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无机材料学报

无机材料学报 >

2007 , Vol. 22 >Issue 6: 1221 - 1226

DOI: https://doi.org/10.3724/SP.J.1077.2007.01221

研究论文

金属丝网型 La0.8Sr0.2MnO3催化剂的制备及其表征

  • 谢晶 ,
  • 卢晗锋 ,
  • 刘华彦 ,
  • 李秋菊 ,
  • 陈银飞
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  • (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, 杭州 310014)

收稿日期: 2006-11-27

  修回日期: 2007-01-09

  网络出版日期: 2007-11-20

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Preparation and Characterization of Wire-mesh Catalyst Coated by La0.8Sr0.2MnO3

  • XIE Jing ,
  • LU Han-Feng ,
  • LIU Hua-Yan ,
  • LI Qiu-Ju ,
  • CHEN Yin-Fei
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  • (State Key Laboratory Breeding Base of Green Chemistry-SynthesisTechnology, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China)

Received date: 2006-11-27

  Revised date: 2007-01-09

  Online published: 2007-11-20

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摘要

以316L不锈钢丝网为基材, 利用电泳沉积技术对丝网表面进行改性, 考察了添加剂浓度、电压加压方式、热处理温度对铝粉在丝网表面包覆效果的影响, 制备出表面规整、高粘结强度的Al2O3/Al载体膜, 在30min超声振荡后, 载体膜脱落率仅为0.5wt%; 结合表面浸涂技术, 在丝网上涂覆纳米La0.8Sr0.2MnO3, 通过SEM、XRD、BET等手段对催化剂进行表征, 发现丝网表面催化剂负载均匀, 比表面积达到119.4m2/g, 在30min超声振荡后, 脱落率为5.0wt%. 催化燃烧性能测试表明, La0.8Sr0.2MnO3在不锈钢丝网上有较好的活性, 高空速、高浓度的甲苯在400℃基本能被完全燃烧.

关键词： 金属丝网; 电泳沉积; La0.8Sr0.2MnO3; 催化燃烧

本文引用格式

谢晶 , 卢晗锋 , 刘华彦 , 李秋菊 , 陈银飞 . 金属丝网型 La0.8Sr0.2MnO3催化剂的制备及其表征[J]. 无机材料学报, 2007 , 22(6) : 1221 -1226 . DOI: 10.3724/SP.J.1077.2007.01221

Abstract

A well-adhered and uniform Al2O3/Al layer with only 0.5wt% lost after 30min vibration was formed on the 316L wire mesh surface after electrophoretic deposition and thermal treatment. The effects of concentration of additives, the way of applied voltage, temperature of thermal treatment on the binding strength of surface layer were investigated. In addition, La0.8Sr0.2MnO3 obtained from the method of co-deposition were wash-coated onto the Al2O3/Al-wire mesh. The wire-mesh catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET). The results show that the La0.8Sr0.2MnO3 is combined strongly with wire mesh and only lost 5.0wt% after 30min vibration, and its BET surface area reaches 119.4m2/g when mixed with gamma-Al2O3. Then the wire-mesh catalysts were applied for catalytic combustion of toluene, the La0.8Sr0.2MnO3 coated onto wire mesh shows good activity, and the toluene can be cleared up at 400℃ in high space velocity and high concentration condition.

Key words： metal wire mesh; electrophoretic deposition; La0.8Sr0.2MnO3; catalytic combustion

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