Removal of toluene using non-thermal plasma coupled with Mn-Ce/La/γ-Al<sub>2</sub>O<sub>3 </sub>catalysts

LIANG Wenjun; GUO Shuqing; WU Hongmei; LI Jian; HE Hong

doi:10.11949/j.issn.0438-1157.20161656

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Removal of toluene using non-thermal plasma coupled with Mn-Ce/La/γ-Al₂O₃catalysts

更新时间：2025-12-10

- Removal of toluene using non-thermal plasma coupled with Mn-Ce/La/γ-Al₂O₃catalysts
- CIESC Journal Issue 7, Pages: 2755-2762(2017)
- 作者机构：
  
  北京工业大学区域大气复合污染防治北京市重点实验室,北京,100124
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161656
  CLC： 511
- Online First：05 July 2017，
  
  Published：05 July 2017
- 稿件说明：
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LIANG Wenjun, GUO Shuqing, WU Hongmei, et al. Removal of toluene using non-thermal plasma coupled with Mn-Ce/La/γ-Al₂O₃catalysts[J]. CIESC Journal, 2017, (7): 2755-2762. DOI: 10.11949/j.issn.0438-1157.20161656.
DOI：

LIANG Wenjun, GUO Shuqing, WU Hongmei, et al. Removal of toluene using non-thermal plasma coupled with Mn-Ce/La/γ-Al₂O₃catalysts[J]. CIESC Journal, 2017, (7): 2755-2762. DOI: 10.11949/j.issn.0438-1157.20161656. DOI：

摘要

采用自制线管式介质阻挡放电反应器，针对非热等离子体协同Mn-Ce/La/γ-Al2O3催化剂对低浓度甲苯的去除开展研究。研究中制备了Mn/γ-Al2O3、Mn-Ce/γ-Al2O3、Mn-La/γ-Al2O3催化剂，从甲苯去除率、产物O3生成、COx选择性及其他副产物生成情况考察比较了空管放电、协同催化剂放电时催化降解甲苯性能，并对催化剂进行了BET、SEM、H2-TPR和ICP-OES表征研究。结果表明：稀土助剂的加入有助于提高甲苯去除率及降低程度，且La催化性能优于Ce.，当外加电压22 kV、气量6 L·min-1、甲苯初始浓度600 mg·m-3时，Mn-La/γ-Al2O3催化剂对甲苯去除率达到72.74%。H2-TPR结果表明，稀土助剂的加入提高了催化剂低温活性及储氧能力，添加La的效果优于Ce。催化剂有助于抑制副产物O3生成，提高CO2和COx选择性。

Abstract

The removal of low concentrations of toluene using non-thermal plasma (NTP) coupled with Mn-Ce/La/γ-Al2O3 catalysts was investigated in this study. Mn/γ-Al2O3 catalyst

Mn-Ce/γ-Al2O3 catalyst and Mn-La/γ-Al2O3 catalyst were prepared for the experiment. The removal efficiency of toluene

generation of O3

COx selectivity for different reactors were studied. The catalysts were characterized by BET

SEM

H2-TPR and ICP-OES. The results showed that the rare earth catalysts could effectively improve the removal efficiency of toluene and the degree of mineralization. Mn-La/γ-Al2O3 had the better catalytic performance than Mn-Ce/γ-Al2O3. The removal efficiency of toluene for the Mn-La/γ-Al2O3 catalyst was 72.74% under the initial concentration of toluene of 600 mg·m-3

discharge voltage of 22 kV and gas flow rate of 6 L·min-1. Moreover

H2-TPR results indicated that the low-temperature activity and capability of O3 adsorption enhanced with the loading of rare earth catalysts. The catalysts were contributed to the decomposition of O3 and the enhancement of selectivity of CO2 and COx.

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Removal of toluene using non-thermal plasma coupled with Mn-Ce/La/γ-Al2O3 catalysts

DOI：10.11949/j.issn.0438-1157.20161656

摘要

Abstract

关键词

Keywords

references

Removal of toluene using non-thermal plasma coupled with Mn-Ce/La/γ-Al₂O₃catalysts