Chemoselective methylation of phenolic hydroxyl group prevents quinone methide formation and repolymerization during lignin depolymerization
Abstract
Chemoselective blocking of the phenolic hydroxyl (Ar-OH) group by methylation was found to suppress secondary repolymerization and charring during lignin depolymerization. Methylation of Ar-OH prevents formation of reactive quinone methide intermediates, which are partly responsible for undesirable secondary repolymerization reactions. Instead, this structurally modified lignin produces more relatively low molecular weight products from lignin depolymerization compared to unmodified lignin. This result demonstrates that structural modification of lignin is desirable for production of low molecular weight phenolic products. This approach could be directed toward alteration of natural lignification processes to produce biomass that is more amenable to chemical depolymerization.
- Authors:
-
[1];
[1];
[2];
- Joint BioEnergy Institute, Emeryville, CA (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Joint BioEnergy Institute, Emeryville, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Joint BioEnergy Institute (JBEI), Emeryville, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1349690
- Alternate Identifier(s):
- OSTI ID: 1468340
- Report Number(s):
- PNNL-SA-122183
Journal ID: ISSN 2168-0485
- Grant/Contract Number:
- AC05-76RL01830; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Sustainable Chemistry & Engineering
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 5; Journal ID: ISSN 2168-0485
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; depolymerization; lignin; methylation; quinone methide; repolymerization
Citation Formats
Kim, Kwang Ho, Dutta, Tanmoy, Walter, Eric D., Isern, Nancy G., Cort, John R., Simmons, Blake A., and Singh, Seema. Chemoselective methylation of phenolic hydroxyl group prevents quinone methide formation and repolymerization during lignin depolymerization. United States: N. p., 2017.
Web. doi:10.1021/acssuschemeng.6b03102.
Kim, Kwang Ho, Dutta, Tanmoy, Walter, Eric D., Isern, Nancy G., Cort, John R., Simmons, Blake A., & Singh, Seema. Chemoselective methylation of phenolic hydroxyl group prevents quinone methide formation and repolymerization during lignin depolymerization. United States. https://doi.org/10.1021/acssuschemeng.6b03102
Kim, Kwang Ho, Dutta, Tanmoy, Walter, Eric D., Isern, Nancy G., Cort, John R., Simmons, Blake A., and Singh, Seema. Wed .
"Chemoselective methylation of phenolic hydroxyl group prevents quinone methide formation and repolymerization during lignin depolymerization". United States. https://doi.org/10.1021/acssuschemeng.6b03102. https://www.osti.gov/servlets/purl/1349690.
@article{osti_1349690,
title = {Chemoselective methylation of phenolic hydroxyl group prevents quinone methide formation and repolymerization during lignin depolymerization},
author = {Kim, Kwang Ho and Dutta, Tanmoy and Walter, Eric D. and Isern, Nancy G. and Cort, John R. and Simmons, Blake A. and Singh, Seema},
abstractNote = {Chemoselective blocking of the phenolic hydroxyl (Ar-OH) group by methylation was found to suppress secondary repolymerization and charring during lignin depolymerization. Methylation of Ar-OH prevents formation of reactive quinone methide intermediates, which are partly responsible for undesirable secondary repolymerization reactions. Instead, this structurally modified lignin produces more relatively low molecular weight products from lignin depolymerization compared to unmodified lignin. This result demonstrates that structural modification of lignin is desirable for production of low molecular weight phenolic products. This approach could be directed toward alteration of natural lignification processes to produce biomass that is more amenable to chemical depolymerization.},
doi = {10.1021/acssuschemeng.6b03102},
journal = {ACS Sustainable Chemistry & Engineering},
number = 5,
volume = 5,
place = {United States},
year = {Wed Mar 22 00:00:00 EDT 2017},
month = {Wed Mar 22 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
Solvation effect on binding modes of model lignin dimer compounds on MWW 2D-zeolite
journal, September 2019
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Recent Efforts to Prevent Undesirable Reactions From Fractionation to Depolymerization of Lignin: Toward Maximizing the Value From Lignin
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