Catalytic combustion performance of Au doping La0.8Sr0.2MnO3 perovskites

LU Hanfeng; HUANG Haifeng; LIU Huayan; CHEN Yinfei; LIU Huazhang

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Catalytic combustion performance of Au doping La_0.8Sr_0.2MnO₃ perovskites

更新时间：2025-12-10

- Catalytic combustion performance of Au doping La_0.8Sr_0.2MnO₃ perovskites
- CIESC Journal Issue 4, Pages: 892-897(2008)
- 作者机构：
  
  浙江工业大学化学工程与材料学院，绿色化学合成技术国家重点实验室培育基地,浙江,杭州,310014
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 April 2008，
  
  Published：05 April 2008
- 稿件说明：
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LU Hanfeng, HUANG Haifeng, LIU Huayan, et al. Catalytic combustion performance of Au doping La_0.8Sr_0.2MnO₃ perovskites[J]. CIESC Journal, 2008, (4): 892-897.
DOI：

LU Hanfeng, HUANG Haifeng, LIU Huayan, et al. Catalytic combustion performance of Au doping La_0.8Sr_0.2MnO₃ perovskites[J]. CIESC Journal, 2008, (4): 892-897. DOI：

摘要

采用共沉淀（CP）和沉积-沉淀法（DP）分别制备了0.5%(质量分数)金掺杂的Au-LSM和Au/LSM钙钛矿催化剂，以甲苯催化燃烧为模型反应测试催化剂活性，并用XRD、BET、H2-TPR对其进行表征。结果表明，Au掺杂并不改变La0.8Sr0.2MnO3催化剂的织构性质，但明显增强了催化剂表面氧的活动性，提高了其低温催化氧化活性。与DP法制备的Au/LSM相比，Au-LSM表现出更好的催化性能，其催化活性与商业贵金属Pd/Al2O3相当。通过对焙烧温度考察以及50 h的变温活性测试，Au-LSM催化性能并没有发生较大变化，催化剂具有良好的稳定性。

Abstract

Perovskite-type oxides of Au-LSM and Au/LSM with 0.5%(mass) Au doping were synthesized by the coprecipitation (CP) and the deposition-precipitation (DP) processes respectively.They were tested in a flow reactor for total combustion of toluene

and characterized by XRD

BET

H2-TPR.The results showed that Au doping did not affect the texture properties of La0.8Sr0.2MnO3

but Au actually enhanced the surficial oxygen mobility of catalysts

and increased catalytic oxidation activity at a low temperature.Compared with Au/LSM

Au-LSM showed better catalytic performance

and its activity was similar to that of the commercial catalyst Pd/Al2O3.Au-LSM also had good stability because its performance did not change significantly after 50 h on stream in the temperature range of 280—400℃.

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