Efficient catalytic conversion of corn stover to furfural and 5-hydromethylfurfural using glucosamine hydrochloride derived carbon solid acid in Ƴ-valerolactone

• Published in: Industrial crops and products 2021-03, Vol.161, p.113173, Article 113173
• Main Authors: Yang, Tao, Li, Wenzhi, Ogunbiyi, Ajibola T., An, Shengxin
• Format: Article
• Language: English
• Subjects: 5-HMF; Catalyst; Furfural; Heterogeneous catalysis; Recyclability
• ISSN: 0926-6690; 1872-633X
• DOI: 10.1016/j.indcrop.2020.113173

[Display omitted] •SO3H-NG-C was prepared from biomass-derived glucosamine hydrochloride.•53 % furfural and 17 % 5-HMF yields from corn stover were achieved simultaneously.•The used catalyst could be separated simply from corn stover residue via sieve.•The SO3H-NG-C maintained reasonable recyclability for corn stover conversion. A novel solid acid catalyst (SO3H-NG-C) was synthesized from biomass-derived glucosamine hydrochloride by carbonization, activation and sulfonation processes. The SO3H-NG-C was characterized by SEM, TEM, N2 adsorption-desorption, elemental analysis, XRD, FTIR, Py-IR and XPS to reveal its physical and chemical properties. The SO3H-NG-C was used as a catalyst for converting corn stover into furfural and 5-hydromethylfurfural (5-HMF) via a one-step process. The effects of reaction temperature and time, solvent types, water concentrations, corn stover concentration, catalyst loading and catalyst stability were investigated systematically. 53 % furfural yield and17 % 5-HMF yield were obtained from 200 mg corn stover at 190 °C in 80 min using 100 mg SO3H-NG-C in Ƴ-valerolactone (GVL). Moreover, the used catalyst was separated from corn stover residue via sieve, and the catalyst showed reasonable stability for corn stover conversion.