Citation: DONG Shi-lin, SU Ya-xin, LIU Xin, LI Qian-cheng, YUAN Min-hao, ZHOU Hao, DENG Wen-yi. Experimental study on selective catalytic reduction of NO by C₃H₆ over Fe/Ti-PILC catalysts[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(10): 1231-1239. shu

Experimental study on selective catalytic reduction of NO by C₃H₆ over Fe/Ti-PILC catalysts

1.
School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
2.
Changzhou Vocational Institude of Engineering, Changzhou 203164, China

Corresponding author: SU Ya-xin, suyx@dhu.edu.cn
Received Date: 8 May 2018
Revised Date: 9 August 2018

Fund Project: Jiangsu Province Prospective Joint Research Projects BY2015032-02the National Natural Science Foundation of China 51278095The project was supported by the National Natural Science Foundation of China (51278095) and Jiangsu Province Prospective Joint Research Projects (BY2015032-02)

Figures(7)

Ti-pillared interlayer clay (PILC)-based catalysts ion exchanged with Fe were prepared and used for selective catalytic reduction of NO_x using propylene as the reducing agent under oxygen-rich conditions. The relationship between structure and properties of the catalysts was studied using N₂-adsorption/desorption, XRD, UV-vis, H₂-TPR, and Py-FTIR. The results show that the prepared 19Fe/Ti-PILC catalyst can achieve complete removal of NO at 400 ℃, and N₂ selectivity can reach over 90% and has better resistance to water vapor and SO₂. N₂-isothermal adsorption/desorption and XRD results show that structure of montmorillonite is opened, cross-linked pillars are effective, and a large specific surface area and pore volume are formed. UV-vis results show that the denitrification activity of the catalyst is related to content of oligomeric Fe_xO_y. Py-FTIR results show that both Lewis acid and Brønsted acid are presented on the catalyst surface. Fe³⁺ loading into the pillared clay can significantly increase the Lewis acid content. Lewis acid is one of the influencing factors on the denitrification activity of the catalyst. H₂-TPR indicates that the catalyst has a strong reduction ability at about 400 ℃, and the reduction ability of the catalyst is mainly represented by the reduction of Fe³⁺→Fe²⁺.
- oxygen-rich conditions,
- pillared clay,
- selective catalytic reduction,
- propylene
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Experimental study on selective catalytic reduction of NO by C₃H₆ over Fe/Ti-PILC catalysts