Prehydrolysis Sulfite Revisited

摘要: The prehydrolysis of beech wood in water at different temperatures and the impact this treatment on further pulping stages were explored. Both, increased condensation degree an number free phenolic hydroxyl groups found lignin isolated after prehydrolysis. An intermediate alkaline extraction (using either NaOH or MgO as base) following was Finally, acid sulfite cooks differently pretreated materials performed, obtained thoroughly analyzed.