(534b) Biofuel Production and Kinetics Study of Catalytic Microwave Pyrolysis of Douglas Fir Pellet Over Activated Carbon Supported Metal Catalyst

The presented study is aiming to improve the quality of bio-oils by catalytic upgrading of pyrolysis oil from microwave pyrolysis of biomass using activated carbon (AC) supported metal catalyst.  A central composite experimental design (CCD) was used to optimize the reaction condition of this process. The effects of reaction temperature and reaction time on product yields were investigated. GC/MS analysis indicated that the main chemical compounds of bio-oils were furans, phenols, guaiacols, and ketones/ethers which were in the range of 80-87% of bio-oils for most of the samples. The ketones/ethers mainly composed by 2-cyclopen-1-one and straight chain ethers were increased up to about 38% of bio-oil, and the phenols increased significantly accompanying with the decrease of guaiacols in comparison with raw biomass pyrolysis. Thermogrametric analysis (TGA) was used to analyze the thermal behavior or Douglas fir pyrolysis, and the kinetic parameters were investigated using thermogrametric analysis (TGA) data and compared with catalytic microwave pyrolysis of Douglas fir in this process, the activation energy of Douglas fir pyrolysis in this process was remarkable lower than conventional TGA pyrolysis of Douglas fir. And the reaction mechanism of this process was analyzed.