New lipophilic components of pitch deposits from an Eucalyptus globulus ECF bleached kraft pulp mill

被引：25
|
作者：
Freire, CSR [1 ]
Silvestre, AJD [1 ]
Pereira, CCL [1 ]
Neto, CP [1 ]
Cavaleiro, JAS [1 ]
机构：
[1] Univ Aveiro, Dept Chem, P-3810193 Aveiro, Portugal
来源：
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY | 2002年 / 22卷 / 01期
关键词：
Eucalyptus globulus; Chlorine dioxide; kraft pulp bleaching; pitch; oxidized sterols; alpha-hydroxyfatty acids; omega-hydroxyfatty acids;
D O I：
10.1081/WCT-120004434
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 chemical composition of three pitch samples coming from an Eucalyptus globulus ECF bleached kraft pulp mill was studied by GC-MS. All samples are rich in fatty acids, including several omega- and alpha-hydroxyfatty acids and several oxidation products of beta-sitosterol, such as 5,6-epoxy-24-ethylcholestane-3-ol and 24-ethylcholestane-3,5,6-triol. One oxidation product of oleic acid, namely 9,10-dihydroxyoctadecanoic acid was also identified. The alpha-hydroxyfatty acids, the sterols oxidation products and 9,10-dihydroxyoctadecanoic acid are reported here for the first time as components of pitch issued from ECF bleached kraft pulp mills.
引用
收藏
页码：55 / 66
页数：12
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