4.8 Article

Enhanced upgrading of corncob to furfuryl alcohol with a novel silica-supported SO42--TiO2 chemocatalyst and immobilized whole-cell biocatalyst

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GREEN CHEMISTRY
卷 25, 期 19, 页码 7764-7773

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d3gc01764h

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Chemobiocatalytic synthesis provides an effective approach for the transformation of biomass into high-value products. In this study, a novel and efficient route for the preparation of furfuryl alcohol from corncob was proposed, combining chemical and biological catalysis. The results demonstrated the successful conversion of furfural to furfuryl alcohol through the synergistic effect of catalysts and enzymes.
Chemobiocatalytic synthesis is an effective approach to transform biomass into high-value products. Here, a novel and efficient route was proposed toward the preparation of furfuryl alcohol from corncob. A novel silica-supported SO42--TiO2 catalyst was prepared to convert corncob into furfural at 170 degrees C for 30 min using microwave heating, achieving a furfural yield of 73.3%. For the bioreduction of furfural to fur-furyl alcohol, novel recombinant E. coli EF22 cells were successfully constructed and the most suitable parameters were identified. The immobilization was performed on E. coli EF22 to improve their stability and reusability and to determine the optimal parameters of the immobilization process. Subsequently, a chemobiocatalytic strategy combining the SO42--TiO2/SiO2 chemocatalyst and EF22@SA/Fe3O4 biocata-lyst was performed, achieving a furfuryl alcohol productivity of 0.5396 g FFAC per g xylan. This study not only provides a sustainable and efficient route for the synthesis of furfural and furfuryl alcohol but also highlights the applicability of chemobiocatalysis.

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