Method of hydrogenation of benzene to cyclohexane

Details Method of hydrogenation of benzene to cyclohexane Method of hydrogenation of benzene to cyclohexane

C - Chemistry, Metallurgy

07

C

260/694.3

C07C 13/18 (2006.01) C07C 5/10 (2006.01)

Patent

CA 1137520

ABSTRACT OF THE DISCLOSURE The subject of this invention is a method of catalytic hydrogenation of benzene to cyclohexane in gaseous phase on solid catalysts consisting of an active metal and/or oxide thereof, deposited on carriers. The essence of the invention is obtaining cyclohexane with suitable purity as a result of passing a mixture of benzene vapour and hydrogen, containing even a small, in relation to the stoichiometric composition, excess of hydrogen, successively through a catalyst bed containing platinum or palladium, and through a catalyst bed con- taining nickel. This makes possible a complete hydrogenation of benzene with a single evaporation of the raw material and without circulation of gases, whereby there are no limitations relating to the upper limit of pressure for conducting the method so that the pressure at which the hydrogen is supplied may be employed.

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