Abstract: Vanadium phosphorous oxide catalyst precursors were prepared in organic medium and with added Bi promoter. The catalytic performance of catalysts with different n(Bi)/n(V) were investigated. Experimental results showed that，when n(Bi)/n(V) was 0.01，the yield of this catalyst (Bi0.01-VPO) reached the highest 42.6%，its conversion was enhanced from 31% to 71% compared to non Bi-doped catalyst. By using BET，XRD，SEM and XPS techniques，comparative analysis was carried out between (Bi0.01-VPO) and (VPO). Specific surface area of catalyst（Bi0.01-VPO）was slightly increased，and the composition and microscopic appearance of catalyst phases changed by introducing the Bi promoter. Moreover，the oxidation state of catalyst surface vanadium species state and surface n(P)/n(V) were also higher.

摘要： 通过在有机相法制备钒磷氧催化剂前体的过程中引入铋助剂，考察了不同n(Bi)/n(V)催化剂的催化性能。结果表明，当n(Bi)/n(V)=0.01时，催化剂（Bi0.01-VPO）的收率达到最大（42.6%），与没有掺杂铋助剂的催化剂（VPO）相比其转化率由31%提高到71%。采用BET、XRD、SEM、XPS分析手段，对催化剂（Bi0.01-VPO）与（VPO）进行比较分析，发现添加铋助剂改变了催化剂物相组成和微观形貌，使催化剂表面钒的平均氧化态和表面n(P)/n(V)比都有所升高，略微增大了催化剂的比表面积。