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

页码：55 / 66

页数：12

共 20 条

[1]

Back E.L., 2000, Pitch control, wood resin and deresination

[2] Characterization of organic deposits produced in the kraft pulping of Eucalyptus globulus wood [J].