物理化学学报 >> 2000, Vol. 16 >> Issue (06): 543-546.doi: 10.3866/PKU.WHXB20000613

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甲烷氧化偶联Na-W-Mn/SiO2催化剂的喇曼光谱

陈宏善, 牛建中, 夏春谷, 李树本   

  1. 中国科学院兰州化学物理研究所，羟基合成与选择氧化国家重点实验室，兰州 730000
  • 收稿日期:1999-09-17 修回日期:1999-11-20 发布日期:2000-06-15
  • 通讯作者: 李树本

Raman Spectroscopy Characterization of Na-W-Mn/SiO2 Catalyst for Oxidative Coupling of Methane

Chen Hong-Shan, Niu Jian-Zhong, Xia Chun-Gu, Li Shu-Ben   

  1. State Key Lanoratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Lanzhou 730000
  • Received:1999-09-17 Revised:1999-11-20 Published:2000-06-15
  • Contact: Li Shu-Ben

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关键词: Na-W-Mn/SiO2催化剂, 喇曼光谱表征, 甲烷氧化偶联

Abstract:

By calcinating commercial silica gel at 1500℃or adding Na2C2O4 and then calcinating at 850℃,α-cristobalite was formed. On the basis of the vibration spectroscopy of silica support, Na-W-Mn/SiO2 catalyst was characterized by Raman spectroscopy. The results show that the structure of support and the interaction among metal components have significant effect on the dispersion and the structure of metal sites, and the tetrahedrally coordinated [WO4] formed on α-cristobalite surface is the most possible site of methane activation with high C2 selectivity.

Key words: Na-W-Mn/SiO2 Catalyst, Raman Characterization, Oxidative Coupling of Methane