Oxidative cleavage of β-O-4 bonds in lignin model compounds with a single-atom Co catalyst

2019 ◽  
Vol 21 (8) ◽  
pp. 1974-1981 ◽  
Author(s):  
Sijie Liu ◽  
Lichen Bai ◽  
Antoine P. van Muyden ◽  
Zhangjun Huang ◽  
Xinjiang Cui ◽  
...  
Keyword(s):  
Oxidative Cleavage ◽  
Single Atom ◽  
Model Compounds ◽  
Co Catalyst ◽  
Lignin Model Compounds ◽  
Metal Centers ◽  
Active Metal ◽  
Lignin Model

Single-atom catalysts are emerging as primary catalysts for many reactions due to their 100% utilization of active metal centers leading to high catalytic efficiencies.

A multicentre synergistic polyoxometalate-based metal–organic framework for one-step selective oxidative cleavage of β-O-4 lignin model compounds

2020 ◽  
Vol 22 (1) ◽  
pp. 248-255 ◽  
Author(s):  
Hong-Rui Tian ◽  
Yi-Wei Liu ◽  
Zhong Zhang ◽  
Shu-Mei Liu ◽  
Tian-Yi Dang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Metal Organic Framework ◽  
Value Added ◽  
Oxidative Cleavage ◽  
Model Compounds ◽  
Co Catalyst ◽  
Lignin Model Compounds ◽  
Metal Organic ◽  
One Step ◽  
Lignin Model

NENU-MV-5 as a heterogeneous catalyst without any co-catalyst, one-step selective oxidative cleavage of lignin models to high-value-added aromatics in a single solvent was achieved by synergistic effect of VIV–O–VV and CuI using O2 as oxidant.

Covalent triazine framework catalytic oxidative cleavage of lignin models and organosolv lignin

2018 ◽  
Vol 20 (6) ◽  
pp. 1270-1279 ◽  
Author(s):  
Li Zhao ◽  
Song Shi ◽  
Meng Liu ◽  
Guozhi Zhu ◽  
Min Wang ◽  
...  
Keyword(s):  
Oxidative Cleavage ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Metal Free ◽  
Organosolv Lignin ◽  
Lignin Model ◽  
Covalent Triazine Framework

CTFs were used as effective metal-free catalysts for the oxidative cleavage of lignin model compounds and organosolv lignin.

scholarly journals Iron-catalysed oxidative cleavage of lignin and β-O-4 lignin model compounds with peroxides in DMSO

2015 ◽  
Vol 17 (11) ◽  
pp. 5001-5008 ◽  
Author(s):  
Jakob Mottweiler ◽  
Torsten Rinesch ◽  
Claire Besson ◽  
Julien Buendia ◽  
Carsten Bolm
Keyword(s):  
Oxidative Cleavage ◽  
Iron Catalysts ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Lignin Model

Simple FeCl3-derived iron catalysts are used for the cleavage of lignin and β-O-4 lignin model compounds.

Mechanistic studies on the VO(acac)2-catalyzed oxidative cleavage of lignin model compounds in acetic acid

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110229-110234 ◽  
Author(s):  
Yangyang Ma ◽  
Zhongtian Du ◽  
Fei Xia ◽  
Jiping Ma ◽  
Jin Gao ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Reaction Pathway ◽  
Aerobic Oxidation ◽  
Oxidative Cleavage ◽  
Mechanistic Studies ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Lignin Model ◽  
Selective Aerobic Oxidation ◽  
Catalyzed Oxidation

Selective aerobic oxidation has provided a promising approach for breaking lignin into smaller aromatics. Here, the reaction pathway of VO(acac)2-catalyzed oxidation of lignin model 2-phenoxy-1-phenylethanol in acetic acid was studied.

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.

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