Abstract：
:The catalytic conversion of suspended LignoBoost Kraft lignin was performed in near-critical water using ZrO2/K2CO3 as the catalytic system and phenol as the co-solvent and char suppressing agent. The reaction temperature was varied from 290 to 370°C and its effect on the process was investigated in a continuous flow (1kg/h). The yields of water-soluble organics (WSO), bio-oil and char (dry lignin basis) were in the ranges of 5-11%, 69-87% and 16-22%, respectively. The bio-oil, being partially deoxygenated, exhibited higher carbon content and heat value, but lower sulphur content than lignin. The main 1-ring aromatics (in WSO and diethylether-soluble bio-oil) were anisoles, alkylphenols, catechols and guaiacols. The results show that increasing temperature increases the yield of 1-ring aromatics remarkably, while it increases the formation of char moderately. An increase in the yields of anisoles, alkylphenols and catechols, together with a decrease in the yield of guaiacols, was also observed.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Nguyen TDH,Maschietti M,Åmand LE,Vamling L,Olausson L,Andersson SI,Theliander Hdoi
10.1016/j.biortech.2014.06.051subject
Has Abstractpub_date
2014-10-01 00:00:00pages
196-203eissn
0960-8524issn
1873-2976pii
S0960-8524(14)00895-5journal_volume
170pub_type
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