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Research Progress in Clean and Efficient Separation of Lignin
  
DOI:10.11980/j.issn.0254-508X.2019.06.010
Key Words:lignin  fractionation  β-O-4 content  valorization  reaction activity
Fund Project:江苏省自然科学基金青年基金项目(BK20181051、BK20181052);江苏省生物质能源与材料重点实验室开放课题(JSBEM201810);江苏省制浆造纸重点实验室开放课题(KL201915)。
Author NameAffiliation
JIN Yongcan1,* 1. Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing, Jiangsu Province,210037 
GU Feng2,3 2. School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu Province, 224051
3. Jiangsu Provincal Key Lab of Biomass Engergy and Materials, Nanjing, Jiangsu Province, 210042 
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Abstract:Current lignin separation strategies basically fulfill the demand of the separation yield and purity of lignin, however, the potential of lignin high value application depends on its reactivity (usually referring to the β-O-4 content in separated lignin). The existing separation technologies are not good enough to protect the structural integrity of lignin during fractionation. The main reasons for the decrease or heterogeneity of lignin reaction activity in the separation process are as follows: the structure of lignin in raw materials is complex, the specific separation methods are various, and the intensity of separation conditions is severe. Focusing on the latter two points, this paper summarizes the existing lignin separation schemes, and puts forward the prospect of the development trend of lignin separation methods through the comparison of the existing ones.
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