Deactivation kinetics and modelling of coke removal under supercritical conditions for the example of ethylbenzene disproportionation
Deactivation kinetics and modelling of coke removal under supercritical conditions for the example of ethylbenzene disproportionation
复制标题
以乙苯歧化为例的超临界条件下除焦的失活动力学和建模
DOI：
10.1002/ceat.270180409
复制
发表时间：
1995
影响因子：
2.1
通讯作者：
H. Hofmann
中科院分区：
文献类型：
--
作者：
F. Niu;G. Kolb;H. Hofmann
通过超临界条件下环反应器中乙苯与质子化Y-faujasite （Z-14）歧化反应的实验研究，得到了乙苯的失活动力学和脱焦动力学。推导了乙苯歧化反应的稳态动力学，从而测定了催化剂的活性。在小摩尔分数的乙苯中，由于焦炭的适度去除，失活动力学可以用幂函数关系来描述。脱焦速率与催化剂的活性和失活速率有关。
Deactivation kinetics and coke removal kinetics were derived from experimental studies on the disproportionation of ethylbenzene with a protonated Y-faujasite (Z-14) in a loop reactor under supercritical conditions. Derivation of the steady state kinetics of ethylbenzene disproportionation permitted determination of the catalyst activity. At small educt mole fractions of ethylbenzene, owing to the modest removal of coke the deactivation kinetics can be described by a power relationship. The rate of coke removal can be correlated with the activity and the deactivation rate of the catalyst.