Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Catalytic Oxidation of Ammonia over Metal Supported on Alumina at Low Temperature

금속담지 활성알루미나 촉매의 암모니아 저온연소반응

  • Lim, Yun-Hui (Dept. of Applied Environmental Science, Kyung Hee University) ;
  • Lee, Ji-Yeol (Dept. of Applied Environmental Science, Kyung Hee University) ;
  • Park, Byung-Hyun (Technology Institute, Anytech Co., Ltd.)
  • 임윤희 (경희대학교 환경응용과학과) ;
  • 이주열 (경희대학교 환경응용과학과) ;
  • 박병현 ((주)애니텍 기술연구소)
  • Received : 2013.07.02
  • Accepted : 2013.08.03
  • Published : 2013.09.30
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Abstract

In order to improve the selective oxidation reaction of gaseous ammonia at a low temperature, various types of metal-impregnated activated alumina were prepared, and also physical and chemical properties of the conversion of ammonia were determined. Both types of metal (Cu, Ag) impregnated activated alumina show high conversion rate of ammonia at high temperature (over $300^{\circ}C$). However, at lower temperature ($200^{\circ}C$), Ag-impregnated catalyst shows the highest conversion rate (93%). In addition, the effects of lattice oxygen of the developed catalyst was studied. Ce-impregnated catalyst showed higher conversion rate than commercial alumina, but also showed lower conversion rate than Ag-impregnated sample. Moreover, 5 vol.% of Ag activation under hydrogen shows the highest conversion rate result. Finally, through high conversion at low temperature, it was considered that the production of NO and $NO_2$, toxic by-products, were effectively inhibited.

Keywords

References

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  1. Ag-Cu/$Al_2O_3$ 복합촉매를 이용한 저온에서의 $NH_3$ 산화 vol.31, pp.2, 2013, https://doi.org/10.12925/jkocs.2014.31.2.313