Russian Journal of Applied Chemistry, 2009, Vol. 82, No. 5, pp. 884−888.
Pleiades Publishing, Ltd., 2009.
Original Russian Text
S.V. Levanova, E.M. Sul’man, A.B. Sokolov, E.L. Krasnykh, I.L. Glazko, A.V. Kenzin, V.A. Pozdeev, 2009, published in Zhurnal Priklad-
noi Khimii, 2009, Vol. 82, No. 5, pp. 830−833.
ORGANIC SYNTHESIS AND INDUSTRIAL
Selective Hydrogenation with the Use of Nanocatalysts
S. V. Levanova
, E. M. Sul’man
, A. B. Sokolov
, E. L. Krasnykh
I. L. Glazko
, A. V. Kenzin
, and V. A. Pozdeev
Samara State Technical University, State Educational Enterprise for Higher Professional Education, Samara, Russia
Tver State University, State Educational Enterprise for Higher Professional Education, Tver, Russia
Received December 11, 2008
Abstract—Process of single-stage hydrogenation of phenol to cyclohexanone with industrial (domestic and
imported) palladium catalysts, and also with nanocatalysts synthesized in laboratory, was studied. The activation
energies and rate constants were determined for various nanocatalyst samples. A comparative analysis of the
hydrogenation results for the industrial and laboratory samples was made.
There exist two nearly equally efficient ways to
synthesize caprolactam: via cyclohexane and via phenol
(60 and 40% of world’s manufacture, respectively) (see
In Russia, the caprolactam production facilities were
created in the mid-1960s. On the whole, they are based
on the outdated cyclohexane method (85% of the total
output capacity in Russia).
Schemes of existing methods for manufacture of caprolactam
The main disadvantage of this method is its low
selectivity: the conversion of benzene to the target
product is lower than 70%, and the amount of organic by-
products is as large as 0.3 ton per ton of caprolactam.
The phenol scheme for synthesis of cyclohexanone
as the main intermediate product in manufacture of
caprolactam has a substantially higher selectivity but
involves a larger number of stages. In the case of the