Kinetic Models for Peroxide Bleaching Under Alkaline Conditions. I. One and Two Chromophore Models
作者:
P.J. Wright,
J. Abbot,
期刊:
Journal of Wood Chemistry and Technology
(Taylor Available online 1991)
卷期:
Volume 11,
issue 3
页码: 349-371
ISSN:0277-3813
年代: 1991
DOI:10.1080/02773819108050279
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Several kinetic models for alkaline peroxide bleaching of Eucalypt mechanical pulp have been examined. A previously reported kinetic model, developed to describe peroxide bleaching of softwoods, was found to be inadequate. The models proposed here assume two distinct categories of chromophores which are eliminated through first order processes, rather than the high orders for reaction processes suggested in previous kinetic analyses. Our model enables prediction of a maximum in the rate of bleaching in the range pH 11–12, whereas previous models imply that the rate of chromophore elimination increases continuously with hydroxide ion concentration.
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