M1 phase of MoVNbTe oxide catalyst is a promising catalyst for oxidative dehydrogenation of ethane (ODHE) process. Raising V⁵⁺ concentration in the catalyst is an effective way to improve the catalytic performance while thermal oxidation in air has limited effect on the increase of vanadium valence state. In this work, manganese is introduced into the catalyst system, acting as oxygen facilitator, making M1 oxidized by gas phase oxygen at lower temperature during the preparation process. The influence of manganese addition amount and combination method on catalyst activity is studied. BET, XPS, SEM, TEM, ICP, TPR, and TPD characterizations are performed to study the correlation between catalyst properties and catalytic performance. Corresponding to the valence state increment, the catalyst promoted by MnO_x gives an improved catalytic performance, e.g., over 20% improvement in ODHE process at 400 °C based on the ethane conversion.

MoVNbTe氧化物催化剂的M1相是一种有前景的乙烷氧化脱氢（ODHE）工艺催化剂。提高催化剂中的V ⁵⁺浓度是提高催化性能的有效方法，而空气中的热氧化对钒价态的提高影响有限。在这项工作中，锰被引入到催化剂体系中，作为氧气的促进剂，使M1在制备过程中在较低的温度下被气相氧氧化。研究了锰的添加量和配合方法对催化剂活性的影响。进行了BET，XPS，SEM，TEM，ICP，TPR和TPD表征，以研究催化剂性能与催化性能之间的关系。对应于价态增量，MnO促进了催化剂的生成_x给出了改进的催化性能，例如基于乙烷转化率，在400℃下ODHE工艺中提高了20％以上。