DEHYDROGENATION OF CYCLOHEXANOL TO CYCLOHEXANONE OVER Cu/SiO<SUB>2</SUB> CATALYSTS:DISPERSION AND CATALYTIC ACTIVITY

Jeon GS; Seo G; Chung JS

Korean Journal of Chemical Engineering, Vol.13, No.4, 412-414, July, 1996

DEHYDROGENATION OF CYCLOHEXANOL TO CYCLOHEXANONE OVER Cu/SiO₂ CATALYSTS:DISPERSION AND CATALYTIC ACTIVITY

Copper catalysts supported on silica (Cu/SiO₂) were prepared by three different methods; incipient wetness, precipitation, and ion exchange. Catalytic properties in the dehyd- rogenation of cyclohexanol over these catalysts were examined. Copper surface area increased in the order of incipient wetness<precipitation<ion-exchange method for the catalysts with the same loading of copper. Conversion was mainly dependent on the copper surface area regardless of preparation methods, and selectivity to cyclohexanone was very high for all Cu/SiO₂catalysts.

Keywords:Cu/SiO₂ Catalyst;Preparation Method;Copper Surface Area;Cyclohexanol Dehydrogenation;Cyclohexanone

[References]

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Chinchen GC, Hay CM, Vandervell HD, Waugh KC, J. Catal., 103, 79 (1987)
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[Referenced By]

[1] Chang HF, Saleque MA, J. Mol. Catal., 88, 223 (1994)

[2] Chang HF, Saleque MA, Appl. Catal. A: Gen., 103, 233 (1993)

[3] Chinchen GC, Hay CM, Vandervell HD, Waugh KC, J. Catal., 103, 79 (1987)

[4] Cubberley AH, Mueller MB, J. Am. Chem. Soc., June, 1535 (1947)

[5] Jeon GS, Chung JS, Appl. Catal. A: Gen., 115(1), 29 (1994)

[6] Kobayashi H, Takezawa N, Minochi C, Takahashi K, Chem. Lett., 1197 (1980)

[7] Minochi C, Kobayashi H, Takezawa N, Chem. Lett., 507 (1979)

[8] Monti DM, Wainwright MS, Trimm DL, Cant NW, Ind. Eng. Chem. Prod. Res. Dev., 24, 397 (1985)

[9] Sivaraj C, Reddy BM, Rao PK, Appl. Catal., 45, L11 (1988)

[10] Sodesawa T, React. Kinet. Catal. Lett., 24, 259 (1984)

[11] Sodesawa T, Nagacho M, Onodera A, Nozaki F, J. Catal., 102, 460 (1986)