TY - JOUR
T1 - Understanding the stability of pyrolysis tars from biomass in a view point of free radicals
AU - He, Wenjing
AU - Liu, Qingya
AU - Shi, Lei
AU - Liu, Zhenyu
AU - Ci, Donghui
AU - Lievens, Caroline
AU - Guo, Xiaofen
AU - Liu, Muxin
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Fast pyrolysis of biomass has attracted increasing attention worldwide to produce bio-tars that can be upgraded into liquid fuels and chemicals. However, the bio-tars are usually poor in quality and stability and are difficult to be upgraded. To better understand the nature of the bio-tars, this work reveals radical concentration of tars derived from pyrolysis of two kinds of biomass. The tars were obtained by condensing the pyrolysis volatiles in 3s. It shows that the tars contain large amounts of radicals, at a level of 1016spins/g, and are able to generate more radicals at temperatures of 573K or higher, reaching a level of 1019spins/g at 673K in less than 30min. The radical generation in the tar samples is attributed to the formation of THF insoluble matters (coke), which also contain radicals. The radical concentrations of the aqueous liquids obtained in pyrolysis are also studied.
AB - Fast pyrolysis of biomass has attracted increasing attention worldwide to produce bio-tars that can be upgraded into liquid fuels and chemicals. However, the bio-tars are usually poor in quality and stability and are difficult to be upgraded. To better understand the nature of the bio-tars, this work reveals radical concentration of tars derived from pyrolysis of two kinds of biomass. The tars were obtained by condensing the pyrolysis volatiles in 3s. It shows that the tars contain large amounts of radicals, at a level of 1016spins/g, and are able to generate more radicals at temperatures of 573K or higher, reaching a level of 1019spins/g at 673K in less than 30min. The radical generation in the tar samples is attributed to the formation of THF insoluble matters (coke), which also contain radicals. The radical concentrations of the aqueous liquids obtained in pyrolysis are also studied.
KW - Bio-tars
KW - Biomass
KW - Pyrolysis
KW - Radicals
UR - https://ezproxy2.utwente.nl/login?url=https://library.itc.utwente.nl/login/2014/isi/lievens_und.pdf
U2 - 10.1016/j.biortech.2014.01.063
DO - 10.1016/j.biortech.2014.01.063
M3 - Article
C2 - 24507874
AN - SCOPUS:84899077941
SN - 0960-8524
VL - 156
SP - 372
EP - 375
JO - Bioresource technology
JF - Bioresource technology
ER -