研制了适合多乙苯脱氢制多乙烯苯的Ｆｅ－Ｋ－Ｃｅ复合型脱氢催化剂．助剂钾以钾霞石（ＫＡｌＳｉＯ４）方式引入，既克服了钾的大量流失，又保留了钾碱的抗积炭性能，使催化剂活性稳定．另一助剂ＣｅＯ２的加入对催化剂中的各组分起到了一定的分散作用，使催化剂晶粒度变小，并且提高了活性组分Ｆｅ２Ｏ３的还原温度，因而可增强催化剂的抗还原能力． A Fe-K-Ce composite dehydrogenation catalyst suitable for the dehydrogenation of polyethylbenzene to poly ethylene was developed. Potassium introduced as KAlSiO4 not only overcomes the large amount of potassium loss, but also retains the anti-carbon performance of potash, making the catalyst activity stable. The addition of CeO2, one of the other auxiliaries, can disperse the components in the catalyst, reduce the grain size of the catalyst and increase the reduction temperature of Fe2O3, which enhances the anti-reduction ability of the catalyst.