Study on the NO<i><sub>x</sub></i>-Chlorobenzene Synergistic Removal Performance of Sulfur and Water Resistance Ternary Composite Catalyst

LIN Jingren; ZONG Yuhao; YUE Yanwei; LIU Meng; WEI Hongqi

doi:10.19805/j.cnki.jcspe.2026.240813

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Study on the NO_x-Chlorobenzene Synergistic Removal Performance of Sulfur and Water Resistance Ternary Composite Catalyst

更新时间：2026-10-10

- Study on the NO_x-Chlorobenzene Synergistic Removal Performance of Sulfur and Water Resistance Ternary Composite Catalyst
- Chinese Journal of Power Engineering Vol. 46, Issue 4, Pages: 181-190(2026)
- 作者机构：
  
  1. 大唐南京环保科技有限责任公司,江苏,南京,211100
  2. 东南大学能源与环境学院,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.240813
  CLC： X511
- Published：2026
- 稿件说明：
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林静仁, 纵宇浩, 岳彦伟, 刘猛, 韦红旗. 抗硫抗水性三元复合催化剂脱硝协同氯苯脱除性能研究[J]. 动力工程学报, 2026, 46(4): 181-190.
林静仁, 纵宇浩, 岳彦伟, 刘猛, 韦红旗. 抗硫抗水性三元复合催化剂脱硝协同氯苯脱除性能研究[J]. 动力工程学报, 2026, 46(4): 181-190. DOI： 10.19805/j.cnki.jcspe.2026.240813.

DOI： 10.19805/j.cnki.jcspe.2026.240813

摘要

针对钢铁烧结、垃圾焚烧等烟气中氮氧化物(NOx)与氯代芳香化合物协同脱除难题

以及现有商用催化剂活性温度窗口偏高、易生成剧毒副产物的问题

以氯苯(CB)为氯代芳香化合物替代物

开展复合金属氧化物催化剂的低温协同脱除性能研究。研究对象为CeMnNb三元复合金属氧化物催化剂

采用共沉淀法制备不同Ce/Nb物质的量比的催化剂样品

通过固定床活性测试系统考察反应温度、氨氮比(NSR)、O2体积分数、空速等操作参数的影响

结合X射线光电子能谱(XPS)表征探究催化剂在H2O和SO2存在下的结构演变与抗硫抗水机理。结果表明:在优化条件(反应温度为280 ℃

NH3、NO、CB、O2的体积分数为600×10-6、600×10-6、300×10-6、8%

空速为60 000 h-1)下

Ce、Mn、Nb的物质的量比为1∶1∶2的CeMnNb催化剂可实现97.2%的CB脱除率和88.3%的NOx转化率;H2O和SO2对催化剂协同脱除性能均有抑制作用

且共存时抑制更显著

其中SO2的毒害作用不可逆;表征显示

3种反应条件下催化剂中Mn4+相对含量均显著降低

H2O存在时Cl与低价Mn形成Mn-Cl键

SO2存在时表面有机氯相对含量上升

而H2O与SO2共存时易形成硫酸盐

可减少含氯化合物沉积。

Abstract

In response to the challenges associated with the synergistic removal of nitrogen oxides (NOx) and chlorinated aromatic compounds from flue gases generated during steel sintering

waste incineration

and other processes

as well as the issues with existing commercial catalysts

such as a relatively high active temperature window and the tendency to produce highly toxic by-products

a study was conducted on the low-temperature synergistic removal performance of composite metal oxide catalysts

using chlorobenzene (CB) as a surrogate for chlorinated aromatic compounds. The research focused on a CeMnNb ternary composite metal oxide catalyst. Catalyst samples with varying Ce/Nb molar ratios were prepared via the co-precipitation method. The effects of operating parameters

including reaction temperature

ammonia-nitrogen ratio (NSR)

O2 volume fraction

and space velocity

were investigated using a fixed-bed activity testing system. Additionally

X-ray photoelectron spectroscopy (XPS) characterization was employed to explore the structural evolution and sulfur/water resistance mechanisms of the catalyst in the presence of H2O and SO2. Results demonstrate that under the optimized condition (a reaction temperature of 280 ℃

volume fractions of NH3

CB and O2 of 600×10-6

600×10-6

300×10-6

and 8%

respectively

and a space velocity of 60 000 h-1)

the CeMnNb catalyst with a Ce/Mn/Nb molar ratio of 1∶1∶2 can achieve a CB removal efficiency of 97.2% and a NOx conversion efficiency of 88.3%. Both H2O and SO2 are found to inhibit the synergistic removal performance of the catalyst

with a more pronounced inhibitory effect observed when they coexist. Notably

the poisoning effect of SO2 is irreversible. XPS characterization results reveal that the relative content of Mn4+ in the catalyst decreases significantly under all three reaction conditions. In the presence of H2O

Cl formes Mn-Cl bonds with low-valent Mn species. When SO2 is present

the relative content of surface organic chlorine increases. However

when H2O and SO2 coexist

sulfates are readily formed

which is conductive to reduce the deposition of chlorinated compounds.

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Study on the NOx-Chlorobenzene Synergistic Removal Performance of Sulfur and Water Resistance Ternary Composite Catalyst

DOI：10.19805/j.cnki.jcspe.2026.240813

摘要

Abstract

关键词

Keywords

references

Study on the NO_x-Chlorobenzene Synergistic Removal Performance of Sulfur and Water Resistance Ternary Composite Catalyst