Deacetylation of Eucalyptus globulus Acetosolv Pulps in Aqueous Media: A Kinetic Study

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Title:Deacetylation of Eucalyptus globulus Acetosolv Pulps in Aqueous Media: A Kinetic Study
Creators:
Vila, Carlos
Dapía, Sonia
Santos, Valentín
Parajó, Juan Carlos
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 66, 9, pp. 1443-1456
Uncontrolled Keywords:Deacetylation, Acetosolv delignification, Kinetics, Acetic acid pulping, <i>Eucalyptus globulus</i> wood, Cellulose, Hemicellulose removal

Abstract

Pulps obtained from <i>Eucalyptus globulus</i> wood in HCl-acetic acid-water (Acetosolv processing) were subjected to aqueous processing at a liquor-to-solid ratio of 8 kg/kg and 160-190 °C, in order to explore the suitability of this kind of treatment for pulp purification. Both deacetylation and hemicellulose removal were caused by the treatment, whereas cellulose was not significantly affected. The concentration profiles of reaction products (glucose, xylose and acetic acid) were determined, and the experimental data were modelled using pseudohomogeneous, first-order kinetics. The dependence of kinetic coefficients on temperature was established by means of Arrhenius-type equations. <p>

Title:Deacetylation of Eucalyptus globulus Acetosolv Pulps in Aqueous Media: A Kinetic Study
Creators:
Vila, Carlos
Dapía, Sonia
Santos, Valentín
Parajó, Juan Carlos
Uncontrolled Keywords:Deacetylation, Acetosolv delignification, Kinetics, Acetic acid pulping, <i>Eucalyptus globulus</i> wood, Cellulose, Hemicellulose removal
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:66
Number:9
Page Range:pp. 1443-1456
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20011443UNSPECIFIED
ID Code:1869
Item Type:Article
Deposited On:06 Feb 2009 17:13
Last Modified:06 Feb 2009 16:13

Citation

Vila, Carlos; Dapía, Sonia; Santos, Valentín; Parajó, Juan Carlos (2001) Deacetylation of Eucalyptus globulus Acetosolv Pulps in Aqueous Media: A Kinetic Study. Collection of Czechoslovak Chemical Communications, 66 (9). pp. 1443-1456. ISSN 0010-0765

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