Deacetylation of Eucalyptus globulus acetosolv pulps in aqueous media:: A kinetic study

被引：0

作者：

Vila, C ^{[1
]}

Dapía, S ^{[1
]}

Santos, V ^{[1
]}

Parajó, JC ^{[1
]}

机构：

[1] Univ Vigo, Dept Chem Engn, Orense 32004, Spain

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 2001年 / 66卷 / 09期

关键词：

acetic acid pulping; acetosolv delignification; Eucalyptus globulus wood; deacetylation; hemicellulose removal; cellulose; kinetics;

D O I：

10.1135/cccc20011443

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pulps obtained from Eucalyptus globulus 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 degreesC, 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.

引用

页码：1443 / 1456

页数：14

共 50 条

[21] Effect of extended cooking and oxygen prebleaching on the surface energy of Eucalyptus globulus kraft pulps
Carvalho, MG
Ferreira, PJ
Santos, JMRCA
Amaral, JL
Figueiredo, MM
[J]. JOURNAL OF PULP AND PAPER SCIENCE, 2005, 31 (02): : 90 - 94
[22] COLD CAUSTIC SODA PULPS FROM YOUNG PLANTATION EUCALYPTUS-NITENS AND GLOBULUS
ORME, RK
BANHAM, PW
ALLISON, K
RUSSELL, S
[J]. APPITA JOURNAL, 1993, 46 (02): : 119 - 122
[23] Lipophilic extractives in Eucalyptus globulus kraft pulps.: Behavior during ECF bleaching
Freire, CSR
Silvestre, AJD
Neto, CP
[J]. JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 2005, 25 (1-2) : 67 - 80
[24] Bleaching Miscanthus x giganteus Acetosolv pulps with hydrogen peroxide/acetic acid. Part 1: Behaviour in aqueous alkaline media
Jose Villaverde, Juan
Ligero, Pablo
de Vega, Alberto
[J]. BIORESOURCE TECHNOLOGY, 2009, 100 (20) : 4731 - 4735
[25] Pressurized hydrogen peroxide bleaching of Eucalyptus globulus pulps.: Part II:: Kinetics
Mota, Sofia F.
Carvalho, Graca V. S.
Ferreira, Licinio M. G.
[J]. NORDIC PULP & PAPER RESEARCH JOURNAL, 2007, 22 (01) : 23 - 27
[26] Influence of kappa number of unbleached pulp on ECF bleachability of Eucalyptus globulus kraft pulps
Neto, CP
Daniel, AID
Evtuguin, DV
Silvestre, AJ
Furtado, FP
Cavaleiro, AI
Sousa, PM
[J]. 2000 INTERNATIONAL PULP BLEACHING CONFERENCE, POSTER PRESENTATION, 2000, : 107 - 110
[27] Primary and secondary fines from Eucalyptus globulus kraft pulps.: Characterization and influence
Ferreira, PJ
Martins, AA
Figueiredo, MM
[J]. PAPERI JA PUU-PAPER AND TIMBER, 2000, 82 (06): : 403 - 408
[28] Effect of pulping conditions on the amount of methylglucuronic and hexenuronic acids in kraft pulps of Eucalyptus globulus
Monrroy, Mariel
Mendonca, Regis
Rodriguez, Jaime
Baeza, Jaime
Freer, Juanita
[J]. APPITA JOURNAL, 2008, 61 (03): : 212 - 215
[29] Characterization and study of the bleachability of Acetosolv pulps obtained from sugarcane bagasse
Gonçalves, AR
Ruzene, DS
[J]. ADVANCES IN LIGNOCELLULOSICS CHEMISTRY FOR ECOLOGICALLY FRIENDLY PULPING AND BLEACHING TECHNOLOGIES, 1998, : 49 - 52
[30] A study of Eucalyptus grandis and Eucalyptus globulus branch wood microstructure
Washusen, R
Evans, R
Southerton, S
[J]. IAWA JOURNAL, 2005, 26 (02) : 203 - 210

← 1 2 3 4 5 →