Effects of Metal Ions and Stabilisers on Peroxide Decomposition During Bleaching
Effects of Metal Ions and Stabilisers on Peroxide Decomposition During Bleaching
复制标题
金属离子和稳定剂对漂白过程中过氧化物分解的影响
DOI：
10.1080/02773819508009501
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
J. Abbot
中科院分区：
文献类型：
--
作者：
D. Brown;J. Abbot
摘要建立了一个数学模型，使机械浆漂白过程中过氧化物的总消耗量由两个独立的组分表示：与纸浆反应中消耗的过氧化物和金属催化反应中分解的过氧化物。使用该模型，可以确定在纸浆存在下金属催化的过氧化物分解的程度。这种方法可以直接研究漂白过程中过渡金属离子和稳定剂的作用。使用恒定的pH值条件有利于直接比较漂白过程中获得的结果与在没有纸浆的情况下类似系统获得的结果。纸浆的存在可以对过渡金属离子和稳定剂对过氧化物分解的行为产生显著影响。看来，木质素和纤维素组分可以负责在纸浆的存在下观察到的催化行为的修改。稳定剂对…
Abstract A mathematical model has been formulated to allow the total peroxide consumption during bleaching of a mechanical pulp to be represented by two separate components; peroxide consumed in reactions with the pulp and peroxide decomposed in metal catalysed reactions. Using this models it is possible to determine the extent of metal catalysed peroxide decomposition in the presence of pulp. This method enables the effects of transition metal ions and stabilisers during bleaching to be studied directly. The use of constant pH conditions facilitates the direct comparison of the results obtained during bleaching with those obtained for analogous systems in the absence of pulp. The presence of pulp can exert a significant influence on the behaviour of transition metal ions and stabilisers towards peroxide decomposition. It appears that both the lignin and cellulose components can be responsible for the modifications in the catalytic behaviour observed in the presence of pulp. The effects of stabilisers on ...