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Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (3): 49-56.doi: 10.3969/j.issn.0253-2417.2019.03.007

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Preparation of Methyl Lactate from Glucose Using SnO2-Pt/γ-Al2O3 Catalyst

Zhen WANG1,2(),Yuanbo HUANG1,2,Yunwu ZHENG1,2,Jida WANG1,2,Zhifeng ZHENG1,3,*()   

  1. 1. National-Local Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources; Key Laboratory for Highly-Efficient Utilization of Forest Biomass Resources in the Southwest China, National Forestry and Grassland Administration; Yunnan Provincial International Joint Research Center for Bioenergy, Southwest Forestry University, Kunming 650224, China
    2. School of Materials Science & Engineering, Southwest Forestry University, Kunming 650224, China
    3. Xiamen Key Laboratory of High-valued Conversion Technology of Agricultural Biomass; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass; College of Energy, Xiamen University, Xiamen 361102, China
  • Received:2019-02-01 Online:2019-06-28 Published:2019-06-26
  • Contact: Zhifeng ZHENG E-mail:wangzhen92517@163.com;zhifeng.zheng@xmu.edu.cn
  • Supported by:


SnO2-Pt/γ-Al2O3 catalysts were prepared by impregnation method using γ-Al2O3 as supporter. The effects of reaction parameters, including reaction temperature, reaction time and amount of catalyst, on the catalytic conversion of glucose to methyl lactate(MLA) were investigated. The reusability of the catalysts and the scale-up experiments were also explored. SnO2-Pt/γ-Al2O3 catalysts were characterized by scanning electron microscopy(SEM), X-ray photoelectron spectroscopy(XPS), X-ray diffraction(XRD), nitrogen adsorption-desorption, temperature programmed desorption(NH3-TPD). The results showed that the metal Pt and SnO2 were uniformly dispersed on the γ-Al2O3 supporter. The catalyst system had the distribution of B and L acid sites at the same time. The surface area was 117.08 m2/g, the pore volume was 0.23 cm3/g, and the average pore diameter was 6.54 nm. SnO2-Pt/γ-Al2O3 exhibited high catalytic activity with the conversion of 92.63% for glucose and the selectivity of 20.08% for glucose 1 g, methyl lactate when the catalyst dosage 10%, the ratio of glucose to methanol 1:10(g:mL), the reaction temperature 220℃ and the reaction time 10 h. The catalyst exhibited good reusability and amplification stability. The conversion of glucose and selectivity of methyl lactate were 88.43% and 19.27% after reusing for three times, 86.27% and 18.71% respectively when the dosage of materials increased 10 times.

Key words: methyl lactate, SnO2-Pt/γ-Al2O3, support, glucose, methanol

CLC Number: