Study on Modification of Sm2O3 by Ni/Sepiolite Catalyst
来源期刊：JOURNAL OF RARE EARTHS2003年第4期
论文作者：李松军 罗来涛 邓庚凤
Key words：catalytic chemistry; Ni-catalyst; sepiolite; samarium; rare earths;
Abstract: A series of Ni-Sm/sepiolite catalysts were prepared by impregnation. The modification of Sm2O3 for Ni/sepiolite was investigated by TPR, XPS and poisoning of CS2, respectively. The results indicate that the addition of Sm2O3 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 Sm2O3 on Ni/sepiolite catalyst includes not only electronic effect but also steric effect, whereas electronic effect seems to be principal.
李松军1，罗来涛1，邓庚凤1
(1.Institute of Applied Chemistry, Nanchang University, Nanchang 330047, China)
Abstract:A series of Ni-Sm/sepiolite catalysts were prepared by impregnation. The modification of Sm2O3 for Ni/sepiolite was investigated by TPR, XPS and poisoning of CS2, respectively. The results indicate that the addition of Sm2O3 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 Sm2O3 on Ni/sepiolite catalyst includes not only electronic effect but also steric effect, whereas electronic effect seems to be principal.
Key words:catalytic chemistry; Ni-catalyst; sepiolite; samarium; rare earths;
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