THE EFFECT OF ALKALI METAL SALTS PROMOTED MgO CATALYSTS FOR THE OXIDATIVE COUPLING OF METHANE

Seo HJ; Yu EY

Korean Journal of Chemical Engineering, Vol.12, No.4, 485-487, September, 1995

Catalytic activities of the alkali metal salts are discussed based on experimental observations in a fixed bed flow reactor at atmospheric condition and instrumental analysis. LiCl (30 wt%) and NaCl (30 wt%) promoted MgO catalyst showed superior activity to mono alkali metal salts promoted MgO catalysts based on the C₂ yield. This suggests that the bialkali metal salts neutralize the nonselective acid sites due to synergistic effect. Moreover, it is estimated that the active sites is O^_ions.

Keywords:Oxidative Coupling of Methane;Alkali Metal Salts;MgO

[References]

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Ito T, Wang JX, Lin CH, Lunsford JH, J. Am. Chem. Soc., 107, 5062 (1985)
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Otsuka K, Sekiyu Gakkaishi, 30(6), 385 (1987)
Parida KM, Rao SB, React. Kinet. Catal. Lett., 44(1), 45 (1991)
Roos JA, Korf SJ, Veehof RHJ, Ommen JGV, Ross JRH, Appl. Catal., 52, 131 (1989)
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[Referenced By]

[1] Amenomiya Y, Birss VI, Goledzinowski M, Glauszka J, Sanger AR, Catal. Rev.-Sci. Eng., 32(3), 163 (1990)

[2] Ito T, Wang JX, Lin CH, Lunsford JH, J. Am. Chem. Soc., 107, 5062 (1985)

[3] Iwamatsu E, Moriyama T, Takasaki N, Aika KI, J. Catal., 113, 25 (1988)

[4] Joseph M, Catal. Rev.-Sci. Eng., 35(2), 169 (1993)

[5] Jun HJ, "Catalysis an Introduction," Han Rim Won (1992)

[6] Keller GE, Bhasin MM, J. Catal., 73, 1 (1982)

[7] Lee JS, Oyama ST, Catal. Rev.-Sci. Eng., 30(2), 249 (1988)

[8] Lin CH, Wang JX, Lunsford JH, J. Catal., 111, 302 (1988)

[9] Maitra AM, Campbell I, Tyler RJ, Appl. Catal. A: Gen., 85, 27 (1992)

[10] Otsuka K, Sekiyu Gakkaishi, 30(6), 385 (1987)

[11] Parida KM, Rao SB, React. Kinet. Catal. Lett., 44(1), 45 (1991)

[12] Roos JA, Korf SJ, Veehof RHJ, Ommen JGV, Ross JRH, Appl. Catal., 52, 131 (1989)

[13] Ruckenstein E, Khan AZ, J. Catal., 141, 628 (1993)