Russian Journal of Applied Chemistry, 2012, Vol. 85, No. 9, pp. 1345−1350.
Pleiades Publishing, Ltd., 2012.
Original Russian Text © L.V. Gorobinskii, G.Yu. Yurkov, 2012, published in Zhurnal Prikladnoi Khimii, 2012, Vol. 85, No. 9, pp. 1429−1435.
AND CORROSION PROTECTION OF METALS
Effect of Nickel Oxide Additive on Properties of Catalysts
Used in the Reaction of Selective Oxidation
of Carbon Monoxide
L. V. Gorobinskii and G. Yu. Yurkov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
Received March 6, 2012
Abstract—Effect of nickel oxide additives on the oxidation selectivity of carbon monoxide in the presence of
hydrogen was studied for the widely recognized system constituted by copper and cerium oxides. It was shown
that a signiﬁ cant positive effect is observed upon introduction of the nickel-containing additive (≤0.3%) due to
the electron-donor effect of nickel oxide. It was demonstrated that the catalyst of composition NiO/CuO/CeO
shows high selectivity in the reaction of CO oxidation.
Fuel cells have been intensively studied in a number
of recent years. Among the most successful types of fuel
cells are those operating on hydrogen . Hydrogen is
difﬁ cult in storage and transportation from the central
production place . Researchers’ attention has been
attracted by the method in which hydrogen is produced
directly at a place of its consumption, e.g., in automobile
There exist several ways to obtain hydrogen from
hydrocarbons, e.g., by their partial oxidation :
⇄ CO + 2H
= –36 kJ mol
Also, steam conversion can be used :
O ⇄ CO + 3H
= 206.2 kJ mol
⇄ 2CO + 2H
= 247 kJ mol
As a source of energy can serve combustion of
= −802 kJ mol
(or the autothermal reaction ). Alcohols, e.g.,
methanol, can be used as an alternative to natural gas
. All the methods for production of hydrogen from
carbon-containing raw materials yield considerable
amounts of carbon monoxide. To diminish the content
of CO, the water-gas shift reaction is used:
CO + H
O ⇄ CO
, ΔH = 41 kJ mol
The reaction is reversible, with the yield of
hydrogen increasing as the temperature is lowered.
A mixture containing 0.5–1% CO can be obtained .
It is commonly believed that, in compact sources of
hydrogen, selective oxidation of carbon monoxide in
the presence of hydrogen (PROX) is the optimal way
to diminish the CO concentration to an acceptable level
(<10 ppm) .
There exist two main types of high-selectivity
catalysts based on platinum metals  and on cerium and
copper oxides (CuO–CeO
) , suitable for oxidation
of CO. It has been shown previously that addition of
Fe and Ni oxides improves the activity of the oxide
at low copper oxide concentrations,