메탄 촉매연소 반응에 관한 연구

백영순; 윤경호; 김형진

Journal of the Korean Industrial and Engineering Chemistry, Vol.6, No.5, 874-881, October, 1995

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메탄 촉매연소 반응에 관한 연구

A Study on Catalytic Combustion of Methane over Noble Metal Catalyst

백영순, 윤경호, 김형진

초록

알루미나에 귀금속(Pd, Pt)을 담지한 촉매를 제조하여 Pellet상에서의 메탄 연소특성 실험을 수행하였다. 본 연구에서는 촉매 연소기 운전에 관련된 여러 변수들인 귀금속 담지량, 가스의 공간속도, 그리고 가스의 공연비를 선정하여 이들이 연소 반응에 미치는 영향을 연구하였다. 촉매의 귀금속 담지량이 증가 할수록 메탄 전화율은 증가하나 1.0wt% 이상에서는 전화율의 증가가 높지 않았음이 측정되었다. 귀금속 lwt%로 담지한 촉매와 700℃ 이상의 연소온도 조건하에서 90%의 메탄전화율을 얻기 위해서는 가스의 공간속도가 Pd 금속의 경우 18,000/h 이하, Pt의 경우는 10,000/h 이하에서만 가능함을 알 수 있었다.

Alumina-supported noble metal (Pt or Pd) catalysts were prepared. The alumina-supported catalysts in the shape of pellet were tested in terms of methane combustion. The palladium supported on alumina showed higher activity as compared to the platinium supported on alumina. Behaviors of the catalysts in methane combustion were investigated as functions of noble metal content, space velocity and air-fuel ratio. It was observed that the methane conversion rate was increased with the metal weight increased up to 3.0wt%, but the slope of the increasing rate of conversion was slowed down rapidly after 1.0wt%. It was also found that 90% of methane conversion with the catalysts having lwt% metal content at the combustion temperature of above 700℃ was only possible when the space velocities were less than 18,000/hr for the Pd catalyst and 10,000/hr for the Pt catalyst, respectively.

[References]

Prasad R, Kennedy LA, Rackenstein R, Catal. Rev.-Sci. Eng., 26, 1 (1984)
Pfefferle LD, Pfefferle WC, Catal. Rev.-Sci. Eng., 29, 219 (1987)
Oh SH, Mitchell PJ, Siewert RM, J. Catal., 132, 287 (1991)
Trim DL, Appl. Catal., 7, 249 (1983)
Kesselring JP, "Advanced Combustion Methods," F.J. Weinberg, ed., 237, Academy Press, New York (1986)
Baldwin TR, Burch R, Appl. Catal., 66, 337 (1990)
Hicks RF, Young ML, Lee RG, J. Catal., 122, 280 (1990)
Trim DL, Lam CW, Chem. Eng. Sci., 35, 1405 (1980)
Yao YFY, Ind. Eng. Chem. Process Des. Dev., 19, 293 (1980)
Cullis CF, Willatt BM, J. Catal., 8, 267 (1983)
Niwa M, Awaw K, Murakani Y, Appl. Catal., 7, 317 (1983)
Seimanides S, Stoukides M, J. Catal., 98, 540 (1986)
Mizushima Y, Hori M, Appl. Catal., 88, 137 (1992)

[1] Prasad R, Kennedy LA, Rackenstein R, Catal. Rev.-Sci. Eng., 26, 1 (1984)

[2] Pfefferle LD, Pfefferle WC, Catal. Rev.-Sci. Eng., 29, 219 (1987)

[3] Oh SH, Mitchell PJ, Siewert RM, J. Catal., 132, 287 (1991)

[4] Trim DL, Appl. Catal., 7, 249 (1983)

[5] Kesselring JP, "Advanced Combustion Methods," F.J. Weinberg, ed., 237, Academy Press, New York (1986)

[6] Baldwin TR, Burch R, Appl. Catal., 66, 337 (1990)

[7] Hicks RF, Young ML, Lee RG, J. Catal., 122, 280 (1990)

[8] Trim DL, Lam CW, Chem. Eng. Sci., 35, 1405 (1980)

[9] Yao YFY, Ind. Eng. Chem. Process Des. Dev., 19, 293 (1980)

[10] Cullis CF, Willatt BM, J. Catal., 8, 267 (1983)

[11] Niwa M, Awaw K, Murakani Y, Appl. Catal., 7, 317 (1983)

[12] Seimanides S, Stoukides M, J. Catal., 98, 540 (1986)

[13] Mizushima Y, Hori M, Appl. Catal., 88, 137 (1992)