Effects of metal-support interactions on catalytic performances of Pt/CeO<sub>2</sub> catalysts for CO oxidation reaction

WANG Qian; REN Zekai; DING Chuanmin; YUAN Qinbo; WU Ailian

doi:10.12434/j.issn.2097-2547.20260026

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Effects of metal-support interactions on catalytic performances of Pt/CeO₂ catalysts for CO oxidation reaction

更新时间：2026-06-24

- Effects of metal-support interactions on catalytic performances of Pt/CeO₂ catalysts for CO oxidation reaction
- Pages: 1-8(2026)
- 作者机构：
  
  1.太原理工大学化学与化工学院，山西太原 030024
  2.清创人和生态工程技术有限公司，山西太原 030032
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20260026
  CLC： TQ426;O643.3
- Received：14 January 2026，
  
  Revised：2026-02-03，
  
  Online First：24 June 2026，
- 稿件说明：
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王骞,任泽凯,丁传敏等.金属-载体间相互作用对Pt/CeO₂催化剂催化CO氧化反应性能的影响[J].低碳化学与化工,DOI:10.12434/j.issn.2097-2547.20260026.

WANG Qian,REN Zekai,DING Chuanmin,et al.Effects of metal-support interactions on catalytic performances of Pt/CeO₂ catalysts for CO oxidation reaction[J].Low-Carbon Chemistry and Chemical Engineering,DOI:10.12434/j.issn.2097-2547.20260026.
王骞,任泽凯,丁传敏等.金属-载体间相互作用对Pt/CeO₂催化剂催化CO氧化反应性能的影响[J].低碳化学与化工,DOI:10.12434/j.issn.2097-2547.20260026. DOI：

WANG Qian,REN Zekai,DING Chuanmin,et al.Effects of metal-support interactions on catalytic performances of Pt/CeO₂ catalysts for CO oxidation reaction[J].Low-Carbon Chemistry and Chemical Engineering,DOI:10.12434/j.issn.2097-2547.20260026. DOI：

摘要

当前，高效消除剧毒污染物CO是极为迫切的需求，而CO热催化氧化作为一种经济有效的净化策略已得到广泛研究。CeO

具有优异的储氧释氧性能、丰富的表面缺陷位等，是该领域极具潜力的载体材料。然而，传统CeO

基催化剂面临稳定性差、金属利用率低的问题。金属-载体强相互作用（SMSI）在提高催化剂稳定性、金属利用率方面有着卓越贡献。利用尿素热解对CeO

载体进行了预处理，随后将Pt负载于载体上，调控了SMSI，采用XRD、XPS和H

-TPR等方法对Pt/CeO

-N

催化剂进行了表征，探究了催化剂催化CO氧化反应性能。结果表明，预处理使得催化剂表面氧空位数量增大、

氧化还原性能显著增强以及SMSI增强。Pt/CeO

-N5展现出最佳的催化性能，在约260 °C下可实现CO转化率达100%，较传统Pt/CeO

-N0（未引入尿素）的CO完全转化温度降低了约40 °C。

Abstract

Currently

efficient removal of highly toxic pollutants such as CO is an extremely urgent need

and thermal catalytic CO oxidation has been extensively studied as a cost-effective purification strategy. CeO

possesses outstanding oxygen storage and release capabilities

abundant surface defect sites and other properties

and is a highly promising carrier material in this field. However

traditional CeO

-based catalysts face challenges of poor stability and low metal utilization rates. Strong metal-support interactions (SMSI) play an exceptional role in enhancing stability of catalysts and metal utilization rates. The CeO

support was pretreated by urea pyrolysis

and then Pt was loaded onto the support to regulate the SMSI. Pt/CeO

-N

catalysts were characterized by XRD

XPS

-TPR and so on

and their catalytic performances for CO oxidation reaction were investigated. The results show that pretreatment increases the number of surface oxygen vacancies on the catalyst surface

enhances the redox performances and strengthens SMSI. Pt/CeO

-N5 exhibits the best catalytic performance

achieving the CO conversion rate of 100% at about 260 ℃

which is about 40 ℃ lower than the complete CO conversion temperature of traditional Pt/CeO

-N0 (without urea).

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Effects of metal-support interactions on catalytic performances of Pt/CeO2 catalysts for CO oxidation reaction

DOI：10.12434/j.issn.2097-2547.20260026

摘要

Abstract

关键词

Keywords

references

Effects of metal-support interactions on catalytic performances of Pt/CeO₂ catalysts for CO oxidation reaction