Mo-doped Al2O3-ZrO2-based composite as catalyst for one-step production of alkyl-substituted monophenols from lignin via direct deoxygenation

Autor: Du, Fang-Li, Li, Yan-Ming, Xian, Xue-Quan, Lu, Bo, Huang, Gang, Tang, Pei-Duo, Lai, Jun-Xiang
Zdroj: Chemical Papers; 20240101, Issue: Preprints p1-14, 14p
Abstrakt: Abstract: Different reaction conditions on the conversion of lignin and monophenol yield were investigated under the catalysis of (5% Mo)-Al2O3-ZrO2; the maximum conversion rate (78.9%) and monophenol yield (31.9%) were observed at 350 °C and 0.2 g catalyst using iso-propanol, in 45 min. The GC–MS analysis revealed that the main alkyl-substituted phenols are 4-ethyl-phenol (17.7%), 4-methyl-phenol (2.303%), phenol (1.878%), etc. The 1H NMR and FT-IR results indicated the presence of alkyl-substituted phenols in liquefaction products, and the formation mechanism of alkyl-substituted phenols was also proposed. Graphic abstract:
Databáze: Supplemental Index
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