采用共沉淀法、普通水热法和微波辅助水热法分别制备了一系列Mo-Bi-Fe-Co系复合氧化物催化剂，利用XRD、FT-IR、H₂-TPR、FE-SEM、BET以及TEM等表征手段对3种方法制备的催化剂进行分析，并以固定床活性评价装置考察催化剂的反应性能。结果表明，与共沉淀法相比，普通水热法和微波水热法制备的催化剂晶型结构、表面性质和颗粒形貌发生显著变化，催化性能大幅度提高。其中微波水热法制备的催化剂催化活性最好，在反应温度为360℃、空速为3 300 h^-1的条件下，其TBA转化率和MAL选择性分别可达69%、90.1%。

A series of Mo-Bi-Fe-Co composite oxides catalysts are prepared through co-precipitation, traditional hydrothermal and microwave-assisted hydrothermal methods, respectively.The prepared catalysts are analyzed by means of XRD, FT-IR, H₂-TPR, FE-SEM, BET and TEM characterization methods, and the reaction performance of the catalysts is investigated by a fixed-bed activity evaluation device.The results indicate that compared with the catalysts made by co-precipitation method, the crystal structure, surface properties and particle morphology of the catalysts prepared by traditional hydrothermal and microwave-assisted hydrothermal methods have changed significantly with greatly improved catalytic performances.The catalyst prepared by microwave-assisted hydrothermal method has the best catalytic activity, over which the conversion of TBA and the selectivity of MAL can reach 69% and 90.1%, respectively under a reaction temperature of 360℃ and a space velocity of 3 300 h^-1.

冯莎莎(1994-),女,硕士研究生,研究方向为异丁烯选择氧化生产甲基丙烯醛催化剂研究,393071437@qq.com