摘要：【中文】本发明涉及聚醚多元醇技术领域，提供了一种利用生物质制备聚芳基醚多元醇的方法，本发明使用氯化胆碱、草酸和乙二醇组成的低共熔溶剂对生物质进行热处理，热处理物料经除杂后使用有机溶剂/水共溶剂进行萃取分离，即可得到聚芳基醚多元醇。本发明直接从生物质制备聚芳基醚多元醇，减少了石油基化学品的使用，简化了制备步骤；避免了有毒有害的溶剂或催化剂的使用，降低了成本，更加环保；本发明采用有机溶剂/水共溶剂萃取分离聚芳基醚多元醇，操作简单，易规模化制备；进一步的，本发明的制备条件温和，能耗低；本发明的以上优点均有利于聚芳基醚多元醇的简单、大规模制备，进而促进环保型聚氨酯发泡材料的开发利用，具有实际意义。 【EN】The invention relates to the technical field of polyether polyol, and provides a method for preparing polyaryl ether polyol by using biomass. The invention directly prepares the polyaryl ether polyol from the biomass, reduces the use of petroleum-based chemicals and simplifies the preparation steps; the use of toxic and harmful solvents or catalysts is avoided, the cost is reduced, and the environment is protected; the method adopts the organic solvent/water cosolvent to extract and separate the polyether polyol, has simple operation and is easy for large-scale preparation; furthermore, the preparation condition of the invention is mild, and the energy consumption is low; the advantages of the invention are beneficial to the simple and large-scale preparation of the polyether polyol, and further promote the development and utilization of the environment-friendly polyurethane foam material, and have practical significance.

摘要：【中文】本发明提供了一种抑制木质素芳基醚二聚体和/或木质素芳基醚二聚体解聚产物缩合的方法，属于木质素解聚技术领域。本发明提供的抑制木质素芳基醚二聚体和/或木质素芳基醚二聚体解聚产物缩合的方法，包括以下步骤：将木质素芳基醚二聚体与低共熔溶剂混合，将所得混合物料在加热条件下进行反应；所述低共熔溶剂为氯化胆碱、二醇和草酸的混合物。本发明以氯化胆碱、二醇和草酸的混合物作为低共熔溶剂，在无任何催化剂添加的情况下，便可实现抑制木质素芳基醚二聚体分子内/分子间缩合以及木质素芳基醚二聚体解聚产物的醛醛缩合；且所述低共熔溶剂绿色无毒，可回收，可降解。本发明提供的方法工艺简单、抑制缩合效果显著。 【EN】The invention provides a method for inhibiting condensation of lignin aryl ether dimer and/or lignin aryl ether dimer depolymerization products, belonging to the technical field of lignin depolymerization. The invention provides a method for inhibiting condensation of lignin aryl ether dimer and/or lignin aryl ether dimer depolymerization products, which comprises the following steps: mixing the lignin aryl ether dimer with a eutectic solvent, and reacting the obtained mixed material under the heating condition; the eutectic solvent is a mixture of choline chloride, glycol and oxalic acid. The method takes the mixture of choline chloride, glycol and oxalic acid as a eutectic solvent, and can realize the inhibition of intramolecular/intermolecular condensation of lignin aryl ether dimer and aldehyde condensation of depolymerization products of the lignin aryl ether dimer under the condition of no catalyst addition; and the eutectic solvent is green, nontoxic, recyclable and degradable. The method provided by the invention has the advantages of simple process and obvious condensation inhibition effect.