Mn基脱硝催化剂抗水抗硫改性的模拟与实验研究

王金玉; 朱怀志; 安泽文; 巩建; 王翠苹

doi:10.11949/0438-1157.20190690

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Mn基脱硝催化剂抗水抗硫改性的模拟与实验研究

催化、动力学与反应器 | 更新时间：2026-07-24

- Mn基脱硝催化剂抗水抗硫改性的模拟与实验研究
- Simulation and experimental study on modification of water and sulfur resistance by Mn-based denitration catalyst
- 化工学报 2019年70卷第12期页码：4635-4644
- 作者机构：
  
  青岛大学机电工程学院能源与动力工程系，山东青岛 266071
- 作者简介：
  
  王金玉（1994—），男，硕士研究生，1273009651@qq.com
  王翠苹（1969—），女，博士，教授，wangcuiping@tsinghua.org.cn
- 基金信息：
  
  国家自然科学基金项目(51676102)
- DOI：10.11949/0438-1157.20190690
  中图分类号： TQ 534.9
- 收稿：2019-06-19，
  
  修回：2019-09-30，
  
  网络首发：2020-06-09，
  
  纸质出版：2019-12-05
- 稿件说明：
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王金玉, 朱怀志, 安泽文, 巩建, 王翠苹. Mn基脱硝催化剂抗水抗硫改性的模拟与实验研究[J]. 化工学报, 2019, 70(12): 4635-4644

WANG Jinyu, ZHU Huaizhi, AN Zewen, GONG Jian, WANG Cuiping. Simulation and experimental study on modification of water and sulfur resistance by Mn-based denitration catalyst[J]. CIESC Journal, 2019, 70(12): 4635-4644
王金玉, 朱怀志, 安泽文, 巩建, 王翠苹. Mn基脱硝催化剂抗水抗硫改性的模拟与实验研究[J]. 化工学报, 2019, 70(12): 4635-4644 DOI： 10.11949/0438-1157.20190690.

WANG Jinyu, ZHU Huaizhi, AN Zewen, GONG Jian, WANG Cuiping. Simulation and experimental study on modification of water and sulfur resistance by Mn-based denitration catalyst[J]. CIESC Journal, 2019, 70(12): 4635-4644 DOI： 10.11949/0438-1157.20190690.

摘要

为考察ZSM-5分子筛作载体和Ce掺杂对催化剂低温脱硝活性及抗水抗硫性的影响，通过分子动力学模拟和实验研究的手段研究了载体类型、掺杂Ce对催化剂性能的影响。分子动力学模拟发现，ZSM-5分子筛作载体较γ-Al

明显抑制H

O在其表面的吸附，在活性组分中添加Ce既抑制H

O在其表面的吸附，又减轻SO

对催化剂的毒化作用。实验研究发现，Mn-Fe-Ce/ZSM-5催化剂性能更优，Ce的添加对提高催化剂的低温脱硝活性和抗水抗硫性能具有明显的积极作用，ZSM-5分子筛作为载体也对提高催化剂抗水性能起到重要作用。通过SEM、XRD、BET、TG-DTG等表征手段和BaCl

鼓泡实验对Mn-Fe-Ce/ZSM-5催化剂抗硫性提高的原因分析发现，添加Ce使催化剂储氧释氧能力提高，将烟气中的SO

氧化为SO

并被烟气携带，避免了SO

与催化剂活性组分的反应，则催化剂表面的活性组分不被破坏，保证了催化剂的催化反应性能。

Abstract

To investigate the effect of ZSM-5 zeolite as carrier and Ce doping on the low temperature denitrification activity and water/sulfur resistance of the catalyst

the effects of carrier type and Ce doping on the performance of the catalyst were studied by molecular dynamics simulation and experimental research. Molecular dynamics simulations showed that ZSM-5 zeolite as a carrier significantly inhibited the adsorption of H

O on its surface compared with γ-Al

. Adding Ce to the active component not only inhibited the adsorption of H

O on its surface

but also mitigated the poisoning effect of SO

on the catalyst. The experimental study found that Mn-Fe-Ce/ZSM-5 has better denitration activity under low temperature and water/sulfur resistance. The addition of Ce has a positive effect on improving the low temperature activity and water/sulfur resistance of the catalyst. ZSM-5 zeolite as carriers also play an important role in improving the water resistance of the catalyst. The SEM

XRD

BET

TG-DTG and other characterization methods and BaCl

bubbling experiments were carried out to analyze the mechanisms for the improvement of sulfur resistance of Mn-Fe-Ce/ZSM-5 catalyst. It was found that the addition of Ce increased the oxygen storage and oxygen release capacity of the catalyst. Oxidation of SO

in the flue gas to SO

avoids the reaction of SO

with the active component

so that the active component on the surface of the catalyst is not destroyed

and the catalytic reaction performance of the catalyst is ensured.

关键词

Keywords

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