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Au@h-Al2O3 analogic yolk-shell nanocatalyst for highly selectively synthesis of biomass-derived D-xylonic acid via regulation of structure effect

Abstract

Selective oxidation of biomass-based monosaccharides into value-added sugar acids is highly desired, yet limited success of producing D-xylonic acid has been achieved. Here, we report an efficient catalyst system, Au nanoparticles anchoring on the inner wall of hollow Al2O3 nanospheres (Au@h-Al2O3), which could catalyze the selective oxidation of D-xylose into D-xylonic acid under base-free conditions. The mesoporous Al2O3 shell as adsorption sites first adsorbed D-xylose, the interface of Au nanoparticles and Al2O3 as active sites spontaneously dissociated O2, and the exposed Au nanoparticles surface as catalytic sites drove the transformation. With this catalyst system, the valuable D-xylonic acid was produced with excellent yields in the aerobic oxidation of D-xylose. Extensive works showed that the Au@h-Al2O3 is an efficient catalyst with highly stability and recycling.

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Publication details

The article was received on 17 Aug 2018, accepted on 26 Sep 2018 and first published on 03 Oct 2018


Article type: Paper
DOI: 10.1039/C8GC02618A
Citation: Green Chem., 2018, Accepted Manuscript
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    Au@h-Al2O3 analogic yolk-shell nanocatalyst for highly selectively synthesis of biomass-derived D-xylonic acid via regulation of structure effect

    J. Ma, Z. Liu, J. Song, L. Zhong, D. Xiao, H. Xi, X. Li, R. Sun and X. Peng, Green Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8GC02618A

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