Catalysis

Catalytic Conversion of Fossil Fuel Components and Biomass

Details

 
Catalytic Conversion​ of Cellulosic Biomass

Highly Selective and Complete Conversion of Cellobiose to Gluconic Acid over Au/Cs2HPW12O40 Nanocomposite Catalyst

The combination of Au nanoparticles with cesium phosphotungstic salt generates a highly efficient nanocomposite catalyst (Au/Cs2HPW12O40) that promotes the complete oxidation conversion of cellobiose with specific selectivity towards gluconic acid in water media (a high yield of 96.4%).  The phosphotungstate support plays multiple crucial roles in this reaction, which provides solid acid sites for hydrolysis and also modulates Au redox sites for selective oxidation. Meanwhile, it works as a heterogeneous supporting material of Au NPs, allowing the catalyst to be easily recycled and reused. The high gluconic acid selectivity is attributed to the strong interaction between phosphotungstic anions and Au NPs that results in the modulation of electronic structures at their interface. The findings in this work would inspire the development of novel heteropolyacid-based catalysts for the ultimate goal of direct and selective conversion of primitive biomass source, e.g. cellulose.


  •  ​​Jizhe Zhang, Xin Liu, Mohamed Nejib Hedhili ,Yihan Zhu, and Yu Han*, ChemCatChem 3 (2011), 1294-1298 (selected by Wiley as one of the hottest papers in Green and Sustainable Chemistry)​​
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