Synthesis-Controlled α- And β-Molybdenum Carbide for Base-Promoted Transfer Hydrogenation of Lignin to Aromatic Monomers in Ethanol

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Kejing Wu
  • Chunyan Yang
  • Yingming Zhu
  • Junbo Wang
  • Xueting Wang
  • Changjun Liu
  • Yingying Liu
  • Houfang Lu
  • Bin Liang
  • Yongdan Li

Organisaatiot

  • Sichuan University
  • Tianjin University

Kuvaus

Molybdenum carbide catalysts over activated carbon with different crystal phases were synthesized under controllable carburization atmospheres and temperatures for transfer hydrogenation of Kraft lignin in ethanol to aromatic monomers. Single α-MoC1-x and crystal transformation of α-MoC1-x to β-Mo2C are observed under a CH4/H2 mixture and H2 carburization atmospheres, respectively. The mixed crystal phases of α-MoC1-x and β-Mo2C with different crystallinities under a N2 carburization atmosphere exhibit higher activity with a maximum aromatic yield of 0.5163 g/g Kraft lignin when carburized at 700 °C. The dehydrogenation reaction and Kraft lignin hydrogenation are proposed to explain the synergistic effect of β-Mo2C, base, and α-MoC1-x for the base-promoted transfer hydrogenation process in ethanol, which is confirmed by in situ Fourier transform infrared analysis. This highly efficient process is suitable for the conversion of different lignin feedstock.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut20270-20281
Sivumäärä12
JulkaisuIndustrial and Engineering Chemistry Research
Vuosikerta58
Numero44
TilaJulkaistu - 6 marraskuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 39232778