摘要
自从70年代初有学者对催化反应过程的强制振荡操作进行实验研究以来,人们已越来越注意到,对于某些催化反应过程,采用合适的强制周期振荡操作条件比相应的稳态操作产生更优的反应效果,尤其是一些催化氧化反应过程,国内外已有许多研究者开展了大量的实验研究,发现在一定强制振荡周期及振幅操作下能显著提高反应速率（转化率）、主产物的选择性及收率。同时。
The effects of forced periodic oscillation of oxygen concentration on the propylene ammoxida-tion reaction over a Mo - Bi catalyst were investigated in a continuous flow micro - fixed bed reactor at 44℃. The propylene conversion, acrylonitrile selectivity and periodic average yield were studied with various forced oscillation patterns and compared with the results of steady - state operation , which is the condition of industrial operation. The results show that the periodic average yield of acrylonitrile under any forced periodic oscillation of oxygen concentration among this experimental conditions, thus obtained could higher than that under the steady - state condition. A better forced periodic oscillation condition was that the low ratio of oxygen with propylene 9.0, operation time 210 min, and the high ratio 10.5, operation time 60 min. Operating under this condition, the periodic average yield of acrylonitrile reached 80.70% , increased about 2.3% compared with the acrylonitrile yield of steady- state operation.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1999年第6期845-850,共6页
CIESC Journal
基金
中国石油化工集团公司技术开发中心基础研究基金资助项目(No.X595008)
关键词
氧浓度
强制周期振荡
丙烯
氨氧化反应
反应过程
oxygen concentration, forced periodic oscillation, propylene, ammoxidation
