Are there any economical and developed methods for selective separation of these three plant polymers lignin, cellulose, hemicellulose in plant cells before pyrolysis?
Yes, the current focus of research is to separate lignin under mild conditions (e.g. cooking the plant cells / wood in ethanol-water or THF with tiny quantities of sulfuric acid and a choice of aldehyde). This way, lignin can be separated with its structure most similar to that in native plant cells. Then, 'cellulose+hemicellulose' and 'lignin' can be pyrolyzed separately.
1. Article Protection Group Effects During α,γ-Diol Lignin Stabilizatio...
2. Article Progress in the solvent depolymerization of lignin
Dear Ali Behrad Vakylabad thanks for posting this very interesting and relevant technical question on RG. Although we published two articles about lignin in the past, I would not call myself a proven expert in this field. Thus all I can do right now is suggest to you a few potentially useful articles. For example, please have a look at the following links:
Separation of Hemicellulose and Cellulose from Wood Pulp by Means of Ionic Liquid/Cosolvent Systems
Article Separation of Hemicellulose and Cellulose from Wood Pulp by ...
Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars
https://patents.google.com/patent/US5730837A/en
and
Simultaneous isolation of cellulose and lignin from wheat straw and catalytic conversion to valuable chemical products
Article Simultaneous isolation of cellulose and lignin from wheat st...
The third article is freely available as public full text right here on RG.
Good luck with your work!
- Badges
- Science method