of Pd was as low as 0.01 wt %, Pd was completely dispersed as isolated single atoms in Ag nanoparticles. The activity for the hydrogenation of acrolein was improved by the presence of these isolated Pd atoms due to the creation of sites with lower activation energy for H-2 dissociation. In addition, for the same particle size, the 0.01% Pd/8% Ag alloy nanoparticles exhibited higher selectivity than their monometallic counterparts, suggesting that the Pd atom may act as a site for the favorable bonding of the acrolein molecule for facile hydrogenation of the aldehyde functionality.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据