'a hollow pellet suitable as carrier of catalysts for selective exothermic reactions'

摘要

A catalyst hollowed pellet for selective gas phase exothernnic reactions in a ubular fixed bed reactor, having a parallelogram shaped external cross-section. The catalyst has a low resistance to the flow, allows a good heat exchange with he wall of the industrial reactor, has a good effectiveness, offers a good nechanical resistance and guarantee a high total active phase content of the eactor. In particular with a suitable active phase based on copper and additives jives a good catalyst for oxychlorination fixed bed processes as well as with a suitable active phase based on silver and additives gives a good catalyst for selective oxidation processes.