Citation: XU Xiang-yang, GU Cheng, WANG Hong, ZHANG Yuan-yuan, KE Yan, ZHANG Cheng-le, WANG Ming-jin, SONG Bao-hua, LI Cui-qing. Catalytic performance of Co/Hβ in N₂O decomposition[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(7): 877-883. shu

Catalytic performance of Co/Hβ in N₂O decomposition

1.
1. College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617;

Corresponding author: WANG Hong, SONG Bao-hua,
Received Date: 27 January 2014
Available Online: 14 April 2014
Fund Project: 国家自然科学基金(21342009) (21342009)北京市属高等学校人才强教计划(PHR20110517) (PHR20110517)国家级大学生创新创业训练计划(201310017004) (201310017004)北京市本科生科学研究计划(2013J00032)。 (2013J00032)

The catalyst of cobalt oxide supported on Hβ zeolite (Co/Hβ) was prepared by impregnation method and characterized by XRD, H₂-TPR, NH₃-TPD, and SEM. The effects of calcination temperature and cobalt loading on the catalytic performance of Co/Hβ in N₂O decomposition were investigated. The results showed that cobalt species are present mainly in the form of Co₃O₄ spinel oxide. The acidity, acid amount and redox property of the Co/Hβ catalyst were significantly affected by the calcination temperature; the Co-Al-O species that is difficult to reduce by hydrogen is formed at a calcination temperature over 700℃. The catalytic activity of the Co/Hβ catalyst was affected by the calcintion temperature and cobalt loading. The Co/Hβ catalyst calcined at 600℃ and with a cobalt loading of 10%~15% exhibits excellent catalytic activity in N₂O decomposition; the temperatures t₁₀, t₅₀ and t₉₅ for N₂O decomposition are 325~329℃, 364~367℃, and 406~408℃, respectively.
- N₂O,
- catalytic decomposition,
- cobalt,
- Hβ zeolite,
- calcination temperature
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Catalytic performance of Co/Hβ in N₂O decomposition