THERMALLY ASSISTED HYDROLYSIS AND ALKYLATION OF LIGNINS IN THE PRESENCE OF TETRA-ALKYLAMMONIUM HYDROXIDES

被引:99
作者
MARTIN, F
DELRIO, C
GONZALEZVILA, FJ
VERDEJO, T
机构
[1] Instituto de Recursos Naturales y Agrobiología de Sevilla, C.S.I.C., 41080 Seville
关键词
MILLED WOOD LIGNINS; PYROLYSIS; PYROLYSIS-METHYLATION; THERMALLY ASSISTED HYDROLYSIS AND METHYLATION; TETRABUTYLAMMONIUM HYDROXIDE; TETRAMETHYLAMMONIUM HYDROXIDE;
D O I
10.1016/0165-2370(95)00892-I
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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.
引用
收藏
页码:1 / 13
页数:13
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