文章摘要
引用本文:魏笑峰,肖益鸿,蔡国辉,郑 勇,刘立哲,魏可镁.络合试剂对溶胶凝胶燃烧法合成LaCoO3的物化性能及对VOCs催化净化效果的影响[J].福州大学学报(自然科学版),2015,43(6):834~838
络合试剂对溶胶凝胶燃烧法合成LaCoO3的物化性能及对VOCs催化净化效果的影响
Influence of complexing agents by sol-gel combustion synthesis on the structural and catalytic properties of LaCoO3 perovskite for benzene total oxidation
  
DOI:10.7631/issn.1000-2243.2015.06.0834
中文关键词: 挥发性有机物  催化燃烧  钙钛矿  溶胶凝胶燃烧法  络合试剂
英文关键词: volatile organic compounds  catalytic combustion  perovskite  sol-gel combustion synthesis  complexing agents
基金项目:
作者单位
魏笑峰 福州大学化肥催化剂国家工程研究中心福建 福州 350002 
肖益鸿 福州大学化肥催化剂国家工程研究中心福建 福州 350002 
蔡国辉 福州大学化肥催化剂国家工程研究中心福建 福州 350002 
郑 勇 福州大学化肥催化剂国家工程研究中心福建 福州 350002 
刘立哲 福州大学化肥催化剂国家工程研究中心福建 福州 350002 
魏可镁 福州大学化肥催化剂国家工程研究中心福建 福州 350002 
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中文摘要:
      分别以甘氨酸、柠檬酸和丙烯酰胺辅助柠檬酸为络合试剂,采用溶胶凝胶燃烧法合成LaCoO3复合氧化物,并对它们进行XRD、BET、SEM及O2-TPD分析. 实验结果表明,三种络合剂制备得到的产物均为纯钙钛矿LaCoO3相;丙烯酰胺辅助柠檬酸溶胶凝胶燃烧法制得的LaCoO3颗粒均匀且较小,比表面积最大,其O2-TPD曲线中的峰面积最大,对苯完全催化氧化效果最好.
英文摘要:
      LaCoO3 perovskite-type mixed oxides were prepared by sol-gel combustion method. Glycine,citrate,and acrylamide assisted polymeric citrate were used as complexing agents,respectively. The catalysts were characterized by means of N2 physical adsorption,X-ray diffraction (XRD),scanning electron microscopy (SEM),and temperature-programmed desorption of O2 (O2-TPD). The catalytic result reveals that the LC-ACCA catalyst exhibited the highest activity for benzene total oxidation. The XRD result shows that single phase of LaCoO3 perovskite was obtained by all of these three kinds of complexing agents. The LC-ACCA catalyst had uniform particles with relatively small sizes from SEM observation. Moreover,this catalyst exhibited higher lattice oxygen mobility,as indicated by O2-TPD measurements. These properties are suggested to be responsible for the high activity in benzene total oxidation.
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