期刊
ACS CATALYSIS
卷 3, 期 4, 页码 647-654出版社
AMER CHEMICAL SOC
DOI: 10.1021/cs300754k
关键词
oxidation; saturated C-H bonds; metal-organic frameworks; gold; palladium; bimetallic catalysts
资金
- NSF of China [20936001, 21073065]
- NSF of Guangdong [S2011020002397, 10351064101000000]
- Ministry of Education of China [20120172110012]
- Fundamental Research Funds for the Central Universities [2011ZG0009]
Gold (Au) and palladium (Pd) nanoparticles dispersed on a zeolite-type metal-organic framework (i.e., MIL-101) were prepared via a simple colloidal method. The catalysts were characterized by powder X-ray diffraction, N-2 physical adsorption, atomic absorption spectroscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. Au and Pd were mostly in the form of bimetallic so alloys on the MIL-101 support. The Au-Pd/MIL-101 was active and selective in the oxidation of a variety of saturated (including primary, secondary, and tertiary) C-H bonds with molecular oxygen. For the liquid-phase oxidation of cyclohexane, cyclohexane conversion exceeding 40% was achieved (TOF: 19 000 h(-1)) with >80% selectivity to cyclohexanone and cyclohexanol under mild solvent free conditions. Moreover, the Au-Pd alloy catalyst exhibited higher reactivity than their pure metal counterparts and an Au + Pd physical mixture. The high activity and selectivity of Au-Pd/MIL-101 in cyclohexane aerobic oxidation may be correlated to the synergistic alloying effect of bimetallic Au-Pd nanoparticles.
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