Insights into the electrochemical degradation of phenolic lignin model compounds in protic ionic liquid-water system

2021 ◽  
Author(s):  
Guangyong Liu ◽  
Qian Wang ◽  
Dongxia Yan ◽  
Yaqin Zhang ◽  
Chenlu Wang ◽  
...  
Keyword(s):  
Water System ◽  
Value Added ◽  
Electrochemical Degradation ◽  
Aryl Ether ◽  
Model Compounds ◽  
Protic Ionic Liquid ◽  
Lignin Model Compounds ◽  
Mild Conditions ◽  
System P ◽  
Lignin Model

Cleavage of aryl ether (Caryl-O) bonds is crucial for conversion and value-added utilization of lignin and its derivatives, but remains extremely challenging under mild conditions due to strong Caryl-O linkages....

Lignin to Value-Added Chemical Synthesis

2020 ◽  
Vol 16 ◽  
Author(s):  
Mahdieh Sharifi ◽  
Ramyakrishna Pothu ◽  
Rajender Boddula ◽  
Inamuddin
Keyword(s):  
Ionic Liquids ◽  
Lignocellulosic Biomass ◽  
Academic Research ◽  
Power Saving ◽  
Value Added ◽  
Glycerol Ether ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Biomass Activity ◽  
Lignin Model

Background: There is a developing demand for innovation in petroleum systems replacements. Towards this aim, lignocellulosic biomass suggested as a possible sustainable source for the manufacturing of fuels and produced chemicals. The aims of this paper are to investigate different kinds of β-O-4 lignin model compounds for the production of value-added chemicals in presence of ionic liquids. Especially, a cheap β-O-4 lignin model Guaiacol glycerol ether (GGE) (Guaifenesin) is introduced to produce valuable chemicals and novel products. Methods: Research related to chemical depolymerization of lignocellulosic biomass activity is reviewed, the notes from different methods such as thermal and microwave collected during at least 10 years. So, this collection provides a good source for academic research and it gives an efficient strategy for the manufacturing of novel value-added chemicals at an industrial scale. Results: This research presented that ionic liquid microwave-assisted is a power saving, cost efficient, fast reaction, and clean way with high selectively and purity for production of high value chemicals rather that conversional heating. Guaiacol and catechol are some of these valuable chemicals that is produced from β-O-4 lignin model compounds with high word demands that are capable to produce in industry scale. Conclusion: The β-O-4 lignin model compounds such as Guaiacol glycerol ether (GGE) (Guaifenesin) are good platform for developing food materials, perfumery, biorefinery, and pharmaceutical industry by ionic liquids-assisted lignin depolymerization method.

Selective cleavage of aryl ether bonds in dimeric lignin model compounds

RSC Advances ◽  
2016 ◽  
Vol 6 (22) ◽  
pp. 17880-17887 ◽  
Author(s):  
Guodian Zhu ◽  
Xinping Ouyang ◽  
Yun Yang ◽  
Tao Ruan ◽  
Xueqing Qiu
Keyword(s):  
Aryl Ether ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Lignin Model

Selective cleavage of β-O-4 bonds.

Unprecedented organocatalytic reduction of lignin model compounds to phenols and primary alcohols using hydrosilanes

2014 ◽  
Vol 50 (7) ◽  
pp. 862-865 ◽  
Author(s):  
Elias Feghali ◽  
Thibault Cantat
Keyword(s):  
Primary Alcohols ◽  
Model Compounds ◽  
Efficient Catalyst ◽  
Lignin Model Compounds ◽  
Metal Free ◽  
Mild Conditions ◽  
Lignin Model

The first metal-free reduction of lignin model compounds is described. Using inexpensive PMHS and TMDS hydrosilanes as reductants, α-O-4 and β-O-4 linkages are reduced to primary alcohols and phenols under mild conditions using B(C6F5)3as an efficient catalyst.

scholarly journals Synthesis of Lignin Model Compounds for the Glyceraldehyde-2-aryl Ether Type of Structure.

1974 ◽  
Vol 28b ◽  
pp. 333-338 ◽  
Author(s):  
Lissela Berndtson ◽  
Kenneth Hedlund ◽  
Lennart Hemrå ◽  
Knut Lundquist ◽  
Curt R. Enzell ◽  
...  
Keyword(s):  
Aryl Ether ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Lignin Model
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