Thermogravimetric(TG) and pyrolysis-gas chromatograph-mass spectrometer(Py-GC-MS) tests were used to measure cellulose,hemicellulose,and lignin concentrations and their mixtures for various mass ratios.The interactions among the three components of lignocellulosic biomass were then evaluated after they were catalytically fast pyrolyzed with a ZSM-5zeolite catalyst.The results show that although cellulose,hemicellulose,and lignin produced quite different primary pyrolysis products,they were converted to simi...