Effect of P on catalytic performances of V-Mo/Ti denitration catalyst

Huang Li; Wang Hu; Zong Yuhao; Chang Zhengfeng; Gao Yibo; Li Jinke; Yu Yang

doi:10.7513/j.issn.1004-7638.2022.01.010

Volume 43 Issue 1

Mar. 2022

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Huang Li, Wang Hu, Zong Yuhao, Chang Zhengfeng, Gao Yibo, Li Jinke, Yu Yang. Effect of P on catalytic performances of V-Mo/Ti denitration catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 67-73. doi: 10.7513/j.issn.1004-7638.2022.01.010

Citation:

Huang Li, Wang Hu, Zong Yuhao, Chang Zhengfeng, Gao Yibo, Li Jinke, Yu Yang. Effect of P on catalytic performances of V-Mo/Ti denitration catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 67-73. doi: 10.7513/j.issn.1004-7638.2022.01.010

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Effect of P on catalytic performances of V-Mo/Ti denitration catalyst

doi: 10.7513/j.issn.1004-7638.2022.01.010

1.
Datang Nanjing Environmental Protection Technology Co., Ltd., Nanjing 211111, Jiangsu, China
2.
School of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, Jiangsu, China

Received Date: 2021-11-14
Available Online: 2022-04-24
Publish Date: 2022-02-28

Abstract

Abstract

Industrial V-Mo/Ti denitration catalyst was modified by phosphorus (P) via impregnation method to enhance the catalytic performances. The catalyst was characterized by XRD, N₂ adsorption and desorption, XPS, H₂-TPR and UV-vis. The denitration activities of the catalyst were tested on a fixed-bed micro-reactor. The results show that phosphorus has little impact on the crystallographic form and pore structure of the catalyst. The presence of P could increase the polymeric vanadate of the catalyst, leading to the increase of (V³⁺+V⁴⁺)/V⁵⁺ ratio and chemisorbed oxygen. This tendency becomes more obvious with the increase of calcination temperature, which is beneficial to the improvement of denitration activities of the catalyst. Besides, the presence of P also affects the acidity of the catalyst. The V-Mo-P/Ti catalyst exhibits relatively higher acidity than that of the V-Mo/Ti catalyst at lower calcination temperatures (≤500 ℃). However, high calcination temperature results in the increase of P₂O₅, and the acidity of the catalyst decreases accordingly. The catalyst roasted at 500 ℃ exhibits the best catalytic activity and high resistance to SO₂ and H₂O, possessing a promising perspective for industrial application.
- V-Mo/Ti catalyst,
- denitration,
- modifier,
- phosphorus,
- calcination temperature

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References(28)

References

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