Characterization and storage stability analysis of bio-oil
生物油储存稳定性实验研究

A storage stability test was conducted on the bio-oil produced by fast pyrolysis of pine and corncob.The viscosity,water content and solids content of bio-oil increased after storage.However,there were no significant changes in the pH value,heating value and density of bio-oil.The quantitative analysis by GC/MS showed that the content of 1-hydroxy-2-propanone,acetic acid,and furfural were significant decreased.The content of 2-methoxy phenol,4-methyl-2-methoxy-phenol,and 4-methyl-phenol increased.13C NMR spectral analysis showed that the alkyl carbon and di-O-alkyl carbon content of bio-oil decreased after storage,while the content of aromatic and unsaturated carbon increased.Therefore,the aromaticity of bio-oil increased.