玉米芯和煤矸石在γ-Al2O3为载体催化剂作用下的热解行为

o-pyrolysis behaviors of corncob and coal gangue were studied in a fixed bed reactor. The effects of blending ration, temperature and additives on products were investigated. Results show that the liquid oil yields were observed higher than calculated value at coal gangue proportion of 20% and 40%, and corncob and coal gangue had synergistic effect during co-pyrolysis above 400℃. γ-Al2O3 and modified γ-Al2O3 have effect on product distributions and property. Adding γ-Al2O3 and modified γ-Al2O3 could make the liquid oil yield decrease, and the liquid oil yield with Co/γ-Al2O3 is the lowest. 1HNMR, 13CNMR and FTIR analysis indicated that during the co-pyrolysis, the contens of aliphatic compounds were increased and oxygenated compounds, aromatic ether and carbohydrates were decreased, which showed that liquid oil obtained from co-pyrolysis has a good property. Co/γ-Al2O3，PW12/γ-Al2O3，Mo/γ-Al2O3 and γ-Al2O3 also have important influences on the liquid oil property, and adding them could reduce the contents of undesirable components (carboxylic acids, ketones and aldehydes) and enhanced the contens of alkene and phenols compounds.