Journal
GREEN CHEMISTRY
Volume 15, Issue 1, Pages 230-235Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2gc36618e
Keywords
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Funding
- NSF of China [20803024, 20936001, 21073065]
- NSF of Guangdong [S2011020002397, 10351064101000000]
- program for New Century Excellent Talents in Universities [NCET-08-0203]
- Fundamental Research Funds for the Central Universities [2011ZG0009]
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Highly dispersed palladium nanoparticles were deposited on an acidic MOF (MIL-101) by using a simple colloidal method. The resulting Pd/MIL-101 catalyst was highly active in the liquid-phase aerobic oxidation of a wide range of alcohols including benzyl, allylic, aliphatic and heterocyclic alcohols as well as diols, affording the desired oxidation products in high yields under base-free and mild conditions. The catalyst was shown to be able to efficiently catalyze aerobic oxidation even at ambient temperature using air instead of pure O-2. The solvent-free oxidation of benzyl alcohol gave a remarkably high turnover frequency (TOF) of approximately 16 900 h(-1). However, the catalytic activity was significantly suppressed when ethylenediamine was grafted on the uncoordinated Cr sites of the MIL-101 support, which suggests that the open Cr sites might play an important role in promoting the oxidation of alcohols in the present catalytic system.
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