The introduction of cerium oxide to phase-pure M1 MoVNbTeO_x with CeO₂ loading from 0 up to 90 wt.% results in highly active catalysts for oxidative dehydrogenation of ethane (ODHE). These catalysts are characterized with BET, ICP, XRD, TEM, SEM and XPS techniques and tested for ODHE process. The results show that the increase of active site, V⁵⁺, is one of the dominant factors to improve the ethane conversion. In addition, the easier re-oxidation of V⁴⁺ to V⁵⁺ due to the presence of Ce⁴⁺ makes an extra contribution to the increase of turn-over frequency. Among all the catalysts, M1 catalyst with 30 wt.% CeO₂ loading obtains the best productivity of 0.69 kg_C2H4/kg_cat·h while the corresponding performance of phase-pure M1 catalyst is 0.34 kg_C2H4/kg_cat·h at 400 °C with the contact time of 18.52 g_cat·h/mol_C2H6. It is further demonstrated that M1/CeO₂ catalyst (e.g., with 50 wt.% CeO₂ as a representative) loading remains highly active after 3 cycles of refreshment in situ, and its crystal structure and surface morphology keep stable compared to the fresh catalyst.

将氧化铈引入到CeO ₂负载量为0到90 wt％的纯M1 MoVNbTeO _x中会产生用于乙烷氧化脱氢的高活性催化剂（ODHE）。这些催化剂通过BET，ICP，XRD，TEM，SEM和XPS技术进行表征，并经过ODHE工艺测试。结果表明，活性位点V ⁵⁺的增加是提高乙烷转化率的主要因素之一。另外，由于Ce ⁴⁺的存在，V ⁴⁺容易再氧化为V ⁵⁺，对增加转换频率有额外的贡献。在所有催化剂中，负载30 wt。％CeO _2的M1催化剂获得0.69 kg的最佳生产率_C2H4 / kg _cat ·h，而纯相M1催化剂在400°C下的相应性能为0.34 kg _C2H4 / kg _cat ·h，接触时间为18.52 g _cat ·h / mol _C2H6。进一步证明，M1 / CeO ₂催化剂（例如，以50 wt。％CeO ₂为代表）的负载在原位刷新3次循环后仍保持高活性，并且与新鲜催化剂相比，其晶体结构和表面形态保持稳定。