Thermally assisted hydrolysis and alkylation of lignins in the presence of tetra-alkylammonium hydroxides
Three different milled lignins isolated from bamboo, pine and beech, corresponding to the three different structural groups, have been subjected to pyrolysis in the presence of tetramethylammonium hydroxide (TMAH) and tetrabutylammonium hydroxide (TBAH). Pyrolysis of the lignins in the presence of TMAH releases the methyl esters and methyl ethers of the different lignin monomers. Several moieties bearing carboxylic acid groups, not previously detected using pyrolytic techniques, could be released from the three lignins, suggesting that the presence of these moieties in the lignin structure have been underestimated.
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| Main Authors: | , , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Elsevier
1995
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| Subjects: | Milled wood lignins, Pyrolysis, Pyrolysis-methylation, Thermally assisted hydrolysis and methylation, Tetrabutylammonium hydroxide, Tetramethylammonium hydroxide, |
| Online Access: | http://hdl.handle.net/10261/58818 http://dx.doi.org/10.13039/501100007273 |
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