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Lignocellulosics can be separated into their three main components by extraction with acetic acid, containing 0.1% hydrogen chloride, at 110°C. The residual pulp can be bleached in the same solvent with peracetic acid, which is formed in situ when adding hydrogen peroxide. Hemicelluloses and lignin are obtained in a low condensed and relatively reactive form that may be converted into valuable chemical raw materials. Some aspects of such conversions are discussed. 相似文献