산화철 허니컴 구조 촉매를 활용한 일산화탄소 저온 산화반응 연구

이동헌; 엄성현; Donghun Lee; Sunghyun Uhm

Applied Chemistry for Engineering, Vol.30, No.2, 151-154, April, 2019

DOI10.14478/ace.2018.1113 Export Citation

산화철 허니컴 구조 촉매를 활용한 일산화탄소 저온 산화반응 연구

Honeycomb-structured Fe2O3 Catalysts for Low-temperature CO Oxidation

이동헌, 엄성현^†

고등기술연구원 플랜트엔지니어링센터

Donghun Lee, and Sunghyun Uhm^†

Plan Engineering Center, Institute for Advanced Engineering (IAE), Yongin-si 17180, Korea

E-mail:

초록

코디어라이트 허니컴 표면에 알루미나 워시코트 지지체를 형성시키고 비교적 단순한 건식 코팅 공정으로 산화철 촉매를 코팅함으로써 실제 환경에 효과적으로 적용이 가능한 모노리스 구조 촉매를 제조하였다. 허니컴 통로 벽 구석으로 형성된 워시코트 알루미나 미세 기공으로 균일하게 코팅된 산화철 촉매를 확인하였으며, 일산화탄소 산화 반응에 적용하기 위하여 산화철 촉매의 열처리 효과를 검증하였다. 350 ℃ 부근에서 열처리한 산화철 촉매가 가장 우수한 촉매 성능을 발휘하였고, 200 ℃ 이상의 온도 영역에서 100% 전환율을 나타내었다.

We report the effective fabrication processes for more practical monolith catalysts consisting of washcoated alumina on a cordierite honeycomb monolith (CHM) and iron oxides nanoparticles in the alumina prepared by a simple dry coating method. It is confirmed that iron oxide nanoparticles were well deposited into the mesopore of washcoated alumina which is formed on the corner wall of honeycomb channel, and the effect of annealing temperature was evaluated for carbon monoxide oxidation catalysts. Fe2O3/γ-Al2O3/CHM catalysts annealed at 350 ℃ exhibited the most enhanced catalytic activity, 100% conversion efficiency at more than 200 ℃ operating temperature.

Keywords:CO oxidation;Fe2O3;Honeycomb structure;Monolith;Catalyst utilization

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[1] Ko S, Kim DH, Kim YD, Park D, Jeong W, Lee DH, Lee JY, Kwon SB, Appl. Chem. Eng., 24(5), 513 (2013)

[2] Park JH, Kim YJ, Cho KH, Kim ES, Shin CH, Clean Technol., 17(1), 41 (2011)

[3] Kim IH, Seo HO, Park EJ, Han SW, Kim YD, Sci. Rep., 7, 40497 (2017)

[4] Han SW, Kim IH, Kim DH, Park KJ, Park EJ, Jeong MG, Kim YD, Appl. Surf. Sci., 385, 597 (2016)

[5] Han SW, Kim DH, Jeong MG, Park KJ, Kim YD, Chem. Eng. J., 283, 992 (2016)

[6] Schryer DR, Hoflund GB, NASA Conference Publication 3076 (1990).

[7] Mitchell S, Michels NL, Pe.rez-Ramirez J, Chem. Soc. Rev., 42, 6094 (2013)

[8] Baldovino-Medrano VG, Le MT, Van Driessche I, Bruneel E, Alcazar C, Colomer MT, Moreno R, Florencie A, Farin B, Gaigneaux EM, Catal. Today, 246, 81 (2015)

[9] Akhtar F, Andersson L, Ogunwumi S, Hedin N, Bergstrom L, J. European Ceram. Soc., 34, 1643 (2014)

[10] Adamowska M, Costa PD, J. Nanopart., 601941 (2015).

[11] Seo MH, Kim SY, Kim YD, Uhm SH, Appl. Chem. Eng., 29(1), 18 (2018)

[12] Sun ZX, Zheng TT, Bo QB, Du M, Forsling W, J. Colloid Interface Sci., 319(1), 247 (2008)

[13] Oh C, Im H, Kim I, New Renew. Energy, 10, 29 (2014)

[14] Panayiotou GP, Bianchi G, Georgiou G, Aresti L, Argyrou M, Agathokleous R, Tsamos KM, Tassou SA, Florides G, Kalogirou S, Christodoulides P, Energy Procedia, 123, 335 (2017)