• Title/Summary/Keyword: emergency escape mask cartridge

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Low Temperature Catalytic Activity of Cobalt Oxide for the Emergency Escape Mask Cartridge

  • Park, Jae-Man;Kim, Deog-Ki;Shin, Chang-Sub
    • International Journal of Safety
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    • v.1 no.1
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    • pp.58-61
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    • 2002
  • A preparation method of cobalt supported alumina catalyst for a emergency escape mask cartridge has been studied. Catalysts were prepared by incipient wetness impregnation method using pre-shaped $\gamma$=alumina powders of 70-100 mesh. The catalyst was tested in a continuous-flow reactor system and characterized by elemental analysis, BET and TGA-DTA techniques. Cobalt shows higher activity than platinum or nickel for carbon monoxide oxidation at room temperature. Optimum loading amount of cobalt was 10 wt.% for CO oxidation and the reaction activity increases gradually with the increase of calcination temperature up to $450^{\circ}C.

A Study on the Characteristics of $CO_3O_4/{\gamma}-Al_2O_3$ Catalysts for the Emergency Escape Mask Cartridge (화재대피용 방독마스크 정화통 적용을 위한 $CO_3O_4/{\gamma}-Al_2O_3$ 촉매 특성 연구)

  • Kim Deogki;Kim Bokie;Shin Chae-Ho;Shin Changsub
    • Journal of the Korean Society of Safety
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    • v.19 no.4 s.68
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    • pp.74-79
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    • 2004
  • [ $CO_3O_4/{\gamma}-Al_2O_3$ ] catalysts were reported high activity on the low temperature CO oxidation. The effects of the calcination temperature, the loaded amount of cobalt and the oxygen concentration on the characteristics of CO oxidation have been investigated for a emergency escape mask cartridge. $Co(NO_3)_2\cdot6H_2O$ was used as cobalt precursor and the catalysts were prepared by incipient wetness impregnation. TGA shows that enough calcination is accomplished at $450^{\circ}C$ and cobalt phase is $Co_3O_4$ after calcination in the temperature range of $300\ ~500^{\circ}C$. The specific surface area and pore volume of catalysts are decreased with increasing of loaded amount of cobalt. And with the increase of loaded amount of cobalt and the oxygen concentration, the catalytic activity is increased.