VACUUM PYROLYSIS OF BARK FROM PINUS-PONDEROSA

被引：9

作者：

LOWARY, TL ^{[1
]}

RICHARDS, GN ^{[1
]}

机构：

[1] UNIV MONTANA,WOOD CHEM LAB,MISSOULA,MT 59812

来源：

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY | 1988年 / 8卷 / 03期

关键词：

Acids - Chromatographic Analysis--Gas - Polysaccharides;

D O I：

10.1080/02773818808070692

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

The inner and outer barks of ponderosa pine (P. ponderosa) have been pyrolyzed at 350°C in vacuum and the tars analyzed by gas chromatography after tri-o-methylsilylation. The nine major peaks in the gas chromatogram have been identified and quantified and it is concluded that all (except pinitol) originate predominantly from polysaccharide components of the barks. They account for up to 53% of the total tar. Removal of most of the metal ions from the barks by ion exchange with dilute acid has a dramatic influence on the tar constituents, e.g. increasing the yield of levoglucanosan from inner bark from 0.8% to 13%, which represents 31% of the original glucan content of the bark.

引用

页码：393 / 412

页数：20

共 33 条

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