摘要
通过添加碱性氧化物ＭｇＯ来调节γ－ＡＬ＿２Ｏ＿３表面的酸性，考察了不同镁含量对γ－ＡＬ＿２Ｏ＿３的表面酸性及积炭性能的影响，同时考察了以镁改性的γ－Ａｌ＿２Ｏ＿３为活性基体的ＦＣＣ模式催化剂的活性及积炭性能，结果表明，加镁不改变γ－Ａｌ＿２Ｏ＿３表面的酸中心类型，只是减少了强Ｌｅｗｉｓ酸中心，有利于抑制γ－Ａｌ＿２Ｏ＿３上的积炭反应，适量的镁对ＦＣＣ模式催化剂的活性有所提高。
The influence of magnesium on the acidity,coking and activity of γ-Al_2O_3 andmodel craking catalysts supported by γ_Al_2O_3 was investigated. It is observed that al most all ofthe acid sites on the surface of γ-Al_2O_3 are Lewis type. The number of strong acid sites isreduced with the increase of MgO content, while weak acid sites are hardly changed. Theaddition of MgO inhibits the coking on γ-Al_2O_3,and the proper amount of MgO improved theactivity of the model catalysts.
出处
《石油大学学报（自然科学版）》
CSCD
1995年第3期79-82,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
