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Chemistry and Industry of Forest Products ›› 2018, Vol. 38 ›› Issue (4): 69-73.doi: 10.3969/j.issn.0253-2417.2018.04.011

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Levulinic Acid Synthesis from Furfural Residue with Synergistic Effect of Catalyst and NaCl

LI Miao, LIU Qiumei, CAI Qinjie, ZHANG Suping   

  1. Laboratory of Coal Gasification and Energy and Chemical Engineering, Ministry of Education, East China University of Science and Technlolgy, Shanghai 200237, China
  • Received:2018-03-09 Online:2018-08-25 Published:2018-08-10

Abstract: The effect of four kinds of metal chlorides (FeCl3, LiCl, AlCl3 and ZnCl2) were compared for the preparation of levulinic acid(LA) with furfural residue as raw material using Brønsted acid combined with Lewis acid as catalyst, and NaCl as promoter. The process conditions for the preparation of levulinic acid were also optimized. Results showed that the conversion of furfural residue into levulinic acid was promoted by FeCl3. The dissolution of cellulose was promoted and the yield and selectivity of levulinic acid were improved by adding NaCl. The reaction conditions for the preparation of levulinic acid were optimized as the follows:temperature of 200℃, H2SO4 mass fraction of 3%, ratio of solution containing catalyst and furfural residue 6:1 (mL:g), FeCl3 addition amount of 1.8%, and NaCl addition amount of 7%. The levulinic acid yield of 69.18% and selectivity of 89.46% can be obtained at the optimum conditions, which were 15.3 and 21.9 percent point higher than that of without NaCl addition respectively.

Key words: furfural residue, FeCl3, NaCl, levulinic acid

CLC Number: