流化催化裂化中DeSOx催化剂的研究

用共沉淀法合成了三个系列的ＤｅＳＯｘ催化剂：铜类催化剂、铈类催化剂、铜铈类催化剂。模拟流化催化裂化（ＦＣＣ）条件，分别考察了催化剂的组成、水热处理、反应温度、体系中氧气浓度为ＳＯｘ吸附容量的影响，研究了催化剂吸附ＳＯｘ后的再生性能，同时将合成催化剂与工业催化剂（ＩＮＴＥＲＣＡＴ公司的ＤｅＳＯｘ催化剂）的ＤｅＳＯｘ性能进行了比较。结果表明，随 反应温度５的升高，催化剂的ＳＯｘ吸附容量出现一极大值；水

THE STUDY ON FCC DeSOx CATALYST

Three series of catalysts (copper-containing catalyst, cerium-containing catalyst, copper-ceri-um-containing catalyst) were prepared by coprecipitation method. Simulating the FCC conditions, the effects of the composition of catalyst, reaction temperature, O2 concentration and hydrothermal treatment on the SOx adsorption capacity were examined. Meanwhile, the regeneration of catalysts deactivated by the SOx adsorption was investigated and the comparison of DeSOx performance between our catalysts and INTERCAT catalyst was carried out. The results show that the SOx adsorption capacity of catalysts takes on a extreme value with the increase of reaction temperature, the hydrothermal treatment makes the adsorption capacity decrease, the optimal O2 concentration for our experimental conditions is between 0.5% ( V) and 0.8% ( V), the DeSOx performances of our catalysts are better than that of the INTERCAT catalyst.