摘要
A series of Ni Sm/sepiolite catalysts were prepared by impregnation. The modification of Sm 2O 3 for Ni/sepiolite was investigated by TPR, XPS and poisoning of CS 2, respectively. The results indicate that the addition of Sm 2O 3 improves the activity of hydrogenation and anti poisoning ability of Ni/sepiolite catalyst, and it also increases the dispersion of nickel atoms over support and the amount of active nickel atoms in catalyst. Effect of Sm 2O 3 on Ni/sepiolite catalyst includes not only electronic effect but also steric effect, whereas electronic effect seems to be principal.
A series of Ni Sm/sepiolite catalysts were prepared by impregnation. The modification of Sm 2O 3 for Ni/sepiolite was investigated by TPR, XPS and poisoning of CS 2, respectively. The results indicate that the addition of Sm 2O 3 improves the activity of hydrogenation and anti poisoning ability of Ni/sepiolite catalyst, and it also increases the dispersion of nickel atoms over support and the amount of active nickel atoms in catalyst. Effect of Sm 2O 3 on Ni/sepiolite catalyst includes not only electronic effect but also steric effect, whereas electronic effect seems to be principal.
基金
ProjectsupportedbyNationalNaturalScienceFoundationofChina (2 980 3 0 0 2 )
