甲醇氨氧化制氢氰酸沸腾床催化剂活性组分及其催化作用的研究  

Catalytic Active Components of Iron-Molybdenum Catalyst and Catalytic Ammoxidation of Methanol to HCN in Boiling Bed Microreactor

作　　者：王誉富[1] 范致荣 吴越[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《化工学报》1991年第5期638-641,共4页CIESC Journal

摘　　要：铁钼氧化物不仅是甲醇氧化制甲醛的催化剂,也是甲醇氨氧化制氢氰酸的优良催化剂之一.有关前者的活性组分和催化性能的报道较多,后者报道不多,用于沸腾床上铁钼催化剂未见报道.本文用多种实验方法研究了用于沸腾床的铁钼催化剂活性组分及其催化作用.The catalytic activity of iron-molybdenum catalyst in ammoxidation of methanol to HCN in boiling bed microreactor has been investigated with XRD, IR, Mossbauer Spectrum, ESR and XPS. The studies of XRD and IR indicated that iron and molybdenum ions were present as Fe2(MoO4)3, MoOs and α-Fe2O3 in the catalyst, and that the change of the relative content of Fe2(MoO4)3 and catalyticac activity showed corresponding correlation in a peak shape with Fe/Mo ratio. Mossbauer Spectrum, ESR and XPS analysis showed that iron and molybdenum would be present as Fe3+ and Mo6+ in Fe2(MoO4)3,Fe2O3·xMoO3 and α-Fe2O3·Fe2 (MoO4)3 was in coordination of an octahedron, while Fe2O3·xMoO3(x<3) showed im perfect coordination.The former could be a basic active component, the latter was very likely the surface active center. All the three components synergistically performed the function of selective oxidation.

关 键 词：甲醇氨 氧化 氢氰酸 催化剂 活性 

分 类 号：TQ426.82[化学工程]