Citation: ZHANG Qiu-Lin, XU Hai-Di, QIU Chun-Tian, LIN Tao, NG Mao-Chu, CHEN Yao-Qiang. Catalytic Performance and Steady-State Kinetics of Cu-ZSM-5 for Selective Catalytic Reduction of NO with NH₃[J]. Acta Physico-Chimica Sinica, ;2012, 28(05): 1230-1236. doi: 10.3866/PKU.WHXB201202232 shu

Catalytic Performance and Steady-State Kinetics of Cu-ZSM-5 for Selective Catalytic Reduction of NO with NH₃

1.
Key Laboratory of Green Chemistry and Technology of the Ministry of Education, Sichuan University, Chengdu 610064, P. R. China

Received Date: 9 December 2011
Available Online: 23 February 2012
Fund Project: 国家自然科学基金(20773090, 20803049)资助项目 (20773090, 20803049)

A series of Cu-ZSM-5 catalysts with different Cu loadings were prepared by an incipient wetness impregnation method. These catalysts were used for studies of selective catalytic reduction (SCR) of NO by NH₃. The results showed that Cu-ZSM-5 with 5% Cu loading showed the best catalytic activity, the conversion of NO was more than 80% over the temperature range 198-470 ℃, and the highest NO conversion was 96.5%. The SCR activity was only influenced slightly by the addition of H₂O or SO₂. Visible diffraction of the CuO phase was observed when the Cu content was above 5%. The results of steady-state kinetics studies indicated that the SCR reaction over Cu-ZSM-5 with 5% Cu loading was zero-order with respect to NH₃, first-order with respect to NO, and nearly half-order with respect to O₂. The apparent activation energy for the reaction was found to be 47.7 kJ·mol^-1.
- Cu-ZSM-5,
- Selective catalytic reduction,
- Steady-state kinetics,
- Apparent activation energy
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Catalytic Performance and Steady-State Kinetics of Cu-ZSM-5 for Selective Catalytic Reduction of NO with NH3

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通讯作者: 陈斌, bchen63@163.com

Catalytic Performance and Steady-State Kinetics of Cu-ZSM-5 for Selective Catalytic Reduction of NO with NH₃