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本文研究了用蛇笼树脂分离粗木质素溶液中的小分子盐,用互贯磺酸树脂分离粗木质素溶液中的还原糖,以及用大孔和凝胶磺酸树脂对木质素分级作用。此外还研究了用离子交换法测定木质磺酸盐的磺化度和有木质磺酸盐存在时小分子盐含量测定,都得到了满意结果。
In this paper, we studied the separation of small molecular salts in crude lignin solution using snake cage resin, the separation of reducing sugars in crude lignin solution by interpenetrating sulfonic acid resin, and the fractionation of lignin by macroporous and gelled sulfonic acid resins. In addition, the sulfonation degree of lignosulfonate measured by ion exchange method and the content of small molecule salt in the presence of lignosulfonate have also been studied, and satisfactory results have been obtained.