Abstract
Efficient production of clean biofuels using CO2-rich bio-oil-based syngas obtained from bio-oil steam reforming was performed over a Fe1.5Cu1Zn1Al1K0.117 catalyst. The effects of synthesis parameters (temperature, pressure, gas hourly space velocity) on the performance of the biofuel synthesis were investigated. The maximum biofuel yield reaches about 0.63 kg biofuels/(kgcata·h) with a contribution of 0.40 kg alcohols/(kgcata·h) and 0.23 kg liquid hydrocarbons/(kgcata·h). The content of C2+ alcohols (mainly C2–C6 alcohols) in the alcohols products is 87.04–91.15 wt%. Some important elementary steps involved in the biofuel synthesis, including the reverse water-gas shift reaction and methanation, were also investigated in detail.