Study on the Preparation and Performance of Manganese-Based Denitration Catalyst Supported on Sponge Iron

SONG Bo; SHEN Zhenxing; WANG Zitong; PENG Qin; XU Hongmei; YANG Liu; MO Xinyu

doi:10.7652/xjtuxb202601005

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Study on the Preparation and Performance of Manganese-Based Denitration Catalyst Supported on Sponge Iron

Special Topic Pollution Control and Resource Utilization in the “Dual Carbon”Context | 更新时间：2026-01-15

- Study on the Preparation and Performance of Manganese-Based Denitration Catalyst Supported on Sponge Iron
- Journal of Xi'an Jiaotong University Vol. 60, Issue 1, Pages: 41-52(2026)
- 作者机构：
  
  西安交通大学能源与动力工程学院，710049，西安
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202601005
  CLC： X511
- Received：28 April 2025，
  
  Published：10 January 2026
- 稿件说明：
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SONG Bo, SHEN Zhenxing, WANG Zitong, et al. Study on the Preparation and Performance of Manganese-Based Denitration Catalyst Supported on Sponge Iron[J]. Journal of Xi'an Jiaotong University, 2026, 60(1): 41-52.
DOI：

SONG Bo, SHEN Zhenxing, WANG Zitong, et al. Study on the Preparation and Performance of Manganese-Based Denitration Catalyst Supported on Sponge Iron[J]. Journal of Xi'an Jiaotong University, 2026, 60(1): 41-52. DOI： 10.7652/xjtuxb202601005.

摘要

针对氮氧化物（NO

）污染控制问题，研究了一种基于海绵铁（HMT）负载锰的高效NH

选择性催化还原（NH

-SCR）脱硝催化剂。使用2 mol/L硝酸对HMT进行改性，并在此基础上浸渍负载锰前驱体（质量分数为15%）后，经450℃煅烧获得脱硝催化剂HMT-2M-15Mn-450。在固定床反应器中，研究了HMT-2M-15Mn-450的脱硝活性、抗硫抗水性和长时间使用稳定性等。通过X射线衍射、X射线光电子能谱和扫描电镜等表征手段，研究了HMT-2M-15Mn-450催化剂中锰和HMT的相互作用。研究表明：在空速为50000 m

/h时，HMT-2M-15Mn-450在200～250℃的NO转化率超过90%；HMT-2M-15Mn-450在200℃连续使用12h后NO转化率仍超过95%，且具有较强的抗硫抗水中毒性能。研究结果可为铁基矿物材料在烟气脱硝领域的资源化高值利用提供参考。

Abstract

To address the issue of nitrogen oxides (NO

)pollution control，a high-efficiency NH

-selective catalytic reduction (NH

-SCR)denitration catalyst based on manganese supported on sponge iron (HMT) is developed.The HMT is modified with 2 mol/L nitric acid，impregnated with a manganese precursor (mass fraction of 15%)，and calcined at 450℃ to obtain the denitration catalyst designated asHMT-2 M-15 Mn-450.The denitration activity，resistance to sulfur and water poisoning，and long-term stability ofHMT-2 M-15 Mn-450 are investigated in a fixed-bed reactor.The interaction between manganese and HMT in the HMT-2 M-15 Mn-450 catalyst is

characterized using techniques such as X-ray diffraction (XRD)，X-ray photoelectron spectroscopy (XPS)，and scanning electron microscopy (SEM).The results demonstrate that at a space velocity of 50000 m

/h，the NO conversion efficiency of HMT-2 M-15 Mn-450 exceeds 90% within the temperature range of 200—250℃.After 12 hours of continuous operation at 200℃，the NO conversion rate remains above 95%，and the catalyst exhibits strong resistance to sulfur and water poisoning.The findings provide a valuable reference for the high-value utilization of iron-based mineral materials in the field of flue gas denitration.

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