Study on low-temperature catalytic oxidation of toluene by Cu-doped MnO<italic style="font-style: italic"><sub>x</sub></italic>: Synergetic effect of Cu-Mn

LIU Xueping; HAN Taiyu; CHEN Pan; ZHU Shaoran; GAO Hongrun; LI Haiyang; SONG Zhongxian

doi:10.12434/j.issn.2097-2547.20250267

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Study on low-temperature catalytic oxidation of toluene by Cu-doped MnO_x: Synergetic effect of Cu-Mn

更新时间：2025-10-22

- Study on low-temperature catalytic oxidation of toluene by Cu-doped MnO_x: Synergetic effect of Cu-Mn
- Vol. 50, Issue 10, Pages: 100-107(2025)
- 作者机构：
  
  1.河南城建学院市政与环境工程学院，河南平顶山 467036
  2.西南化工研究设计院有限公司，四川成都 610225
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250267
  CLC： TQ426;TQ13;X511
- Received：10 June 2025，
  
  Revised：2025-08-07，
  
  Published：25 October 2025
- 稿件说明：
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刘雪平,韩太宇,陈潘等.Cu掺杂MnO_x低温催化氧化甲苯性能研究： Cu-Mn协同作用[J].低碳化学与化工,2025,50(10):100-107.

LIU Xueping,HAN Taiyu,CHEN Pan,et al.Study on low-temperature catalytic oxidation of toluene by Cu-doped MnO_x: Synergetic effect of Cu-Mn[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(10):100-107.
刘雪平,韩太宇,陈潘等.Cu掺杂MnO_x低温催化氧化甲苯性能研究： Cu-Mn协同作用[J].低碳化学与化工,2025,50(10):100-107. DOI： 10.12434/j.issn.2097-2547.20250267.

LIU Xueping,HAN Taiyu,CHEN Pan,et al.Study on low-temperature catalytic oxidation of toluene by Cu-doped MnO_x: Synergetic effect of Cu-Mn[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(10):100-107. DOI： 10.12434/j.issn.2097-2547.20250267.

摘要

挥发性有机化合物（VOCs）排放引发的环境污染问题日益严重，开发具有低温催化活性的催化剂进行VOCs治理已成为催化净化领域的研究重点。针对MnO

催化剂在低温条件下对甲苯氧化催化活性不足的问题，可通过Cu掺杂调控其结构与表面性质，并构建

Mn-O

-Cu（O

代表氧空位）协同活性位点。采用水热法制备了一系列Cu掺杂MnO

催化剂，采用XRD、FT-IR和XPS等表征了催化剂的物相组成、官能团、表面组成及化学状态等。以MnO

和CuO

为对照组，研究了催化剂的甲苯催化氧化性能。结果表明，Cu掺杂可促进Cu-Mn固溶体形成，降低催化剂结晶度，增大比表面积和结构缺陷数量，从而有利于催化剂活性位点暴露与反应物吸附。其中，

(Cu):

(Mn) = 1:9的催化剂1Cu9MnO

的表面吸附氧在表面氧物种中的占比（物质的量分数）为32.5%。在反应气主要组分为甲苯（物质的量分数为5 × 10

-4

）和空气（O

体积分数为20%）、反应气总流量为100 mL/min及空速为60000 h

-1

的条件下，1Cu9MnO

在230  °C下的甲苯转化率为90%，优于MnO

和CuO

。

Abstract

The environmental pollution caused by emission of volatile organic compounds (VOCs) has become increasingly severe

and the development of catalysts with low-temperature catalytic activity for VOCs treatment has become a research focus in the field of catalytic purification. To address the insufficient low-temperature activity of MnO

catalysts in toluene oxidation

the Cu-doping strategy was employed to regulate the structural and surface properties of MnO

and construct Mn-O

-Cu (O

represents oxygen vacancies) synergistic active sites. A series of Cu-doped MnO

catalysts were synthesized via hydrothermal method

and their phase compositions

functional groups

surface compositions and chemical states were characterized using XRD

FT-IR

XPS and so on. The catalytic oxidation performances of the catalysts were studied using MnO

and CuO

as control groups. The results show that Cu-doping can promote the formation of Cu-Mn solid solutions

reduce the crystallinities of catalysts

increase the specific surface areas and the numbers of structural defect

thereby facilitating the exposure of active sites and the adsorption of reactants. Amo

ng the catalysts

for the catalyst with

(Cu):

(Mn) of 1:9 (1Cu9MnO

)

the proportion (molar fraction) of surface adsorbed oxygen in surface oxygen species is 32.5%. Under the conditions of toluene (mole fraction of 5 × 10

-4

) and air (O

volume fraction of 20%) as main components in reaction gas

the total flow rate of reaction gas of 100 mL/min and space velocity of 60000 h

-1

the toluene conversion rate of 1Cu9MnO

at 230 ℃ is 90%

which is superior to that of MnO

and CuO

关键词

Keywords

references

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Related Author

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Related Institution

School of Municipal and Environmental Engineering, Henan University of Urban Construction

Southwest Institute of Chemical Co., Ltd.

School of Environment and Resources, Taiyuan University of Science and Technology

School of Environment and Energy, South China University of Technology

College of Environment and Ecology, Taiyuan University of Technology

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Study on low-temperature catalytic oxidation of toluene by Cu-doped MnOx: Synergetic effect of Cu-Mn

DOI：10.12434/j.issn.2097-2547.20250267

摘要

Abstract

关键词

Keywords

references

Study on low-temperature catalytic oxidation of toluene by Cu-doped MnO_x: Synergetic effect of Cu-Mn