Characterization and catalytic performance of copper-based WGS catalysts derived from copper ferrite

Xingyi Lin, Yong Zhang, Ling Yin, Chongqi Chen, Yingying Zhan, Dalin Li

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

A series of copper ferrite-based catalysts were prepared by the co-precipitation method using KOH, K2CO3, Na 2CO3, NaOH, and NaHCO3 as the precipitants and their physicochemical properties were investigated by N2- physisorption, SEM, XRD, FT-IR, Raman, H2-TPR, N2O decomposition, and CO2-TPD. The characterization results indicated that the utilization of KOH as precipitant was favorable for the formation of copper ferrite, which exhibited smaller crystalline and higher reducibility. The catalytic test in the water-gas shift reaction (WGSR) revealed that the sample prepared with the KOH as precipitant exhibited higher activity and thermal stability than the other samples. It was suggested that higher Cu dispersion, larger amount of surface copper atoms, weak basic sites, and strong interaction between copper and iron oxides resulting from the copper ferrite were responsible for the high catalytic performance.

Original languageEnglish
Pages (from-to)6424-6432
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number12
DOIs
Publication statusPublished - 2014 Apr 15

Keywords

  • Copper ferrite
  • Cu dispersion
  • Different precipitants
  • WGSR
  • Weak basic sites

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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