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

doi:10.1021/acsami.6b03915

Highly Active and Stable Pt-Loaded Ce_0.75Zr_0.25O₂ 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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Multishelled, Pt-loaded Ce_0.75Zr_0.25O₂ 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/Ce_0.75Zr_0.25O₂ yolk-shell nanostructures for the WGS. Of the prepared catalysts, a 2% Pt loading of the Ce_0.75Zr_0.25O₂ yolk-shell microspheres showed the highest CO conversion. The high catalytic activity of the 2% Pt/Ce_0.75Zr_0.2O₂ catalyst was mainly due to its easier reducibility and the maintenance of active catalytic Pt species. The Pt-loaded Ce_0.75Zr_0.25O₂ 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 language	English
Pages (from-to)	17239-17244
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	27
DOIs	https://doi.org/10.1021/acsami.6b03915
Publication status	Published - 2016 Jul 13

Keywords

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

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.1021/acsami.6b03915

Cite this

@article{6fd34fd07284401caa5050bddd4e7e22,

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

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.",

keywords = "Pt loading, reducibility, sintering resistance, spray pyrolysis, water-gas shift, yolk-shell",

author = "Shim, {Jae Oh} and Hong, {Young Jun} and Na, {Hyun Suk} and Jang, {Won Jun} and Kang, {Yun Chan} and Roh, {Hyun Seog}",

note = "Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2013R1A1A1A05007370). This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (201320200000420 and 20153030091450). Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

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doi = "10.1021/acsami.6b03915",

language = "English",

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journal = "ACS applied materials & interfaces",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Highly Active and Stable Pt-Loaded Ce0.75Zr0.25O2 Yolk-Shell Catalyst for Water-Gas Shift Reaction

AU - Shim, Jae Oh

AU - Hong, Young Jun

AU - Na, Hyun Suk

AU - Jang, Won Jun

AU - Kang, Yun Chan

AU - Roh, Hyun Seog

N1 - Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2013R1A1A1A05007370). This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (201320200000420 and 20153030091450). Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/7/13

Y1 - 2016/7/13

N2 - 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.

AB - 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.

KW - Pt loading

KW - reducibility

KW - sintering resistance

KW - spray pyrolysis

KW - water-gas shift

KW - yolk-shell

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