아산화질소의 선택적 촉매 제거반응을 위한 Clinoptilolite형 천연제올라이트 촉매 개발

추수태; 정우현; 조성수; Soo Tae Choo; Woo Hyun Jung; Sung SU Cho

Journal of the Korean Industrial and Engineering Chemistry, Vol.14, No.7, 1007-1010, November, 2003

Export Citation

아산화질소의 선택적 촉매 제거반응을 위한 Clinoptilolite형 천연제올라이트 촉매 개발

Development of Natural Clinoptilolite Zeolite based Catalysts for Selective Catalytic Reduction of Nitrous Oxide

추수태^†, 정우현, 조성수

고등기술연구원 플랜트엔지니어링센터, 청정공학연구팀, 용인 51 449-863

Soo Tae Choo^†, Woo Hyun Jung, and Sung SU Cho

Clean Engineering Research Team (CERT), Plant Engineering Center, Institute for Advanced Engineering (IAE), Yongin-51 449-863, Korea

E-mail:

초록

지구 온난화 가스로 알려져 있는 아산화질소(N₂O)를 제거하기 위해서 Fe, Co, 및 Cu 등의 다양한 금속이온이 교환된 국내산 clinoptilolite형 천연 제올라이트 촉매를 사용하여 고정층 흐름반응기에서 연구되었다. 공간속도 15000 h^-1의 반응조건에서 천연제올라이트 촉매들은 반응온도 400 ~ 500 ℃의 온도에서 가장 높은 활성이 관찰되었다. 본 연구에서 사용된 천연제올라이트 촉매의 경우, 선택적 촉매 환원반응을 위해 주입되는 메탄 혹은 프로판이 우수한 제거활성이 관찰되었는데 질산 혹은 아디프산 제조공정에서 발생하는 N₂O 제거반응에 효과적으로 사용될 수 있을 것으로 판단된다.

Metal (Fe, Co, and Cu) ion-exchanged natural clipnotilolite-type zeolite catalysts have been investigated to electively reduce nitrous oxide (N₂O), known well as a greenhouse gas, by reductants in the fixed-bed flow reactor system. These zeolite based catalysts show the highest catalytic activity for N₂O removal in the reaction conditions of reaction temperature of 400 ~ 500 ℃ and space velocity of 15000 h^-1. In the selective reduction of reduction of N₂O using natural zeolite catalyst, CH₄ or C₃H₈ gases seems to be used effectively as reductants to eliminate the greenhouse gas produced from the nitric acid or adipic acid manufacturing processes.

Keywords:nitrous oxide;natural zeolite;reductant;SCR;greenhouse gas

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[1] Guzman-Vargas A, Delahay G, Coq B, Appl. Catal. B: Environ., 42(4), 369 (2003)

[2] Perez-Ramirez J, Kapteijn F, Mul G, Moulijn JA, Chem. Commun., 693 (2001)

[3] Liu H, Gibbs BM, Fuel, 77(14), 1579 (1998)

[4] Choo ST, Lee YG, Nam IS, Ham SW, Lee JB, Appl. Catal. A: Gen., 200(1-2), 177 (2000)

[5] Nam IS, Choo ST, Koh DJ, Kim YG, Catal. Today, 38(2), 181 (1997)

[6] van den Brink RW, Booneveld S, Verhaak MJFM, de Bruijn FA, Catal. Today, 75(1-4), 227 (2002)

[7] Schay Z, Guczi L, Beck A, Nagy I, Samuel V, Mirajkar SP, Ramaswamy A, Pal-Borbely G, Catal. Today, 75(1-4), 393 (2002)

[8] van den Brink RW, Booneveld S, Pels JR, Bakker DF, Verhaak MJFM, Appl. Catal. B: Environ., 32(1-2), 73 (2001)

[9] Szostak R, Handbook of Molecular Seives, Van Nostrand Reinhold, New York (1992)

[10] Lee HC, Woo HC, Ryoo R, Lee KH, Lee JS, Appl. Catal. A: Gen., 196(1), 135 (2000)

[11] Lee HC, Woo HC, Chung SH, Kim HJ, Lee KH, Lee JS, J. Catal., 211(1), 216 (2002)