The catalytic performances of two different classes of catalysts containing nickel or/and ruthenium as the active sites were studied in the depolymerisation of lignin isolated from Miscanthus × giganteus. The catalysts were prepared either by coprecipitation (ie, (RuNiMgAlO)x, (RuNiAlO)x, (NiAlO)x, (NiMgAlO)x) or by wet impregnation (ie, Ru/Al₂O₃) and characterized by nitrogen physisorption (BET), XRD, XPS, NH₃-TPD, Raman and H₂-TPR techniques. The experimental results indicate that the presence of ruthenium led to dimers as dominant products.

中文翻译：

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钌基催化剂对木质素的氢解作用：钌在木质素裂解过程中的作用

研究了从芒草（Miscanthus  ×  giganteus）分离出的木质素的解聚反应，研究了两种不同类型的以镍或/和钌为活性中心的催化剂的催化性能。通过共沉淀（即（RuNiMgAlO）x，（RuNiAlO）x，（NiAlO）x，（NiMgAlO）x）或通过湿法浸渍（即Ru / Al ₂ O ₃）制备催化剂，并通过氮物理吸附（ BET，XRD，XPS，NH ₃ -TPD，拉曼和H ₂ -TPR技术。实验结果表明，钌的存在导致二聚体成为主要产物。