Firstly, 500 g of SiC particles were put in the quartz reactor to form a layer of absorbent bed. Then, the reactor was placed in the oven cavity. After connecting the inlet and outlet quartz tubes, the oven was turned on for the heating process. When the temperatures of the absorbent bed reached a designed level, the biomass samples were semi-continually dropped onto the hot SiC bed, while the microwaves oven cycles on and off every 15 seconds in order to improve the biomass heating, and maintain the set temperature of the absorbent bed. Samples of the gas product were collected during the process, while the liquid fraction and char samples were collected at the end of the experiment. The solid and liquid fraction yields were calculated from the weight of each fraction, while the gas yield was calculated by differences based on the mass balance.