Physico-chemical effects of cerium oxide on catalytic activity of CeO2-TiO2prepared by sol-gel method for NH3-SCR (CeO2가 졸겔법으로 합성한 CeO2-TiO2계 SCR용 촉매의 활성에 미치는 물리화학적 영향)

김부영; 신병길; Lee, Hee-Soo (이희수); CHUN，HO-HWAN (전호환)

doi:10.6111/JKCGCT.2013.23.6.320

Physico-chemical effects of cerium oxide on catalytic activity of CeO2-TiO2prepared by sol-gel method for NH3-SCR

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2013, 23(6), pp.320-324
DOI : 10.6111/JKCGCT.2013.23.6.320
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

김부영 ¹, 신병길 ¹, Lee, Hee-Soo ¹, CHUN，HO-HWAN ¹

¹부산대학교

Accredited

ABSTRACT

The effects of CeO2 on catalytic activity of CeO2-TiO2 for the selective catalytic reduction (SCR) of NOx were investigated in terms of structural, morphological, and physico-chemical analyseis. CeO2-TiO2 catalysts were synthesized with three different additions, 10, 20, and 30 wt% of CeO2, by the sol-gel method. The XRD peaks of all specimens were assigned to a TiO2 phase (anatase) and the peaks became broader with the addition of CeO2 because it was dispersed as an amorphous phase on the surface of TiO2 particles. The specific surface area of TiO2 increased with the addition of CeO2from 60.6306 m2/g to 116.2791 m2/g due to suppression of TiO2 grain growth by CeO2. The 30 wt% CeO2-TiO2 catalyst,having the strongest catalytic acid sites (BrΦnsted and Lewis), showed the highest NOx conversion efficiency of 98 % at 300oC among the specimens. It was considered that CeO2 contributes to the improvement of the NOx conversion of CeO2-TiO2 catalyst by increasing specific surface area and catalytic acid sites.

KEYWORDS

CeO2-TiO2 catalyst, Sol-gel method, Particle growth suppression, Catalytic activity

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Physico-chemical effects of cerium oxide on catalytic activity of CeO2-TiO2prepared by sol-gel method for NH3-SCR

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Physico-chemical effects of cerium oxide on catalytic activity of CeO2-TiO2prepared by sol-gel method for NH3-SCR

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