| Literature DB >> 27315135 |
Jae-Oh Shim1, Young Jun Hong2, Hyun-Suk Na1, Won-Jun Jang1, Yun Chan Kang2, Hyun-Seog Roh1.
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.Entities:
Keywords: Pt loading; reducibility; sintering resistance; spray pyrolysis; water−gas shift; yolk−shell
Year: 2016 PMID： 27315135 DOI： 10.1021/acsami.6b03915
Source DB: PubMed Journal: ACS Appl Mater Interfaces ISSN： 1944-8244 Impact factor: 9.229