摘要
通过采用高温喷涂专利技术制备了一系列含助剂的V—Mo系苯氧化制顺酐催化剂，考察了助剂Co对催化剂性能的影响。并在选择氧化评价装置上进行了顺酐性能评价（盐温350—360℃，空速1500～2500h／r，进料量0～50g／m^3）。结果表明，加入助剂Co对催化剂活性和选择性都有所改善，n（Co）：n（V）为0．01时最佳。BET、SEM和XRD等分析表明，加入助剂Co，催化剂的微观结构发生了明显的改变，形成了更具活性的晶相，促进催化剂性能的提高。
A promoter-contained V-Mo-O catalysts of maleic anhydride by benzene oxidation is prepared by coated at high temperature. The effect of different Co loadings is studied. The catalysts tests are carried out in a tube-bed reactor at salt bath temperature of 350 -360℃ , space velocity of 1 500 -2 500 h/r, and feed 0 -50 g/m^3. The results show that Co is an effective promoter to the activity and selectivity of the VMoO catalysts. The optimal Co loading is 1% -4% （the atomic ratio of Co/V）. By XRD,SEM and EDX,etc,the microstructure of the catalysts has better specific surface area.
出处
《现代化工》
CAS
CSCD
北大核心
2011年第1期40-42,44,共4页
Modern Chemical Industry
