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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (24): 3037-3042.DOI: 10.6023/A1104251 上一篇    

研究简报

多周期脱硫/再生对脱硫剂Ce-Fe/ZnO表面结构及再生性能影响

邵纯红*,1, 李芬2, 王路3, 庞静1, 王伟1   

  1. (1黑龙江工程学院土木与建筑工程学院 哈尔滨 150050)
    (2哈尔滨理工大学化学与环境工程学院 哈尔滨 150040)
    (3哈尔滨工业大学食品科学与工程学院 哈尔滨 150090)
  • 投稿日期:2011-04-25 修回日期:2011-09-16 发布日期:2011-09-26
  • 通讯作者: 邵纯红 E-mail:2004hongcs@126.com
  • 基金资助:

    室温除臭剂的研制及除臭机理研究;纳米室温脱硫剂再生性研究

Effect of Multi-cycle Desulfurization and Regeneration on Surface Structure and Regeneration Performance of Desulfurizer Ce-Fe/ZnO

Shao Chunhong*,1; Li Fen2; Wang Lu3; Pang Jing1; Wang Wei1   

  1. (1 Civil Engineering Department, Heilongjiang Institute of Technology, Harbin 150050)
    (2 School of Chemistry and Environment Engineering, Harbin University of Science and Technology, Harbin 150040)
    (3Department of Food Science and Engineering, Harbin Institute of Technology, Harbin 150090)
  • Received:2011-04-25 Revised:2011-09-16 Published:2011-09-26
  • Contact: shao chunhong E-mail:2004hongcs@126.com

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794

被引次数

4

通过透射电子显微镜(TEM), X射线衍射(XRD), X射线光电子能谱(XPS)等技术对多周期脱硫/再生后CFZ脱硫剂微观结构进行了表征, 分析脱硫剂经多周期脱硫/再生结构发生的变化, 从微观结构角度探讨脱硫剂结构的变化对脱硫性能的影响. 结果表明, 第一次再生后脱硫剂的形貌和粒径变化不大, 比表面积减小66.8%, 孔分布发生较大变化, 较大和较小孔径明显减少, 10～50 nm孔所占比例增加44.6%, 再生过程产生硫酸盐|2～5次再生后脱硫剂的结构变化不大, 脱硫性能趋于稳定, 表明脱硫剂结构和再生过程产生的硫酸盐对脱硫剂表面的覆盖是影响脱硫性能的主要因素|经5次再生, 6次脱硫的累计硫容为12.8%, 是新鲜脱硫剂1次脱硫硫容的5.56倍.

关键词: 铈掺杂, 铁掺杂, 氧化锌, 常温脱硫, 再生

The micro structure of CFZ desulfurizer after desulfurization and regeneration in multi-cycle has been characterized by means of transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectrometry (XPS). The variation of the multi-cycle desulfurization and regeneration structure of desulfurzer has been analyzed as well. Therefore, with a view of micro structure, the effect of the variation of desulfurizer structure upon the performance of desulfurizer has been observed. It is demonstrated that the morphology was not changed greatly, the specific surface area decreased to 66.8%. However, the distributions of pores has been modified a great deal, and apparently, the larger and smaller pore sizes appeared to reduce conspicuously, and the pores of 10～50 mm increased up to 44.6%. During the regeneration, the sulfate has been produced. It is proven that the structure of desulfurizer was not modified too much after regeneration desulfurization from 2 to 5 times of regeneration, and the performance of desulfurizer reached to stability. Therefore, it is concluded that the main factors to the perfommance of the desulfurizer are of both the surface structure of the desulfurizer and the coverage of desulferizer surface with the sulfate in regeneration. And the accumulated sulfur capacity is of 12.8% after six-times of desulfurization and five-times of regeneration, which is 5.56 times that of fresh desulfurizer in one time of desulfurization.

Key words: Ce doped, Fe doped, zinc oxide, ambient temperature, regeneration