用催速失活的方法研究了AB -97分子筛催化剂的失活动力学。实验表明 ,催化剂的失活过程具有逆选择性失活特征。由失活动力学对催化剂稳定性的模拟计算可知 ,乙烯空速对催化剂稳定性的影响分为两个阶段 :在低空速阶段 ,随空速的减小 ,稳定期显著增加 ;在高空速阶段 ,使用寿命几乎不随空速而改变 The deactivation kinetics of AB-97 molecular sieve catalyst was studied by a rapid deactivation method. Experiments show that the catalyst deactivation process with reverse selective deactivation characteristics. From the kinetics of inactivation kinetics on the simulation of the stability of the catalyst, it can be seen that the effect of ethylene space velocity on the stability of the catalyst is divided into two stages: at low airspeed stage, with the decrease of airspeed, the stability period significantly increases; at high airspeed stage, Service life almost does not change with the airspeed