华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (2): 88-92,101.doi: 10.3969/j.issn.1000-565X.2018.02.013

• 化学化工 • 上一篇    下一篇

微纤包覆铜铬银浸渍炭对 CO 的催化氧化性能研究

罗超 樊栓狮 鄢瑛 张会平    

  1. 华南理工大学 化学与化工学院,广东 广州 510640
  • 收稿日期:2017-06-06 修回日期:2017-09-20 出版日期:2018-02-25 发布日期:2018-01-02
  • 通信作者: 鄢瑛( 1982-) ,女,博士,副研究员,主要从事吸附与催化反应工程和精细化学工程研究 E-mail:yingyan@scut.edu.cn
  • 作者简介:罗超( 1983-) ,男,在职博士生,讲师,主要从事大气污染物控制研究
  • 基金资助:
     国家自然科学基金资助项目( 21776106) 

A Study of Microfibrous Entrapped Cu/Cr/Ag Impregnated Carbons for CO Oxidation
 

 LUO Chao FAN Shuanshi YAN Ying ZHANG Huiping   

  1.   School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2017-06-06 Revised:2017-09-20 Online:2018-02-25 Published:2018-01-02
  • Contact: 鄢瑛( 1982-) ,女,博士,副研究员,主要从事吸附与催化反应工程和精细化学工程研究 E-mail:yingyan@scut.edu.cn
  • About author:罗超( 1983-) ,男,在职博士生,讲师,主要从事大气污染物控制研究
  • Supported by:
     Supported by the National Natural Science Foundation of China( 21776106) 

摘要: 以不锈钢纤维和商用铜铬银浸渍炭催化剂为主要原材料,采用“湿法造纸 - 高温 烧结”工艺制备了微纤包覆铜铬银浸渍炭复合材料. 利用扫描电子显微镜( SEM) 和 N2 吸 附法考察微纤复合材料的结构和浸渍炭的孔径分布与比表面积. 结果表明,浸渍炭颗粒被 较好地包覆在了不锈钢纤维形成的三维网状结构中,浸渍炭的孔结构特性基本不变,比表 面积略有增加. 利用 X 射线衍射仪( XRD) 、 X 射线光电子能谱仪( XPS) 和化学吸附仪 ( TPR) 考察微纤包覆工艺对浸渍炭活性组分的影响,结果表明大部分活性组分被还原. CO 在颗粒浸渍炭固定床、微纤包覆浸渍炭固定床以及二者床层高度比例为1∶ 1 的结构化 固定床上的催化氧化实验表明,微纤包覆过程使得商业铜铬银浸渍炭对 CO 的催化活性 降低,与复合材料表征结果相符. 

关键词: 微纤复合材料, 铜铬银浸渍炭, CO 催化氧化, 结构化固定床 

Abstract: The microfibrous entrapped Cu/Cr/Ag impregnated carbon composites ( MFC) were prepared by wet layup papermaking and sintering process with micronsized stainless steel fibers and commercial granular Cu/Cr/Ag impregnated carbons ( GIC) as main raw materials. SEM images showed that the impregnated carbons were entrapped into a well sinterlocked three-dimensional network of stainless steel fibers. Nitrogen adsorption test showed that the pore structure and specific surface area of the impregnated carbons in composites were almost the same as commercial impregnated carbons. The result of XRD,XPS and TPR all indicated that the active components of impregnated carbon were reduced. Catalytic performances for CO were investigated in structured fixed bed reactor filled with GIC and MFC with the height ratio of 1∶ 1,the experimental results showed that the conversion of CO over MFC decreased,which matched with the results of XRD,XPS and TPR. 

Key words: microfibrous composite, Cu/Cr/Ag impregnated carbon, CO oxidation, structured fixed bed 

中图分类号: