Catalytic pyrolysis of guaiacol

as a model compound of biomass

was conducted over ZSM-5 in a fixed-bed reactor. The effects of temperature

weight hourly space velocity and partial pressure on the yield and the selectivity of product were investigated and the coked ZSM-5 were characterized. The results indicated that the main products of guaiacol catalytic pyrolysis were phenolic compounds

followed by aromatic hydrocarbons. Temperature has a significant influence on the product distribution. A certain amount of coke deposition on the catalyst is useful in improving the yield of olefins and aromatic hydrocarbons. Based on the product distribution

the catalytic reaction pathway was speculated to be the removal methoxy group to form phenols with further aromatization to form aromatic hydrocarbons. The results provide a theoretical basis for the research of the mechanism of biomass catalytic pyrolysis.