Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 19, Issue 42, Pages 14215-14223Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201301735
Keywords
5-hydroxymethylfurfural; biomass; gold; nanostructures; oxidation
Categories
Funding
- National Natural Science Foundation of China [20803074, 21233008, 21203180]
- Main Direction Program of Knowledge Innovation of Chinese Academy of Science [KSCX2-EW-G-5]
Ask authors/readers for more resources
Au nanoclusters with an average size of approximately 1nm size supported on HY zeolite exhibit a superior catalytic performance for the selective oxidation of 5-hydroxymethyl-2-furfural (HMF) into 2,5-furandicarboxylic acid (FDCA). It achieved >99% yield of 2,5-furandicarboxylic acid in water under mild conditions (60 degrees C, 0.3MPa oxygen), which is much higher than that of Au supported on metal oxides/hydroxide (TiO2, CeO2, and Mg(OH)(2)) and channel-type zeolites (ZSM-5 and H-MOR). Detailed characterizations, such as X-ray diffraction, transmission electron microscopy, N-2-physisorption, and H-2-temperature-programmed reduction (TPR), revealed that the Au nanoclusters are well encapsulated in the HY zeolite supercage, which is considered to restrict and avoid further growing of the Au nanoclusters into large particles. The acidic hydroxyl groups of the supercage were proven to be responsible for the formation and stabilization of the gold nanoclusters. Moreover, the interaction between the hydroxyl groups in the supercage and the Au nanoclusters leads to electronic modification of the Au nanoparticles, which is supposed to contribute to the high efficiency in the catalytic oxidation of HMF to FDCA.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available