Abstract: The ethylbenzene dealkylation type of C₈ aromatics isomerization catalyst SKI-210 was first commercialized in a large integrated aromatics complex. The catalyst preparation process was controllable with good finished product quality. Using the catalyst,the aromatics complex was started up smoothly with super performance during actual long period operation. The test results of application showed that the isomerization activity(PX/X) of the catalyst was 23.53% and the ethylbenzene conversion was 68.33% while the xylene loss per pass was 1.37%. The catalyst performance can meet the contract and user’s production requirements. Compared with the last generation catalyst,the activity and selectivity of SKI-210 catalyst were both improved to achieve the overall technological progress of catalytic performance.

Key words: aromatics, xylene, isomerization, catalyst, ethylbenzene