ZHANG Qian, LI Hui, WEI Ligang, et al. Effect of recycle of ionic liquid on its performance of white pine lignin extraction[J]. CIESC Journal, 2013, (S1): 124-127.
ZHANG Qian, LI Hui, WEI Ligang, et al. Effect of recycle of ionic liquid on its performance of white pine lignin extraction[J]. CIESC Journal, 2013, (S1): 124-127.DOI: 10.3969/j.issn.0438-1157.2013.z1.018.
This paper investigated the recycling of ionic liquid-[Bmim]Cl in the extraction of white pine lignin. The extraction condition as following: the ratio of solvent to pine powder was 10∶1
ionic liquid concentration was 60%
the extraction is at 150℃ for 2 h. The results showed that ionic liquid could be recycled after the extraction of white pine lignin
but the sawdust mass loss
the holocellulose content in the residue wood chip and ionic liquid lignin extraction rate were all influenced by the recycling of the solvents. The UV and FT-IR spectrum were used to determine the chemical structure of the extraction materials. Through the comparison with mill wood lignin
there exist characteristic functional groups of lignin. The SEM analysis was used to investigate the surface change of the wood before and after extraction