摘要
选用2种工业催化裂化催化剂Cat-G和Cat-H,采用3种不同类型的铁污染源,参照Mitchell方法制备出被铁污染的催化剂,表征了它们的物化性质,并用轻油微反(MAT)和重油微反(ACE)评价它们的反应性能。结果表明,不同铁源的铁污染对催化剂相对结晶度和比表面积等物化性质上的影响程度存在很大差异,其中环烷酸铁产生的铁污染影响显著;ACE评价结果显示了2种FCC催化剂铁中毒后反应性能的差别,而MAT评价结果则无法区分;环烷酸铁类大分子沉积在催化剂颗粒表面造成催化剂铁中毒,同时还发现具有大孔基质的催化剂具备更强的抗铁污染性能。
A modified Mitchell method was used to load targeted iron content on two commercial FCC catalysts Cat-G and Cat-H. The iron contamination was from three different iron sources. The physico-chemical properties and catalytic performance of these iron-contaminated catalysts were investigated in details. The results indicated that the effects of iron contamination from different sources on the relative crystallinity and specific surface area of catalyst were different, and the effect of iron contamination from iron naphthenate was the severe one. The ACE evaluation could tell the difference in the catalytic performances of Cat-G and Cat-H after iron poison, while MAT could not. Iron poison was mainly caused by large molecular such iron naphthenate. And the catalyst with more mesopore was shown better iron resistance.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2007年第3期37-40,共4页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
催化裂化
铁污染
FCC
iron contamination
