摘要
在铂催化剂中引入铥,它对环巳烷脱氢、甲基环戊烷芳构化和正庚烷的转化有不同的影响。这些催化剂中,以铥含量为0.2%的铂铥催化剂的催化性能最突出。电镜图象表明,铂铥催化剂中铂的分散情况比铂催化剂均匀。
A series of pt-Tm catalysts supported on r-Al_2O_3 was prepared by im pregnation. We have studied the dehydrogenation of cyclohexane, aromatization of methyl cyclopentane and coversion of n-heptane on the catalysts under certain conditions. The results showed that the properties of catalysts change with various reactants and thulium content in catalysts. When the thulium content in atalysts is equal to 0.2 wt% the aromatization yield for the coversion of n-heptane has maximun value. We have compared the electron microphotography of pt-0.2Tm catalyst supported on r-Al_2O_3 with pt catalyst's, and found that the dispersion of platinum in pt-0.2Tm catalyst had the advantage over pt catalyst's.
基金
国家自然科学基金
关键词
铥
铂
反应性能
催化剂
thulium
platinum
reforming
catalyst
