木质素磺酸钙（CLS）催化转变制取化学品是实现CLS资源化和高值化利用的重要途径。利用水热合成法制备MgO、NiO、Fe₂O₃、MgFeO_x、NiFeO_x和NiMgFeO_x，并对其进行晶相和结构分析，在水热反应体系中评价了其对CLS的催化解聚性能。结果表明，NiMgFeO_x比表面积最大，为81.72 m²/g；在NiMgFeO_x催化解聚CLS过程中，存在金属活性中心和固体碱中心的协同催化作用，液相产物总收率为75.82%，其中酚类化合物收率可达59.59%，主要为苯酚类、愈创木酚类和紫丁香酚类化合物。

Catalytic conversion of calcium lignosulfonate (CLS) to produce chemicals is an important way to realize high-value utilization of CLS. MgO, NiO, Fe₂O₃, MgFeO_x, NiFeO_x and NiMgFeO_x are synthesized via hydrothermal synthesis method, their crystal phase and structure are analyzed, and their catalytic performance for depolymerization of CLS is evaluated in a hydrothermal reaction system. Results show that NiMgFeO_x shows the maximum specific surface area, reaching 81.72 m²·g^-1. During the catalytic depolymerization of CLS over NiMgFeO_x, there exists a synergistic catalytic effect between metal active centers and solid base centers, and total yield of liquid phase products reaches 75.82%, of which the yield of phenolic compounds reaches 59.59%, mainly including phenols, guaiacols and eugenol compounds.

王怡真(1995-),女,硕士研究生,研究方向为木质素催化转化,1584963038@qq.com