IR Study of the Secondary Reaction of Ethylene Oxide over Silver Catalyst Supported on Mesoporous Material

Kweon-Hee Jung; Kyeong-Hwan Chung; Mi-Young Kim; Jong-Ho Kim; Gon Seo

Korean Journal of Chemical Engineering, Vol.16, No.3, 396-400, May, 1999

DOI10.1007/BF02707132 Export Citation

IR Study of the Secondary Reaction of Ethylene Oxide over Silver Catalyst Supported on Mesoporous Material

Kweon-Hee Jung, Kyeong-Hwan Chung¹, Mi-Young Kim², Jong-Ho Kim², and Gon Seo^{2, †}

Honam Petrochemical Co. LTD., Yeochon, Chonnam 555-200, Korea
¹Department of Petrochemical Engineering, Hanlyo University, Dokryeri 199-4, Kwangyang, Chonnam 545-800, Korea
²Department of Chemical Technology & The Research Institute for Catalysis, Chonnam National University, Kwangju 500-757, Korea

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The secondary reaction of ethylene oxide over silver catalyst supported on MCM-41 mesoporous material was investigated by the in-situ IR method. MCM-41 mesoporous material with a large content of hydroxyl group was very active in catalyzing the isomerization of ethylene oxide to acetaldehyde. The reduction of hydroxyl group by silane treatment or silver loading suppressed the isomerization of ethylene oxide. The selectivity for ethylene oxide in the partial oxidation of ethylene is enhanced by silane modification revealing the acceleration of the consumption of ethylene oxide on the hydroxyl group.

Keywords:Ethylene Oxide;Partial Oxidation;Silver Catalysts MCM-41 Mesoporous Material;Silane Modification

[References]

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Chen J, Li Q, Xu R, Xiao F, Angew. Chem.-Int. Edit., 34, 2694 (1995)
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Jung KH, Kim JH, Seo G, React. Kinet. Catal. Lett., submitted
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Mao CF, Vannice MA, Appl. Catal. A: Gen., 122(1), 61 (1995)
Rah SC, Haw JR, Rhee HK, HWAHAK KONGHAK, 16(2), 109 (1978)
Ryoo R, Kim JM, J. Chem. Soc.-Chem. Commun., 711 (1995)
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Yong YS, Kennedy EM, Cant NW, Appl. Catal., 76, 31 (1991)

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[1] Bulushev DA, Paukshtis EA, Nogin YN, Balzhinimaev BS, Appl. Catal. A: Gen., 123(2), 301 (1995)

[2] Chen J, Li Q, Xu R, Xiao F, Angew. Chem.-Int. Edit., 34, 2694 (1995)

[3] Jingfa D, Jun Y, Shi Z, Xiaohong Y, J. Catal., 138, 395 (1992)

[4] Jung KH, Kim JH, Seo G, HWAHAK KONGHAK, 35(6), 895 (1997)

[5] Jung KH, Kim JH, Seo G, React. Kinet. Catal. Lett., submitted

[6] Kilty PA, Sachtler WMH, Catal. Rev.-Sci. Eng., 10, 1 (1974)

[7] Kresge CT, Leonowicz ME, Roth WJ, Vartuli JC, Beck JS, Nature, 359, 710 (1992)

[8] Lee JK, Verykios XE, Pitchai R, Appl. Catal., 44, 223 (1988)

[9] Mao CF, Vannice MA, Appl. Catal. A: Gen., 122(1), 61 (1995)

[10] Rah SC, Haw JR, Rhee HK, HWAHAK KONGHAK, 16(2), 109 (1978)

[11] Ryoo R, Kim JM, J. Chem. Soc.-Chem. Commun., 711 (1995)

[12] Weglarski J, Datka J, He H, Klinowski J, J. Chem. Soc.-Faraday Trans., 92, 5161 (1996)

[13] Yong YS, Kennedy EM, Cant NW, Appl. Catal., 76, 31 (1991)