Highly Active and Stable Pt-Loaded Ce0.75Zr0.25O2 Yolk-Shell Catalyst for Water-Gas Shift Reaction

Jae Oh Shim, Young Jun Hong, Hyun Suk Na, Won Jun Jang, Yun Chan Kang, Hyun Seog Roh

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Multishelled, Pt-loaded Ce0.75Zr0.25O2 yolk-shell microspheres were prepared by a simple spray pyrolysis process for use in the water-gas shift (WGS) reaction. The Pt-loading was optimized, obtaining highly active Pt/Ce0.75Zr0.25O2 yolk-shell nanostructures for the WGS. Of the prepared catalysts, a 2% Pt loading of the Ce0.75Zr0.25O2 yolk-shell microspheres showed the highest CO conversion. The high catalytic activity of the 2% Pt/Ce0.75Zr0.2O2 catalyst was mainly due to its easier reducibility and the maintenance of active catalytic Pt species. The Pt-loaded Ce0.75Zr0.25O2 catalyst microspheres were highly resistant to Pt sintering because of their unique yolk-shell structure. Spray pyrolysis was found to be highly efficient for the production of precious-metal-loaded, multicomponent metal oxide yolk-shell microspheres for catalytic applications.

Original languageEnglish
Pages (from-to)17239-17244
Number of pages6
JournalACS Applied Materials and Interfaces
Volume8
Issue number27
DOIs
Publication statusPublished - 2016 Jul 13

Keywords

  • Pt loading
  • reducibility
  • sintering resistance
  • spray pyrolysis
  • water-gas shift
  • yolk-shell

ASJC Scopus subject areas

  • Materials Science(all)

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