Effect of SO<sub>2</sub> on catalytic performance of rare earth concentrate catalyst for NH<sub>3</sub>-SCR denitrification

JIAO Kunling; ZHAO Yangguo; WU Wenfei; WANG Zhenfeng; GONG Zhijun

doi:10.11949/0438-1157.20190641

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Effect of SO₂ on catalytic performance of rare earth concentrate catalyst for NH₃-SCR denitrification

Catalysis\, kinetics and reactors | 更新时间：2026-07-24

- Effect of SO₂ on catalytic performance of rare earth concentrate catalyst for NH₃-SCR denitrification
- CIESC Journal Vol. 70, Issue 12, Pages: 4645-4653(2019)
- 作者机构：
  
  1. 内蒙古科技大学能源与环境学院，内蒙古包头 014010
  2. 内蒙古自治区白云鄂博矿多金属资源综合利用国家重点实验室，内蒙古包头 014010
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190641
  CLC： TQ 028.8
- Received：10 June 2019，
  
  Revised：2019-09-16，
  
  Online First：09 June 2020，
  
  Published：05 December 2019
- 稿件说明：
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焦坤灵, 赵阳国, 武文斐, 王振峰, 龚志军. SO₂对稀土精矿催化剂NH₃-SCR脱硝催化性能的影响[J]. 化工学报, 2019, 70(12): 4645-4653 DOI: 10.11949/0438-1157.20190641.

JIAO Kunling, ZHAO Yangguo, WU Wenfei, WANG Zhenfeng, GONG Zhijun. Effect of SO₂ on catalytic performance of rare earth concentrate catalyst for NH₃-SCR denitrification[J]. CIESC Journal, 2019, 70(12): 4645-4653 DOI: 10.11949/0438-1157.20190641.
焦坤灵, 赵阳国, 武文斐, 王振峰, 龚志军. SO₂对稀土精矿催化剂NH₃-SCR脱硝催化性能的影响[J]. 化工学报, 2019, 70(12): 4645-4653 DOI: 10.11949/0438-1157.20190641. DOI：

JIAO Kunling, ZHAO Yangguo, WU Wenfei, WANG Zhenfeng, GONG Zhijun. Effect of SO₂ on catalytic performance of rare earth concentrate catalyst for NH₃-SCR denitrification[J]. CIESC Journal, 2019, 70(12): 4645-4653 DOI: 10.11949/0438-1157.20190641. DOI：

摘要

抗硫性能是评价脱硝过程中催化剂性能的关键指标，研究SO

对催化剂理化特性的影响对催化剂脱硝应用具有重要意义。通过焙烧处理白云鄂博稀土精矿得到稀土精矿催化剂，利用催化剂抗硫性能实验台，结合SEM、BET、XRD和FT-IR，分析了O

、NH

、NO气氛下SO

在催化剂表面的吸附及不同SO

浓度对催化剂催化脱硝性能的影响。结果表明， SO

对稀土精矿催化剂脱硝性能有显著的促进作用，300℃时，NO转化率从28%提高至50%，350℃时，NO转化率从42%提高至75%； SEM、BET和XRD结果表明催化剂抗硫性能测试前后的物理结构和化学组成基本保持不变，稀土精矿催化剂具有较好的抗硫性能；FT-IR结果证实SO

的吸附使稀土精矿催化剂表面B酸性位点增多，催化剂对NH

的吸附能力增强，因此有利于提高催化剂活性。研究结果可为白云鄂博稀土精矿催化剂NH

-SCR脱硝应用过程中抗硫性能提供有价值的基础数据参考。

Abstract

Sulfur resistance is a key indicator for evaluating catalyst performance during denitration. It is important to study the effect of SO

on the physicochemical properties of catalysts. The rare earth concentrate catalyst was obtained by roasting the Bayan Obo rare earth concentrate. Using the sulfur resistance test bed of the catalyst and combining scanning electron microscope (SEM)

Brunner Emmett Teller(BET)

X-ray diffraction (XRD) and

in situ

Fourier transform infrared spectroscopy (FT-IR)

the adsorption of SO

on the catalyst surface under the atmosphere of O

and NO

as well as the influence of different SO

concentrations on catalytic denitrification were analyzed. The results show that SO

can significantly promote the denitrification performance of rare earth concentrate catalysts. The NO conversion rate increased from 28% to 50% at 300℃ and increased from 42% to 75% at 350℃. SEM

BET and XRD results illustrated that the surface structure and chemical composition of the catalyst remain unchanged before and after denitrification. The ra

re earth concentrate had good sulfur resistance. The FT-IR results verified that the adsorption of SO

increased B acid sites on the surface of the rare earth concentrate catalyst. The adsorption capacity of the catalyst for NH

was enhanced

contributing to increase catalyst activity. The results can provide valuable basic data reference for the anti-sulfur performance of the Bayan Obo rare earth concentrate catalyst NH

-SCR denitrification application process.

关键词

Keywords

references

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Effect of SO2 on catalytic performance of rare earth concentrate catalyst for NH3-SCR denitrification

DOI：10.11949/0438-1157.20190641

摘要

Abstract

关键词

Keywords

references

Effect of SO₂ on catalytic performance of rare earth concentrate catalyst for NH₃-SCR denitrification