Formation of low-molecular-mass compounds during the oxygen delignification of pine kraft pulp

Raimo Alén, Eero Sjöström

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)

Abstract

The formation of low-molecular-mass degradation products was studied by gas-liquid chromatographic analyses during the oxygen delignification of pine kraft pulp. Depending on the alkali charge and bleaching time the total amount of carbohydrate-derived aliphatic acids and monomeric lignin degradation products varied between 0.1—1.7% and 0.2—0.5% of pulp, respectively. Formic, glycolic, acetic, 3-deoxypentonic, and deoxytetronic acid were the most abundant aliphatic acids, while acetovanillone, 5-formylvanillin, 5-carboxyvanillin, and vanillic acid predominated (70—90% of the aromatics detected) among the monomeric lignin-derived degradation products.
Original languageEnglish
Pages (from-to)83 - 86
Number of pages4
JournalHolzforschung
Volume45
Issue numbers1
DOIs
Publication statusPublished - 1991
MoE publication typeA1 Journal article-refereed

Fingerprint

Delignification
Kraft pulp
Molecular mass
Lignin
Oxygen
Degradation
Acids
Fatty Acids
Vanillic Acid
Alkalies
Bleaching
Acetic Acid
Pulp
Carbohydrates
Gases
Liquids

Cite this

Alén, Raimo ; Sjöström, Eero. / Formation of low-molecular-mass compounds during the oxygen delignification of pine kraft pulp. In: Holzforschung. 1991 ; Vol. 45, No. s1. pp. 83 - 86.
@article{d066dae145b64976bf6ca3f7c2f99efe,
title = "Formation of low-molecular-mass compounds during the oxygen delignification of pine kraft pulp",
abstract = "The formation of low-molecular-mass degradation products was studied by gas-liquid chromatographic analyses during the oxygen delignification of pine kraft pulp. Depending on the alkali charge and bleaching time the total amount of carbohydrate-derived aliphatic acids and monomeric lignin degradation products varied between 0.1—1.7{\%} and 0.2—0.5{\%} of pulp, respectively. Formic, glycolic, acetic, 3-deoxypentonic, and deoxytetronic acid were the most abundant aliphatic acids, while acetovanillone, 5-formylvanillin, 5-carboxyvanillin, and vanillic acid predominated (70—90{\%} of the aromatics detected) among the monomeric lignin-derived degradation products.",
author = "Raimo Al{\'e}n and Eero Sj{\"o}str{\"o}m",
year = "1991",
doi = "10.1515/hfsg.1991.45.s1.83",
language = "English",
volume = "45",
pages = "83 -- 86",
journal = "Holzforschung",
issn = "0018-3830",
publisher = "De Gruyter",
number = "s1",

}

Formation of low-molecular-mass compounds during the oxygen delignification of pine kraft pulp. / Alén, Raimo; Sjöström, Eero.

In: Holzforschung, Vol. 45, No. s1, 1991, p. 83 - 86.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Formation of low-molecular-mass compounds during the oxygen delignification of pine kraft pulp

AU - Alén, Raimo

AU - Sjöström, Eero

PY - 1991

Y1 - 1991

N2 - The formation of low-molecular-mass degradation products was studied by gas-liquid chromatographic analyses during the oxygen delignification of pine kraft pulp. Depending on the alkali charge and bleaching time the total amount of carbohydrate-derived aliphatic acids and monomeric lignin degradation products varied between 0.1—1.7% and 0.2—0.5% of pulp, respectively. Formic, glycolic, acetic, 3-deoxypentonic, and deoxytetronic acid were the most abundant aliphatic acids, while acetovanillone, 5-formylvanillin, 5-carboxyvanillin, and vanillic acid predominated (70—90% of the aromatics detected) among the monomeric lignin-derived degradation products.

AB - The formation of low-molecular-mass degradation products was studied by gas-liquid chromatographic analyses during the oxygen delignification of pine kraft pulp. Depending on the alkali charge and bleaching time the total amount of carbohydrate-derived aliphatic acids and monomeric lignin degradation products varied between 0.1—1.7% and 0.2—0.5% of pulp, respectively. Formic, glycolic, acetic, 3-deoxypentonic, and deoxytetronic acid were the most abundant aliphatic acids, while acetovanillone, 5-formylvanillin, 5-carboxyvanillin, and vanillic acid predominated (70—90% of the aromatics detected) among the monomeric lignin-derived degradation products.

U2 - 10.1515/hfsg.1991.45.s1.83

DO - 10.1515/hfsg.1991.45.s1.83

M3 - Article

VL - 45

SP - 83

EP - 86

JO - Holzforschung

JF - Holzforschung

SN - 0018-3830

IS - s1

ER -