A NEW RAPID TECHNIQUE FOR THE CHARACTERIZATION OF LIGNIN IN VASCULAR PLANTS - THERMOCHEMOLYSIS WITH TETRAMETHYLAMMONIUM HYDROXIDE (TMAH)

被引：227

作者：

CLIFFORD, DJ ^{[1
]}

CARSON, DM ^{[1
]}

MCKINNEY, DE ^{[1
]}

BORTIATYNSKI, JM ^{[1
]}

HATCHER, PG ^{[1
]}

机构：

[1] FUEL SCI PROGRAM,STATE COLL,PA 16801

来源：

ORGANIC GEOCHEMISTRY | 1995年 / 23卷 / 02期

关键词：

LIGNIN; TMAH; PYROLYSIS; CC-MS; DEGRADATION; DERIVATIZATION;

D O I：

10.1016/0146-6380(94)00109-E

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Flash pyrolysis in the presence of tetramethylammonium hydroxide (TMAH) has been utilized for the characterization of lignin in a gymnosperm (pine), angiosperm (alder), and nonwoody (Juncus effusus L.) vascular plant tissue. The gymnosperm tissue yielded primarily methylated guaiacyl derivatives resulting from cleavage of lignin beta-O-4 bonds and subsequent methylation of acidic hydroxy groups. The angiosperm tissue also yielded guaiacyl-type compounds in addition to an analogous suite of methylated syringyl lignin derivatives. The nonwoody angiosperm yielded methylated cinnamyl lignin derivatives in addition to methylated guaiacyl and syringyl compounds. Analysis of alder wood with this technique at a low temperature of 310 degrees C has demonstrated that the dominant reaction with TMAH is mainly a thermally assisted chemolytic degradation rather than degradation induced by pyrolytic bond cleavage. Accordingly, we now call the technique TMAH thermochemolysis.

引用

页码：169 / 175

页数：7

共 20 条

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