摘要
以有害金属对裂化催化剂的污染为基础,分析了镍、钒、铁、钠、钙对分子筛孔结构、酸性的作用以及对催化剂活性、选择性的影响,探讨了金属钝化剂与有害金属的作用、钝化机理和在优化催化剂使用环境、改善产品分布等方面的积极作用,提出了无毒、高效、多功能的金属钝化剂发展方向。
Based on the metal fouling on FCC catalyst, the effects of harmful metal such as Ni, V, Fe, Na, and Ca on the pore structure, acidity, catalytic activity and selectivity of molecular sieves are analyzed. The reactions between passivators and metals, passivating mechanism, and the positive effects of the optimizing of catalyst use conditions and improving of the products＇ distribution are discussed. The future developing of metal passivator is pointed out as nonpoisonous, highly efficient and multifunctional.
出处
《现代化工》
CAS
CSCD
北大核心
2009年第10期86-90,共5页
Modern Chemical Industry
基金
陕西省科技厅(2008K07-21)资助
