高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 417.

• Chemistry in Surface Science • 上一篇    下一篇

XPS Spectra of K-Ru/MWNTs Catalysts for Ammonia Synthesis

LIN Jing-Dong, CAI Yun, SUN Jie, LIAO Dai-Wei   

  1. State Key Lab of Phys. Chem. on Solid Surfaces, Dept of Chem., Inst, of Phys. Chem., Xiamen University, Xiamen 361005
  • 出版日期:2000-12-31 发布日期:2000-12-31

XPS Spectra of K-Ru/MWNTs Catalysts for Ammonia Synthesis

LIN Jing-Dong, CAI Yun, SUN Jie, LIAO Dai-Wei   

  1. State Key Lab of Phys. Chem. on Solid Surfaces, Dept of Chem., Inst, of Phys. Chem., Xiamen University, Xiamen 361005
  • Online:2000-12-31 Published:2000-12-31

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摘要：

Alkali metal and alkali oxide-promoted ruthenium has been found to be one of the most active catalysts for ammonia synthesis under atmospheric pressure[1]. Recently, We found[2] that the K-Ru/MWNTs catalyst showed very high activity for ammonia synthesis. It is suggested that the high activity is due to the special electronic and structural properties of the carbon nanotubes. Alkali and alkali oxide doped MWNTs have been reported to be more favorable for electronic transfer and hydrogen storage[3]. In the ammonia synthesis,these properties may play important roles. In this study, K-Ru/MWNTs and Ru/MWNTs were prepared and characterized by XPS. We found that alkali oxide can improve the Ru dispersion similar to the classic catalysts for ammonia synthesis.

Abstract:

Alkali metal and alkali oxide-promoted ruthenium has been found to be one of the most active catalysts for ammonia synthesis under atmospheric pressure[1]. Recently, We found[2] that the K-Ru/MWNTs catalyst showed very high activity for ammonia synthesis. It is suggested that the high activity is due to the special electronic and structural properties of the carbon nanotubes. Alkali and alkali oxide doped MWNTs have been reported to be more favorable for electronic transfer and hydrogen storage[3]. In the ammonia synthesis,these properties may play important roles. In this study, K-Ru/MWNTs and Ru/MWNTs were prepared and characterized by XPS. We found that alkali oxide can improve the Ru dispersion similar to the classic catalysts for ammonia synthesis.

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