高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (8): 1151-1153.

• 研究简报 • 上一篇    下一篇

轻质烷烃异构化催化剂Pd/HM的TPR研究

苏运来, 胡家芬, 李全芝   

  1. 复旦大学化学系, 上海 200433
  • 收稿日期:1992-09-21 修回日期:1993-03-26 出版日期:1993-08-24 发布日期:1993-08-24
  • 通讯作者: 李全芝.
  • 作者简介:第一作者:30岁, 男, 硕士, 副教授
  • 基金资助:

    国家自然科学基金

TPR Studies of Pd/HM Catalyst for Isomerization of Light Normal Paraffins

SU Yun-Lai, HU Jia-Fen, LI Quan-Zhi   

  1. Department of Chemistry, FudanUniversity, Shanghai, 200433
  • Received:1992-09-21 Revised:1993-03-26 Online:1993-08-24 Published:1993-08-24

关键词: 程序升温还原, 氢型丝光沸石, 钯, 负载金属催化剂

Abstract: TPRwas applied to study the reduction behavior of the catalyst of Pd/HMfor the iso-merization of light normal paraffins.The results show that palladium can be completely reduced with 10%H2-Ar steam at about 200℃.The TPRspectrum consists of three reduced peaks at 27℃, 80℃ and 125℃ respectively.They corresponded to the reduction of Pd2+ ions occupying different sites in channels of HMand the Pd2+ ions are reduced by one step which is as follows: Pd2+ + 2e=Pd.The distribution of palladium on H-mordenite is about 10% on external surface, 65% in main channel of 12-membered ring and 25% in the channel of distorted 8-mem-bered ring.

Key words: TPR, H-mordenite, Palladium, Supported metal catalyst