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Mild Hydrothermal Degradation of Cotton Cellulose by using a Mixed-Metal-Oxide ZnO–ZrO2 Catalyst

Authors

  • Fang Yang,

    1. Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
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  • Gang Li,

    Corresponding author
    1. Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
    • Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
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  • Peng Gao,

    1. Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
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  • Xiao-Na Lv,

    1. Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
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  • Xiaofeng Sun,

    1. Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
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  • Zhi-Hua Liu,

    1. Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
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  • Hongxian Fan

    1. Hebei Provincial Key Lab of Green Chemical Technology & Highly Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130 (PR China), Fax: (+86) 022-26582443
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Abstract

This paper presents a process for the degradation of cotton cellulose in the presence of a mixed-metal-oxide ZnO–ZrO2 catalyst under mild hydrothermal conditions (463 K, 1.4 MPa). The main products include glucose, fructose, furfural, 5-hydroxymethylfurfural (HMF), and water-soluble oligosaccharides. The highest yield of HMF was 10.05 % at 473 K and the conversion ratio of cotton cellulose reached 81 % at 483 K. The desorption peak in ammonia-temperature programmed desorption (NH3-TPD) performed on the ZnO–ZrO2 catalyst was near the 463–473 K range for the degradation of cotton cellulose. The tetragonal phase structure of the ZnO–ZrO2 catalyst played an important role in lowering the temperature and pressure for the hydrothermal degradation of cotton cellulose.

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