scholarly journals Activating molecular oxygen with Au/CeO2 for the conversion of lignin model compounds and organosolv lignin

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 31070-31077
Author(s):  
Wu-Lin Song ◽  
Qingmeng Dong ◽  
Liang Hong ◽  
Zhou-Qi Tian ◽  
Li-Na Tang ◽  
...  

Au/CeO2 was demonstrated to be a high efficiency catalyst for the conversion of 2-phenoxyacetophenol (PP-ol) employing O2 as an oxidant and methyl alcohol as the solvent without using an erosive strong base or acid.

2017 ◽  
Vol 19 (19) ◽  
pp. 4538-4543 ◽  
Author(s):  
Jia-wei Zhang ◽  
Guo-ping Lu ◽  
Chun Cai

A MIL-100(Fe) supported Pd–Ni BMNP catalyst has been fabricated, and the catalyst exhibits superior catalytic performance toward intramolecular transfer hydrogenolysis of lignin model compounds and organosolv lignin.


2015 ◽  
Vol 51 (19) ◽  
pp. 4028-4031 ◽  
Author(s):  
Yingying Yang ◽  
Honglei Fan ◽  
Jinliang Song ◽  
Qinglei Meng ◽  
Huacong Zhou ◽  
...  

Ionic liquid can efficiently promote the transformation of lignin model compounds and organosolv lignin.


2015 ◽  
Vol 123 ◽  
pp. 155-163 ◽  
Author(s):  
Hannelore Konnerth ◽  
Jiaguang Zhang ◽  
Ding Ma ◽  
Martin H.G. Prechtl ◽  
Ning Yan

2018 ◽  
Vol 20 (6) ◽  
pp. 1270-1279 ◽  
Author(s):  
Li Zhao ◽  
Song Shi ◽  
Meng Liu ◽  
Guozhi Zhu ◽  
Min Wang ◽  
...  

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


2020 ◽  
Vol 56 (76) ◽  
pp. 11243-11246
Author(s):  
Shuyuan Li ◽  
Zhongkai Hao ◽  
Kaixuan Wang ◽  
Min Tong ◽  
Yanan Yang ◽  
...  

A novel and efficient strategy for the selective depolymerization of lignin model compounds and organosolv lignin via a visible-light-induced photocatalytic continuous-flow reactor was first developed by using perylene diimide (PDI) as a organocatalyst.


RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 84967-84973 ◽  
Author(s):  
Bo Zhang ◽  
Changzhi Li ◽  
Tao Dai ◽  
George W. Huber ◽  
Aiqin Wang ◽  
...  

Fast depolymerization of β-O-4 model compounds and organosolv lignin to aromatic chemicals over methyltrioxorhenium in ionic liquids without oxidant/reducing agent under microwave irradiation is developed.


2020 ◽  
Vol 16 ◽  
Author(s):  
Mahdieh Sharifi ◽  
Ramyakrishna Pothu ◽  
Rajender Boddula ◽  
Inamuddin

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.


2021 ◽  
Author(s):  
Guangyong Liu ◽  
Qian Wang ◽  
Dongxia Yan ◽  
Yaqin Zhang ◽  
Chenlu Wang ◽  
...  

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....


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