Molybdenum carbide (Mo₂C) has emerged as a remarkable catalyst for the cleavage of the aromatic carbon–oxygen (C_aryl–O) and alkyl carbon–oxygen (C_alkyl–O) in lignin and lignin model compounds. However, the selectivity for the target product, that is phenol, is unsatisfactory due to the secondary alkylation reactions of the primarily produced phenol with the organic solvent used. Here, we report that a one-dimensional nitrogen-doped Mo₂C catalyst (N-Mo₂C@C) mediated from Mo-MOF via a “pyrolysis–carbothermal reduction” process shows a remarkably high selectivity toward phenol and monophenols in the valorization of aryl ethers and lignin because of its controllable phase composition and suitable valence state. The current study provides a method to develop efficient catalysts for lignin conversion into valuable chemicals.

中文翻译：

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金属-有机骨架介导的一维氮掺杂碳化钼的合成，用于裂解木质素和二聚体木质素模型化合物

碳化钼（Mo ₂ C）已成为在木质素和木质素模型化合物中裂解芳族碳氧（C_芳基-O）和烷基碳氧（C_烷基-O）的杰出催化剂。但是，由于最初生产的苯酚与所用有机溶剂的二次烷基化反应，目标产物即苯酚的选择性不能令人满意。在这里，我们报道了一维氮掺杂的Mo ₂ C催化剂（N-Mo ₂通过“热解-碳热还原”过程从Mo-MOF介导的C @ C）在芳基醚和木质素的增值中显示出对苯酚和单酚的极高选择性，这是由于其可控制的相组成和合适的价态。当前的研究提供了开发用于将木质素转化成有价值的化学物质的有效催化剂的方法。