Au@h-Al2O3 Analogic Yolk–Shell Nanocatalyst for Highly Selective Synthesis of Biomass-Derived D-xylonic Acid via Regulation of Structure Effects

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Publication Date


Subject: LCSH

Sugar acids, Xylose, Oxidation


Chemical Engineering | Chemistry


Selective oxidation of biomass-based monosaccharides into value-added sugar acids is highly desired, but limited success of producing D-xylonic acid has been achieved. Herein, we report an efficient catalyst system, viz., Au nanoparticles anchored on the inner walls 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 the adsorbent first adsorbed D-xylose. Then, the interface of Au nanoparticles and Al2O3 as active sites spontaneously dissociated O2, and the exposed Au nanoparticle surface as the catalytic site 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 investigation showed that Au@h- Al2O3 is an efficient catalyst with high stability and recyclability.


This is the authors' accepted manuscript of the article published in Green Chemistry. The published version can be found at http://dx.doi.org/10.1039/C8GC02618A



Publisher Citation

Ma, Jiliang, Zewei Liu, Junlong Song, Linxin Zhong, Dequan Xiao, Hongxia Xi, Xuehui Li, Run-Cang Sun, and Xinwen Peng (2018). "Au@ h-Al2O3 analogic yolk-shell nanocatalyst for highly selectively synthesis of biomass-derived D-xylonic acid via regulation of structure effect." Green Chemistry 20:5188-5195.

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