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研究了具有氧化还原性的氢醌类化合物作为氧脱木素过程的添加物。结果表明 ,氢醌的加入可以降低纸浆的卡伯值 ,提高氧脱木素的选择性。其原因是氢醌的存在可以提高O2 转化成为含氧的活性反应产物 ,加速木素中甲氧基的脱除 ,有利于破坏木素的结构和脱除木素。
Hydroquinone compounds with redox properties were studied as additives for the oxygen delignification process. The results show that the addition of hydroquinone can reduce the kappa number of pulp and improve the oxygen delignification selectivity. The reason is that the presence of hydroquinone can improve the conversion of O2 into oxygen-containing active reaction products, accelerate the removal of methoxy in lignin, and destroy the structure of lignin and remove lignin.