Mo-V-Nb tri-component oxide catalysts were prepared and firstly used for the selective oxidation of C_α-OH lignin compounds. The catalytic performance of the composite oxides was obviously enhanced due to the synergistic effects of Mo and V elements. Mo_5-xV_xO₁₄ phase with a variable Mo/V ratio provided suitable active sites for the oxidative dehydrogenation (ODH) of C_α-OH lignin model compound. The optimized Mo-V-Nb molar composition was confirmed as Mo_0.61V_0.31Nb_0.08O_x/TiO₂, which exhibited the prominent catalytic activity with the turnover frequency of 1.04×10^-3 mmol·g(cat)^-1·s^-1. Even at room temperature, the catalysts showed highly-efficient ODH reaction activities. The active phase for selective oxidation reaction and the inhibiting effect of α-MoO₃ phase were also discussed in the study.

制备的Mo-V-Nb的三组分氧化物催化剂并且首先用于C的选择性氧化_α -OH木质素化合物。Mo和V元素的协同​​作用明显提高了复合氧化物的催化性能。Mo / V比率可变的Mo _{5- x} V _x O ₁₄相为Cα _- OH木质素模型化合物的氧化脱氢（ODH）提供了合适的活性位点。确定了优化的Mo-V-Nb摩尔组成为Mo _0.61 V _0.31 Nb _0.08 O _x / TiO ₂，其以1.04×10的周转频率表现出突出的催化活性。^-3 mmol·g（cat）^-1· s ^-1。即使在室温下，催化剂也显示出高效的ODH反应活性。为选择性氧化反应的活性相和α-的MoO的抑制效果₃相在研究中进行了讨论。