【摘要】 考察了制备方法、焙烧温度和成型助剂对甲缩醛氧化制甲醛铁钼钴三元催化剂活性的影响。采用比表面、孔结构、ＸＲＤ和ＸＰＳ等测试技术研究了催化剂的宏观结构、晶相组成、表面铁、钼离子价态和浓度。结果表明：焙烧温度对催化剂的宏观结构、晶相组成和催化活性均有影响；通过改变成型助剂可改善催化剂的宏观结构，制得具有高活性、高选择性和良好热稳定性的催化剂。更多还原

【Abstract】 The influences of preparation method, the calcined temperature and auxiliary forming reagent on the activity of the Fe Mo Co O catalyst for oxidation of methylal to formaldehyde were studied. The macrostructure, the composition of the crystal phase, the surface ion valency and concentration of the catalysts were investigated by BET, XRD and XPS techniques. The results showed that the macrostructure, the composition of the crystal phase and the catalytic activity of the catalyst are related to the calcining temperature. It was also showed that, with a suitable auxiliary forming reagent, the macrostructure of the catalyst will be improved, which is essential for high catalytic activity and heat stability.更多还原