Production of aryl oxygen-containing compounds from catalytic pyrolysis of bagasse lignin over LaTi Fe1−O3

Abstract

Abstract A new approach, named production of aryl oxygen-containing compounds from the catalytic pyrolysis of bagasse lignin (BL) over perovskite oxide, was proposed. A series of LaTixFe1−xO3 (LTF-x) samples were prepared by the solid state reaction method. The crystal phase and morphology of LTF-x were characterized by XRD and SEM respectively. Catalytic pyrolysis performance of LTF-x was performed by TG-DTG and the distribution patterns of gaseous, liquid and solid products from BL was investigated using a fixed-bed micro-reactor. The optimal reaction conditions were determined: the pyrolysis temperature was 600 °C, the mass ratio of mBL:mLTF-0.2 was 3:1, the velocity of carrier gas was 100 ml·min−1. The gaseous products were mainly composed of CO2, CO, CH4 and CnHm (n = 2–4, m = 2n + 2 or m = 2n). The main aryl oxygen-containing compounds in liquid products were phenolics, guaiacols, syringols and phenylates, the rest were benzenes, furans, esters and carboxylic acid. The total contents of aryl oxygen-containing compounds were from 62% up to more than 72% under the action of the perovskite. Moreover, the LTF-0.2 sample had nice regenerability.