催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (7): 553-555.

• 研究快讯 • 上一篇    下一篇

钠盐修饰的Mn/SiO2催化剂的原位XRD研究

侯思聪,曹元,熊伟,刘凌涛,寇元   

  1. 北京大学化学与分子工程学院分子动态与稳态结构国家重点实验室, 北京100871
  • 收稿日期:2006-07-25 出版日期:2006-07-25 发布日期:2006-07-25

In Situ XRD Study on Sodium Salt-Modified Mn/SiO2 Catalysts for the Oxidative Coupling of Methane

HOU Sicong, CAO Yuan, XIONG Wei, LIU Lingtao, KOU Yuan*   

  1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • Received:2006-07-25 Online:2006-07-25 Published:2006-07-25

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摘要： 采用原位X射线衍射法对高温下不同钠盐修饰的Mn/SiO2催化剂物相结构进行了研究. 结果表明,反应温度下催化剂表面的钠盐处于熔融的无定形态,提高了Mn2O3活性中心在甲烷氧化偶联反应中的催化活性.

关键词: 钠盐;氧化锰;二氧化硅;原位X射线衍射, 低熔点;无定形;甲烷氧化偶联

Abstract: Sodium salt-modified Mn/SiO2 catalysts have been characterized by in situ X-ray diffraction. The results indicate that the low melting point sodium salts exhibit amorphous features under reaction conditions and they are good promoters for the Mn/SiO2 catalyst for the oxidative coupling of methane.

Key words: sodium salt, manganese oxide, silica, in situ X-ray diffraction, low melting point, amorphous, oxidative coupling of methane