Citation: WANG Hong, LI Bin, LU Xue-bin, LI Cui-qing, DING Fu-chen, SONG Yong-ji. Selective catalytic reduction of NO by methane over the Co/MOR catalysts in the presence of oxygen[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(9): 1106-1112. shu

Selective catalytic reduction of NO by methane over the Co/MOR catalysts in the presence of oxygen

WANG Hong ¹ ,
LI Bin ^1,2 ,
LU Xue-bin ^1,3 ,
LI Cui-qing ¹ ,
DING Fu-chen ¹ ,
SONG Yong-ji ¹

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

Received Date: 12 May 2015
Available Online: 8 July 2015
Fund Project: National Natural Science Foundation of China (21342009) (21342009) State Key Laboratory of Heavy Oil Processing(SKLHOP201501) (SKLHOP201501) Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality (PHR20110517). (PHR20110517)

A series of Co/MOR catalysts were prepared by impregnation method and used in the selective catalytic reduction of nitric oxide with methane (CH₄-SCR). These catalysts were characterized by XRD, BET, TG-MS, H₂-TPR, NH₃-TPD and NO-TPD; their performance in the CH₄-SCR of NO was investigated. The results showed that cobalt species exist as Co₃O₄ spinal in the Co/MOR catalysts; the acidity and redox and NO absorption/desorption ability of the Co/MOR catalysts are changed after the incorporation of cobalt in MOR zeolite, in comparison with pure MOR zeolite. The catalytic performance of Co/MOR is closely related to its redox and NO adsorption/desorption ability, which are dependent on the cobalt loading. The Co(10)/MOR catalyst with a cobalt loading of 10% exhibits high activity in the CH₄-SCR of NO; over it the conversion of nitric oxide reaches 54.2% at 330 ℃.
- nitric oxide,
- methane,
- selective catalytic reduction,
- cobalt oxide,
- mordenite
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