CO HYDROGENATION OVER POTASSIUM-PROMOTED Fe/CARBON CATALYSTS

Yoon KJ; Kim EJ

Korean Journal of Chemical Engineering, Vol.12, No.2, 221-227, April, 1995

The effects of potassium on the catalytic behavior in CO hydrogenation over K-promoted Fe/carbon catalysts having low K/Fe ratios were investigated. Even though the doses of potassium were low the promotional effects were pronounced, especially on the olefin-to-paraffin ratio, and the C₂ to C₄ olefin selectivities of the K-promoted catalysts were as high as 51 to 66 mol%. Over the catalysts having no or low potassium content the olefin-to-paraffin ratio and the ratio of the CO₂ formation rate to the rate of CO conversion to hydrocarbons remained roughly the same regardless of temperature, while over the K-promoted catalysts having higher potassium content they increased with temperature. Formation of significant amounts of filamentous carbon was observed in the K-promoted catalysts; however, the carbon deposition did not appear to affect the inherent activity and selectivity of the K-promoted catalysts.

Keywords:CO Hydrogenation;Carbon Support;Iron;Potassium-promoted;Low Potassium

[References]

Amelse JA, Schwartz LH, Butt JB, J. Catal., 72, 95 (1981)
Anderson RB, "Catalysis," Vol. 4, p. 119, Emmett, P.H., eds., Reinhold, New York (1956)
Anderson RB, "The Fischer-Tropsch Synthesis," Chaps. 3, 4 and 5, Academic Press, Orlando (1984)
Bartholomew CH, Catal. Rev.-Sci. Eng., 24, 67 (1982)
Boudart M, Delbouille A, Dumesic JA, Khammouma S, Topsoe H, J. Catal., 37, 486 (1975)
Chen AA, Vannice Ma, Phillips J, J. Phys. Chem., 91, 6257 (1987)
Chen AA, Phillips J, Venter JJ, Vannice MA, J. Catal., 118, 443 (1989)
Dry ME, "The Fischer-Tropsch Synthesis," in "Catalysis: Science and Technology," Vol. 1, Chap. 4, Anderson, J.R. and Boudart, M., eds., Springer, Berlin (1981)
Emmett PH, Brunauer S, J. Am. Chem. Soc., 59, 310 (1937)
Jung HJ, Walker PL, Vannice MA, J. Catal., 75, 416 (1982)
Kaminsky M, yoon KJ, Geoffroy GL, Vannice MA, J. Catal., 91, 338 (1985)
Martin-Martinez JM, Vannice MA, Ind. Eng. Chem. Res., 30, 2263 (1991)
McVicker GB, Vannice MA, J. Catal., 63, 25 (1980)
Ott GL, Fleisch T, Delgass WN, J. Catal., 65, 253 (1980)
Phillips J, Clausen B, Dumesic JA, J. Phys. Chem., 84, 1814 (1980)
Raupp GB, Delgass WN, J. Catal., 58, 361 (1979)
Rostrup-Neilson J, Trimm DL, J. Catal., 48, 155 (1977)
Sachtler WMH, Shriver DF, Hollenberg WB, Lang AF, J. Catal., 92, 429 (1985)
Satterfield CN, "Heterogeneous Catalysis in Practice," p. 142, McGraw-Hill, New York (1980)
Storch HH, Golumbic H, Anderson RB, "The Fischer-Tropsch and Related Syntheses," p. 234, Wiley, New York (1951)
Stork WHJ, Pott GT, J. Phys. Chem., 78, 2496 (1974)
Vannice MA, J. Catal., 37, 449 (1975)
Vannice MA, Catal. Rev.-Sci. Eng., 14, 153 (1976)
Vannice MA, J. Catal., 50, 228 (1977)
Vannice MA, J. Catal., 74, 199 (1982)
Venter J, Kaminsky M, Geoffroy GL, Vannice MA, J. Catal., 103, 450 (1987)
Venter JJ, Chen A, Vannice MA, J. Catal., 117, 170 (1989)
Venter JJ, Chen AA, Phillips J, Vannice MA, J. Catal., 119, 451 (1989)
Weisz PB, Z. Phys. Chem., 11, 1 (1957)

[Referenced By]

[1] Amelse JA, Schwartz LH, Butt JB, J. Catal., 72, 95 (1981)

[2] Anderson RB, "Catalysis," Vol. 4, p. 119, Emmett, P.H., eds., Reinhold, New York (1956)

[3] Anderson RB, "The Fischer-Tropsch Synthesis," Chaps. 3, 4 and 5, Academic Press, Orlando (1984)

[4] Bartholomew CH, Catal. Rev.-Sci. Eng., 24, 67 (1982)

[5] Boudart M, Delbouille A, Dumesic JA, Khammouma S, Topsoe H, J. Catal., 37, 486 (1975)

[6] Chen AA, Vannice Ma, Phillips J, J. Phys. Chem., 91, 6257 (1987)

[7] Chen AA, Phillips J, Venter JJ, Vannice MA, J. Catal., 118, 443 (1989)

[8] Dry ME, "The Fischer-Tropsch Synthesis," in "Catalysis: Science and Technology," Vol. 1, Chap. 4, Anderson, J.R. and Boudart, M., eds., Springer, Berlin (1981)

[9] Emmett PH, Brunauer S, J. Am. Chem. Soc., 59, 310 (1937)

[10] Jung HJ, Walker PL, Vannice MA, J. Catal., 75, 416 (1982)

[11] Kaminsky M, yoon KJ, Geoffroy GL, Vannice MA, J. Catal., 91, 338 (1985)

[12] Martin-Martinez JM, Vannice MA, Ind. Eng. Chem. Res., 30, 2263 (1991)

[13] McVicker GB, Vannice MA, J. Catal., 63, 25 (1980)

[14] Ott GL, Fleisch T, Delgass WN, J. Catal., 65, 253 (1980)

[15] Phillips J, Clausen B, Dumesic JA, J. Phys. Chem., 84, 1814 (1980)

[16] Raupp GB, Delgass WN, J. Catal., 58, 361 (1979)

[17] Rostrup-Neilson J, Trimm DL, J. Catal., 48, 155 (1977)

[18] Sachtler WMH, Shriver DF, Hollenberg WB, Lang AF, J. Catal., 92, 429 (1985)

[19] Satterfield CN, "Heterogeneous Catalysis in Practice," p. 142, McGraw-Hill, New York (1980)

[20] Storch HH, Golumbic H, Anderson RB, "The Fischer-Tropsch and Related Syntheses," p. 234, Wiley, New York (1951)

[21] Stork WHJ, Pott GT, J. Phys. Chem., 78, 2496 (1974)

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

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

[24] Vannice MA, J. Catal., 50, 228 (1977)

[25] Vannice MA, J. Catal., 74, 199 (1982)

[26] Venter J, Kaminsky M, Geoffroy GL, Vannice MA, J. Catal., 103, 450 (1987)

[27] Venter JJ, Chen A, Vannice MA, J. Catal., 117, 170 (1989)

[28] Venter JJ, Chen AA, Phillips J, Vannice MA, J. Catal., 119, 451 (1989)

[29] Weisz PB, Z. Phys. Chem., 11, 1 (1957)