Russian Journal of Applied Chemistry, 2011, Vol. 84, No. 12, pp. 2046−2050.
Pleiades Publishing, Ltd., 2011.
Original Russian Text © A.V. Shabalina, G.M. Mokrousov, T.I. Izaak, E.D. Fakhrutdinova, J.J. Wu, 2011, published in Zhurnal Prikladnoi Khimii, 2011,
Vol. 84, No. 12, pp. 1963−1967.
OF SYSTEMS AND PROCESSES
Highly Porous Cellular Copper as a Catalyst
for Ozone Oxidation of Organic Water Pollutants
A. V. Shabalina, G. M. Mokrousov, T. I. Izaak, E. D. Fakhrutdinova, and J. J. Wu
Tomsk State University, Tomsk, Russia
Feng Chia University, Taichung, Taiwan
Received April 18, 2011
Abstract—The synthesis of high-porosity cellular copper and structural features of its surface were studied. Results
obtained in studying the activity of high-porosity copper catalyst during ozone oxidation of organic substances
dissolved in water are given by an example of oxalic and benzoic acids.
Anthropogenic pollution of the water basin with
organic and inorganic substances is increasing every
year. Organic substances discharged with wastewater
are commonly present in too small quantities to be
extracted and then used . At the same time, their
concentrations are sufﬁ ciently large to be hazardous for
living organisms. Presently, the most commonly used
water treatment technologies are ﬁ ltration, sorption, and
chemical oxidation. The ﬁ rst method is used for coarse
suspended particles, the second, to inorganic ions and
compounds, bacteria and viruses, as well as a small
number of organic pollutants, and the third, for different
kinds of pollutants .
For the ﬁ rst time, ozone disinfection of water was used
nearly a hundred years ago in France.
World experience in ozonation found that this oxidant
is environmentally friendly, deep oxidizes many organic
substances, iron and manganese, reduces the color of
water, and improves its taste and smell . Unfortunately,
ozone oxidation mostly yields stable forms of intermediate
organic compounds, whose toxicity may exceed original
substances. Therefore, heterogeneous or homogeneous
catalysts are used in ozonation to improve efﬁ ciency and
economy of the process . As heterogeneous catalysts
are applied nanostructured oxides or metals in the form of
granules or powders on various oxide carriers. The main
difﬁ culty impeding wide use of these catalysts (in contact
with liquid and gaseous phases) is wearing with the
formation of ﬁ nely dispersed suspension, which requires
additional stage of water ﬁ ltration, and, consequently,
makes process complex and expensive. Therefore, the
wear-resistant metal catalysts described in the study are
more promising for the given process.
Preliminary studies  showed that among the oxide
and metallic materials differing in the compositions and
preparations, highly porous cellular copper obtained by
the chemical deposition on porous polymer is the most
suitable catalyst . This material has high activity
compared with the oxide catalysts described in the
literature . Its porosity and wear resistance are also
high. The use of this material in ozone decomposition
of organic water pollutants does not require subsequent
ﬁ ltration of water, which decreases the treatment time and
is attractive from the economical standpoint.
The catalytic ozonation process is commonly studied
using phenols, carboxylic acids, and alcohols as model
compounds. In this study, benzoic acid and oxalic acid
were model compounds, because the former contains
in its structure an aromatic ring, which is important for
studying destruction of aromatic compounds as whole,
and the second is product of water ozonation of aromatic
contaminants and its direct reaction with ozone proceeds