高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (2): 290.

• 研究简报 • 上一篇    下一篇

甲烷氧化偶联CaF2/Sm2O3催化剂的研究

周水琴, 龙瑞强, 黄亚萍, 万惠霖, 蔡启瑞   

  1. 厦门大学化学系, 固体表面物理化学国家重点实验室, 厦门 361005
  • 收稿日期:1994-03-10 修回日期:1994-07-10 出版日期:1995-02-24 发布日期:1995-02-24
  • 通讯作者: 万惠霖
  • 作者简介:周水琴,女,28岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Oxidative Coupling of Methane Over CaF2/Sm2O3Catalysts

ZHOU Shui-Qin, LONG Rui-Qiang, HUANG Ya-Ping, WAN Hui-Lin, TSAI Khi-Rui   

  1. Department of Chemistry, State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen Univeristy, Xiamen, 361005
  • Received:1994-03-10 Revised:1994-07-10 Online:1995-02-24 Published:1995-02-24

关键词: 甲烷氧化偶联, 氟化钙, 三氧化二钐, 离子交换, 氧物种

Abstract: The results showed that,with the addition of CaF2to Sm2O3,the catalytic properties for OCM were apparently improved.XRD analysis of the fresh catalysts revealed the existence of SmOF in 20%-80% CaF2/Sm2O3XPS and IR spectra of O2-pre adsorbed CaF2/Sm2O3samples taken at room temperature indicated the presence of O2-and O2-species. O2-species could also be detected over 20%CaF2/Sm2O3at 500℃ in situ IRspectroscopy,but it vanished over the Sm2O3at the same temperature.

Key words: Methane oxidative coupling, CaF2, Sm2O3, Ionic exchange, Oxygen species

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