高等学校化学学报 ›› 1982, Vol. 3 ›› Issue (3): 403.

• 论文 • 上一篇    下一篇

稀土金属间化合物的催化性能——CO及不饱和气相烃在LaNi5上的加氢

陈豫, 周建略, 陈树滋, 张孟成, 王文灼   

  1. 四川大学化学系
  • 收稿日期:1981-03-05 出版日期:1982-08-24 发布日期:1982-08-24

CATALYTIC PROPERTIES OF RARE EARTH INTERMETALLIC COMPOUNDS——HYDROGENATION OF CO AND UNSATURATED GASEOUS ALIPHATIC HYDROCARBONS ON LaNi5

Chen Yu, Zhou Jianlue, Chen Shuzi, Zhang Mengcheng, Wang Wen-zhuo   

  1. Department of Chemistry, Sichuan University, Chengdu
  • Received:1981-03-05 Online:1982-08-24 Published:1982-08-24

摘要: 本文应用脉冲色谱微型反应器研究了CO,C2H4,C2H2和C6H6在稀土金属间化合物LaNi5上的催化加氢作用,并且在同一装置上与纯Ni进行了对比。实验结果表明:(1)LaNi5的催化活性与被加氢物质的性质有关。与纯Ni相比,LaNi5对被加氢物质所显示的催化效率按下面次序变小:CO>C2H4>C2H2>C6H6,但对苯而言,LaNi5的活性却比纯Ni低。(2)在H2中经升温处理过的LaNi5比未经升温处理的LaNi5具有更大的催化活性。(3)CO甲烷化反应在LaNi5及纯Ni上均遵从一级反应速度规律,其活化能分别为15.5Kcal/mole和31Kcal/mole。

Abstract: The catalytic hydrogenation of CO, C2H4, C2H2 and C6H6 on the intermetallic compound LaNis has been investigated by means of the chro-matographic pulse technique wiih a microreactor. The reaction was also carried out on pure Ni in the same apparatus. The experimental results show(1) The catalytic activity of LaNi5 depends on the character of hydro-genated substances. The catalytic efficiency of LaNi5 compared with Ni decreases in the order CO>C2H4>C2H2>C6H6, but the activity of LaNi5 for the hydrogenation of C6H6 is lower than that of pure Ni.(2) The catalytic activity of LaNi5 pretreated at 200℃ in flow hydrogen is higher than that of LaNi5 without treatment.(3) Methanation reactions of CO on both LaNi5 and pure Ni are first order and the activation energies are 15.5 Kcal/mole on LaNi5 and 31 Kcal/ mole on pure Ni, respectively.

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