高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (4): 552.

• 研究论文 • 上一篇    下一篇

Ni-S油脂氢化催化剂的EXAFS研究

解金海1, 王其武2   

  1. 1. 哈尔滨工业大学应用化学系, 哈尔滨 150006;
    2. 中国科学技术大学近代化学系
  • 收稿日期:1992-07-23 修回日期:1992-12-15 出版日期:1993-04-24 发布日期:1993-04-24
  • 通讯作者: 解金海

EXAFS Studies of Ni-S Catalyst for Hydrogenation of Oils and Fat

XIE Jin-Hai1, WANG Qi-Wu2   

  1. 1. Department of Applied Chemistry, Harbin Institute of Technology, Harbin, 150006;
    2. Department of Modern Chemistry, University of Science and Technology of China, Hefei
  • Received:1992-07-23 Revised:1992-12-15 Online:1993-04-24 Published:1993-04-24

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被引次数

1

摘要： 用EXAFS法测定了Ni-S油脂氢化催化剂的结构。Ni催化剂被硫中毒生成了Ni3S2,致使由3个Ni原子组成的空穴(3CN)数目减少,这样虽引起该催化剂的活性降低,但却提高了油脂氢化对生成反式油酸酯的选择性。

关键词: Ni-S催化剂, 油脂氢化, EXAFS

Abstract: The structure of Ni-Scatalyst used for hydrogenation of oils and fat was studied with Ni-Kedge extended X-ray absorption fine structure(EXAFS) speetrophotometry.Tt was found that after the Ni catalyst was poisoned with sulphur, the compound of Ni3S2 was formed, and the 3CNspace of Ni was occupied by S.The addition of sulphur decreased the activity of Ni catalyst, however, it exhibit a high selectivity for the formation of trans-oleate.

Key words: Ni-S catalyst, Hydrogenation of oils and fat, EX AFS

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