Microstructural property and catalytic activity of nano-sized MnOx-CeO2/ TiO2 for NH3-SCR (선택적 촉매 환원법 재료로서 나노 사이즈 MnOx-CeO2/TiO2 촉매에 대한 미세구조적 특성과 촉매활성 평가)

Sungchul Hwang (황성철); Seung-hyeon Jo (조승현); Min-Chul Shin (신민철); Cha Jin Sun (차진선); Inwon Lee (이인원); Hyun Park (박현); Heesoo Lee (이희수)

doi:10.6111/JKCGCT.2016.26.3.115

Microstructural property and catalytic activity of nano-sized MnOx-CeO2/ TiO2 for NH3-SCR

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2016, 26(3), pp.115~120
DOI : 10.6111/JKCGCT.2016.26.3.115
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : February 23, 2016
Accepted : May 13, 2016
Published : June 30, 2016

Sungchul Hwang ¹, Seung-hyeon Jo ¹, Min-Chul Shin ², Cha Jin Sun ², Inwon Lee ¹, Hyun Park ¹, Heesoo Lee ¹

¹부산대학교
²한국산업기술시험원

Accredited

ABSTRACT

CeO2 is used as a co-catalyst with TiO2 to improve the catalytic activity of MnOx and characterization of nanosized powder is identified with de-NOx efficiency. A comparison between MnOx-CeO2/TiO2 and single CeO2 was conducted in terms of microstructural analysis to observe the behavior of CeO2 in the ternary catalyst. The MnOx-CeO2/TiO2 catalyst was synthesized by sol-gel method and the average particle size of the single CeO2 is about 285 μm due to the low thermal stability, whereas the particle size MnOx-CeO2/TiO2 is about 130 nm. The strong interaction between Ce and Ti was identified through the EDS mapping by transmission electron microscopy (TEM). The improvement about 20 % of de-NOx efficiency is observed in the low-temperature (150 o C~250 o C) and vigorous oxygen exchange by well-dispersed CeO2 is the reason of catalytic activity improvement.

KEYWORDS

Low temperature SCR, MnOx-CeO2/TiO2, Microstructural property, Local atomic structure, EXAFS

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Journal of the Korean Crystal Growth and Crystal Technology 2025 KCI Impact Factor : 0.14 KCI-WoS Impact Factor : 0.45

Microstructural property and catalytic activity of nano-sized MnOx-CeO2/ TiO2 for NH3-SCR

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Journal of the Korean Crystal Growth and Crystal Technology 2025 KCI Impact Factor : 0.14 KCI-WoS Impact Factor : 0.45

Microstructural property and catalytic activity of nano-sized MnOx-CeO2/ TiO2 for NH3-SCR

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