Coking and deactivation of zeolites Influence of the PoreStructure

The modes of coking and of eactivation of zeolites during n-heptane cracking at 723 K were established on the basis of (i) the composition of the arbonaceous compounds responsible for deactivation (coke), (ii) the eactivating effect of the coke molecules and (iii) the reduction by coke of the volume accessible to nitrogen and to n&#..