过渡金属型锰基低温NH3-SCR脱硝催化剂研究综述

doi:10.11962/1006-4990.2020-0086

摘要/Abstract

摘要：

综述了一元至多元过渡金属与锰的复合氧化物和负载型过渡金属与锰基催化剂的低温脱硝性能,着重阐述了在不同活性组分下,制备出不同结构的过渡金属催化剂对脱硝活性的影响。分析总结了过渡金属催化剂在低温NH₃-SCR中的反应机理及其抗水抗硫性能,最后,针对过渡金属催化剂存在的问题,展望了该领域未来可能的发展方向和研究热点。

关键词: 过渡金属, 低温SCR, 抗硫抗水性, 脱硝机理

Abstract:

The low temperature NO_x elimination properties of both single or multi-transition metal manganese-based catalysts and supported single or multi-transition metal manganese-based catalysts were summarized.The influence of transition metal catalysts with different structures prepared under different active components on denitration activity was emphatically expounded.The reaction mechanism of transition metal catalyst in low temperature NH₃-SCR and its sulfur and water resistance were analyzed and summarized.Finally,aiming at present problems,the potential development direction and research hotspot of tran sition metal catalysts in the future were prospected.

Key words: transition metal, low-temperature SCR, sulfur and water resistance, denitration mechanism

中图分类号:

O643.36

冯晴,曾贤君,张利杰,李贺,孟广莹,孙彦民. 过渡金属型锰基低温NH₃-SCR脱硝催化剂研究综述[J]. 无机盐工业, 2021, 53(1): 7-13.

Feng Qing,Zeng Xianjun,Zhang Lijie,Li He,Meng Guangying,Sun Yanmin. Summary of transition metal manganese-based denitration catalyst for low temperature NH₃-SCR[J]. Inorganic Chemicals Industry, 2021, 53(1): 7-13.

图/表 3

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催化剂	制备方法	条件	NO转化率/%
催化剂	制备方法	条件	初始条件	加入SO₂和H₂O	停加SO₂和H₂O
Cu₁Mn_0.5Ti_0.5O_x^[24]	共沉淀法	379 mg/m³ NH₃,643 mg/m³ NO,411 mg/m³ NO₂,286 mg/m³ SO₂, 体积分数5% H₂O和5% O₂ ,Ar作平衡气,200 ℃	90	64.6	73.4
MnNiTiO_x^[25]	共沉淀法	379 mg/m³ NH₃,670 mg/m³ NO,286 mg/m³ SO₂ ,体积分数 10% H₂O 和 5% O₂ ,He作平衡气,300 ℃	85	70~75	85
V-W-Mn-Ce/TiO_x^[26]	浸渍法	379 mg/m³ NH₃,670 mg/m³ NO,1 000 mg/m³ SO₂,体积分数 10% H₂O和5% O₂,N₂作平衡气,240 ℃	100	>80	85
Cu_yMn_zAl_1-zO_x^[27]	共沉淀法	379 mg/m³ NH₃,670 mg/m³ NO,286 mg/m³ SO₂,体积分数 5% H₂O和5% O₂,Ar作平衡气,150 ℃	92.1	64.9	80.7
Mn_0.5W_0.1TiO_x^[28]	共沉淀法	379 mg/m³ NH₃,670 mg/m³ NO,体积分数5% O₂,N₂作平衡气,200 ℃	95%以上	—	—
Fe-Co-Mn-Ce/TiO₂^[29]	浸渍法	379 mg/m³ NH₃,670 mg/m³ NO,571 mg/m³ SO₂,体积分数 10% H₂O和6% O₂,N₂作平衡气,200 ℃	100	85	>90
W-MnO_x-TiO₂^[30]	共沉淀法	759 mg/m³ NH₃,1339 mg/m³ NO,286 mg/m³ SO₂ ,体积分数 10% H₂O 和 5% O₂ ,He作平衡气,140~260 ℃	100	>95	—
W-SnMnCeO_x^[31]	共沉淀法	379 mg/m³ NH₃,670 mg/m³ NO,286 mg/m³ SO₂ ,体积分数 5% H₂O 和 5% O₂ ,N₂作平衡气,200 ℃	100	>80	>90

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过渡金属型锰基低温NH₃-SCR脱硝催化剂研究综述

Summary of transition metal manganese-based denitration catalyst for low temperature NH₃-SCR

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