Ru/Al2O3촉매와 Ni/Al2O3촉매상에서 일산화탄소와 이산화탄소의 메탄화반응속도론

박상현; 김장희; 이태진; 김동현

HWAHAK KONGHAK, Vol.30, No.4, 423-432, August, 1992

Export Citation

Ru/Al₂O₃촉매와 Ni/Al₂O₃촉매상에서 일산화탄소와 이산화탄소의 메탄화반응속도론

Methanation Kinetics of Carbon Oxides over supported Ru and Ni Catalysts

박상현, 김장희, 이태진, 김동현

초록

루테늄과 니켈촉매에서 CO와 CO₂의 메탄화에 대한 반응속도론적인 연구를 상압과 190-220℃에서 수행하였다. CO와 CO₂ 혼합물의 메탄화반응도 같은 조건에서 조사하였다. CO의 메탄화반응에서 0.001-0.08atm의 CO 분압범위에서의 반응속도식은 N_CH4=kP_CO/(1+K_COP_CO)²로 표현되며, CO₂의 메탄화반응에서 0.02-0.2atm의 CO₂ 분압범위에서의 반응속도식은 N_CH4=kP_CO2의 0차반응으로 표현되었다. CO와 CO₂ 혼합물의 공메탄화에서 CO는 전적으로 CO₂의 메탄화를 저해하였고 CO₂는 CO의 메탄화에 전혀 영향을 끼치지 않았다. 따라서 혼합물의 공메탄화의 반응속도식은 CO만의 메탄화속도식과 동일하였다.

The kinetics of CO and CO₂ methanation on supported ruthenium and nickel catalysts were studied at atmospheric pressure and at temperatures between 190 and 220℃. The simultaneous methanation of mixtures of CO and CO₂ was also investigated at the same conditions. The rate of CH₄ formation for CO hydrogenation at partial pressures of CO between 0.001 and 0.08atm was described by the expression N_CH4=kP_CO(1+K_COP_CO)². The rate of CH₄ formation for CO₂ hydrogenation at partial pressures of CO₂ between 0.01 and 0.2atm was described by a zero-order equation N_CH4=k_CO2. It was found that in simultaneous methanation of the CO and CO₂ did not affect the methanation of CO. thys, the kinetics of the methanation of mixtures of CO and CO₂ was the same as that of CO alone.

[References]

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Lee PI, Schwarz JA, Ind. Eng. Chem. Process Des. Dev., 25, 76 (1986)
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[Referenced By]

[1] Sabatier P, Senderens JB, C.R. Acad. Sci., 134, 514 (1902)

[2] Mills GA, Steffgen FW, Catal. Rev.-Sci. Eng., 8, 159 (1973)

[3] Vannice MA, Catal. Rev.-Sci. Eng., 14, 153 (1976)

[4] Denny PJ, Whan DA, Catalysis, 2(3) (1978)

[5] Vannice MA, Catal. Sci. Technol., 3, 139 (1982)

[6] Ponec V, Catal. Rev.-Sci. Eng., 18, 151 (1978)

[7] Randhava SS, Camara EH, Rehmat A, Ind. Eng. Chem. Prod. Res. Dev., 8, 347 (1969)

[8] Randhava SS, Rehmat A, Camara EH, Ind. Eng. Chem. Process Des. Dev., 8, 482 (1969)

[9] Rehmat A, Randhava SS, Ind. Eng. Chem. Prod. Res. Dev., 9, 512 (1970)

[10] Vannice MA, J. Catal., 37, 449 (1975)

[11] Vannice MA, J. Catal., 37, 462 (1975)

[12] Bell AT, Catal. Rev.-Sci. Eng., 57, 406 (1979)

[13] Mori T, J. Phys. Chem., 90, 109 (1986)

[14] Mori T, Masuda H, Imal H, Miyamoto A, Baba S, Murakami Y, J. Phys. Chem., 86, 2753 (1982)

[15] DallaBetta RA, Shelef A, J. Catal., 48, 111 (1977)

[16] Happel J, J. Catal., 75, 317 (1982)

[17] Dixit RS, Taviarides LL, Ind. Eng. Chem. Process Des. Dev., 22, 1 (1983)

[18] Underwood RP, Bennett CO, J. Catal., 86, 245 (1984)

[19] Thompson LT, Schwank J, Curtis MD, AIChE J., 35, 109 (1989)

[20] Weatherbee GD, Bartholomew CH, J. Catal., 77, 460 (1982)

[21] Falconer JL, Zagli AE, J. Catal., 62, 280 (1980)

[22] Solymosi F, Erdohelyi A, Kocsis M, J. Chem. Soc.-Faraday Trans., 77, 1003 (1981)

[23] Dalmon JA, Martin GR, J. Chem. Soc.-Faraday Trans., 75, 1011 (1983)

[24] Weatherbee GD, Bartholomew CH, J. Catal., 77, 460 (1982)

[25] Nelder JA, Mead R, Comput. J., 7, 308 (1964)

[26] Winslow P, Bell AT, J. Catal., 86, 158 (1984)

[27] Klose J, Baerns M, J. Catal., 85, 105 (1984)

[28] VanHerwijnen T, VanDoesburg H, DeJong WA, J. Catal., 28, 391 (1973)

[29] Lee PI, Schwarz JA, Ind. Eng. Chem. Process Des. Dev., 25, 76 (1986)

[30] Wedel S, Luss D, Ind. Eng. Chem. Fundam., 23, 280 (1984)

[31] Peebles DE, Goodman DW, White JM, J. Phys. Chem., 87, 4378 (1983)

[32] Chiang JH, Hopper JR, Ind. Eng. Chem. Process Des. Dev., 22, 225 (1983)

[33] Prairie MR, Highfield JG, Renken A, Chem. Eng. Sci., 46, 113 (1991)

[34] Cant NW, Bell AT, J. Catal., 73, 257 (1982)

[35] Falconer JL, Zagli AE, Keenan CA, J. Catal., 56, 453 (1979)