能源化学(英文版)

能源化学(英文) ›› 2003, Vol. 12 ›› Issue (1): 37-42.

• Articles • 上一篇    下一篇

Simultaneous Removal of COS and H2S at Low Temperatures over Nanoparticle α-FeOOH Based Catalysts

Zhihua Gao, Chunhu Li, Kechang Xie   

  1. State Key Lab of C1 Chemistry and Technology, Institute of Coal Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
  • 出版日期:2003-03-30 发布日期:2003-03-30

Simultaneous Removal of COS and H2S at Low Temperatures over Nanoparticle α-FeOOH Based Catalysts

Zhihua Gao, Chunhu Li, Kechang Xie   

  • Online:2003-03-30 Published:2003-03-30

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2003

被引次数

7

摘要： Catalysts using α-FeOOH nanoparticles as the active ingredient were tested by a microreactor- chromatography assessing apparatus at atmospheric pressure between 25 and 60oC with a gas hourly space velocity of 10,000 h-1 , while the removal performance of H2S with catalysts was investigated using the thermal gravimetric method. The results show that the catalysts are highly active for COS hydrolysis at low temperatures (<60oC) and high gas hourly space velocity, and the highest activity can reach 100%. The catalyst is particularly stable for 12 h, and no deactivation is observed. Nanoparticle α-FeOOH prepared using hydrated iron sulfate shows higher COS hydrolysis activity, and the optimum calcination temperature for the catalyst is 260oC . In addition, the catalysts can remove COS and H2S simultaneously, and 60oC is favorable for the removal of H2S. The compensation e ect exists in nanoparticle-based catalysts.

Abstract: Catalysts using α-FeOOH nanoparticles as the active ingredient were tested by a microreactor- chromatography assessing apparatus at atmospheric pressure between 25 and 60oC with a gas hourly space velocity of 10,000 h-1 , while the removal performance of H2S with catalysts was investigated using the thermal gravimetric method. The results show that the catalysts are highly active for COS hydrolysis at low temperatures (<60oC) and high gas hourly space velocity, and the highest activity can reach 100%. The catalyst is particularly stable for 12 h, and no deactivation is observed. Nanoparticle α-FeOOH prepared using hydrated iron sulfate shows higher COS hydrolysis activity, and the optimum calcination temperature for the catalyst is 260oC . In addition, the catalysts can remove COS and H2S simultaneously, and 60oC is favorable for the removal of H2S. The compensation e ect exists in nanoparticle-based catalysts.

Key words: nanoparticle α-FeOOH, COS hydrolysis, removal of H2S, compensation effect