含磷FCC催化剂的酸性研究  

Study on Acidity of New Matrix FCC Catalysts

作　　者：吴治国[1] 李文儒[1] 韩崇家[1] 李承烈[1] 

机构地区：[1]华东理工大学石油加工系

出　　处：《华东理工大学学报（自然科学版）》1998年第6期735-740,共6页Journal of East China University of Science and Technology

摘　　要：利用磷酸对高岭土进行处理，制取不同含磷量的活性基质，然后与分子筛、填充物等组合成ＦＣＣ催化剂。在用ＦＴＩＲ技术和ＭＡＴ试验等催化剂表征手段对其表征之后，发现酸性、酸密度和强度等与催化剂的裂化性能有很大关系；所制５种不同含磷量催化剂的酸性特征随含磷量的变化而较有规律地变化。A ranking of new matrixes containing different weight of phosphorus was made by treating metakaolin with phosphoric acid,and then mixed these matrixes with REY and bindings to form FCC catalysts also containing different weights of P.After being characterized by FTIR and MAT,it was found that with increasing P content,the number of total acid sites and Bronsted acid sites on cat.Surface are decreasing,but the ratio of Lewis acid sites number to total acid site's is increasing;and there is no strong Bronsted acid on the samples' surface;tt was found also that the activity increases with the increase of samples' acid density and that the strong Lewis acid sites relate highly to the coke formation.

关 键 词：FCC 催化剂 磷 表面酸性 FTIR 酸性 催化裂化 

分 类 号：TE624.41[石油与天然气工程—油气加工工程] TQ426.95[化学工程]