Low temperature microwave-assisted pyrolysis of wood sawdust for phenolic rich compounds: Kinetics and dielectric properties analysis.
Microwave-assisted pyrolysis of wood sawdust for phenolic rich compounds was carried out between 400 and 550°C in a batch reactor. An efficient preparation of liquid products was observed at 500°C with a yield of 58.50%, which was similar to conventional fast pyrolysis. The highest concentration of phenolic compounds in liquid product reached up to 78.7% (area) in which the alkoxy phenols contributed 81.8% at 500°C. Microwave thermogravimetric analysis using KAS method was used firstly to investigate the low-temperature pyrolytic behaviors and activation energy. The results indicated that effective pyrolytic range was 250-400°C and average activation energy was 42.78kJ/mol, which were 50-100°C and 50-100kJ/mol lower than conventional pyrolysis, respectively. Analysis on dielectric properties of pyrolytic products confirmed that accelerated pyrolysis and low temperature were attributed to the formation of instantaneous "hot spots".
['Luo|Hu|H|', 'Bao|Liwei|L|', 'Kong|Lingzhao|L|', 'Sun|Yuhan|Y|']
D003080:Cold Temperature D006358:Hot Temperature D007700:Kinetics D008872:Microwaves D010636:Phenols D012037:Refuse Disposal D013696:Temperature D014934:Wood
Wood sawdust Kinetics Dielectric properties Microwave thermogravimetric analysis (MW-TGA) Microwave-assisted pyrolysis (MAP)