发电技术 ›› 2022, Vol. 43 ›› Issue (6): 901-907.DOI: 10.12096/j.2096-4528.pgt.22014

• 新能源 • 上一篇    下一篇

富氢气体脱除CO催化剂的制备及性能研究

王海光, 刘永峰, 张军   

  1. 北京建筑大学机电与车辆工程学院,北京市 海淀区 100044
  • 收稿日期:2022-02-11 出版日期:2022-12-31 发布日期:2023-01-03
  • 作者简介:王海光(1980),男,博士研究生,研究方向为氢能与燃料电池技术,richgas@126.com
    刘永峰(1973),男,博士,教授,研究方向为氢能与车辆燃料电池技术,本文通信作者,liuyongfeng@bucea.edu.cn
    张军(1972),男,博士,教授,研究方向为车辆/轨道系统动力,zhangjun611@bucea.edu.cn
  • 基金资助:
    国家自然科学基金项目(51976007)

Preparation and Its Performance of Catalyst for CO Removal From Hydrogen Rich Gas Mixture

Haiguang WANG, Yongfeng LIU, Jun ZHANG   

  1. School of Mechanical-Electronic and Vehicle Engineering, Beijing University of Civil Engineering and Architecture, Haidian District, Beijing 100044, China
  • Received:2022-02-11 Published:2022-12-31 Online:2023-01-03
  • Supported by:
    National Natural Science Foundation of China(51976007)

摘要:

通过使用不同浓度的碳酸铵溶液沉淀硝酸铝溶液,制备出结构和性质不同的氧化铝载体,然后在其上负载钴,得到用于脱除富氢气体中CO的催化剂。表征和评价结果表明,通过改变碳酸铵的浓度,可以简洁高效地控制和优化氧化铝前驱体的物相组成,调整氧化铝的结构、形貌、织构性质和孔径分布,进而实现调控负载钴的颗粒大小、还原度、分散度及表面化学性质等,最终优化了富氢气体脱除CO的催化性能,CO残留量仅为0.2 nmol/L,完全满足Pt电极燃料电池的使用要求。

关键词: 燃料电池, 孔径分布, 钴粒径, CO脱除, 氧化铝, 钴基催化剂

Abstract:

Alumina supports with different structures and properties were prepared by precipitating aluminum nitrate solution with different concentrations of ammonium carbonate solution, and then cobalt was loaded on them to obtain a catalyst for removing CO from hydrogen rich gas. The characterization and evaluation results show that the phase composition of alumina precursor can be simply and efficiently controlled and optimized, the structure, morphology, texture properties and pore size distribution of alumina can be adjusted, and thus the particle size, reduction, dispersion and surface chemical properties of loaded cobalt can be adjusted, by changing the concentration of ammonium carbonate. Finally, the catalytic performance of CO removal from hydrogen rich gas can be optimized, and the residual amount of CO is only 0.2 nmol/L, fully meeting the use requirements of Pt electrode fuel cell.

Key words: fuel cell, pore size distribution, cobalt particle size, CO removal, alumina, cobalt-based catalyst

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