Modification of carbonaceous adsorbents with metal oxides improves their
physico-chemical characteristics, influencing the catalytic activity in redox
reactions.
The purpose of this work was to obtain metal oxide catalysts supported on
carbonaceous adsorbents. Five series of samples containing manganese
and two series containing copper supported carbonaceous adsorbents
were prepared. Depending on the type of support and method of
impregnation different amount of metal was loaded, manganese was
loaded in amount of 0.2-2.0%, while copper – 0.7-15%. Obtained results
revealed the importance of surface chemistry of carbonaceous adsorbents
on the manganese and copper loading.
Redox properties of initial and metal modified samples were evaluated
using chemiluminescence (CL) technique. Although kinetics curves of
hydrogen peroxide decomposition show the same behaviour for initial (ACB)
and manganese modified (AC-B-Mn) samples, the oxidative activity for
AC-B-Mn sample is higher. Modification with copper considerably increases
oxidative activity of the sample. After a period of induction (15 s) oxidative
activity of AC-B-Cu sample increases by about 10-12 times in comparison
with AC-B and AC-B-Mn.

Redox properties of carbonaceous adsorbents evaluated
by chemiluminescence method.
Acknowledgments. The present work was performed within Joint
Moldova-Belarus Project “Metal supported catalysts for water treatment:
synthesis, properties and using” (No. 15.820.18.02.04/B, 2015-2016).