CATALYTIC ACTIVITY OF COMPLEX COMPOUNDS OF COPPER (II) WITH ALIFATIC AMINES IN REACTIONS OF THE PLANNING OF HYDROGEN PEROXIDE

A. L. Kovalenko, T. O. Kizimishina

Abstract


Complex compounds of transition metal ions with different ligands are active catalysts for many oxidation-reducing processes. The most active catalysts are transition metals elements. The complex ion of cuprum (II) is very important as a catalyst of many oxidation-reducing processes. For the decomposition of H2O2, ions of manganese, ferrum, cobalt, and potassium are used, although not the metal ions salts have a catalytic effect, but their complexes. The pair of Cu (I) -Su (II) is involved in many oxidation-reduction processes. The catalytic activity of complex compounds of cuprum (II) nitrate with mono-, di- and tri-substituted aliphatic amines at a temperature of 28 ° - 30 ° C under heterogeneous catalysis of the decomposition of hydrogen peroxide has been studied. The catalytic activity of complexes is strongly influenced by the nature of the molecules that are part of the coordination sphere of the ion.

Active models of catalysts in the reactions of the decomposition of hydrogen peroxides are complexes with amines and some heterocyclic amines.

Synthesis of coordination compounds of cuprum (II) with mono-, di- and tri-substituted aliphatic amines was carried out from non-aqueous solutions. The obtained compounds of cuprum (II) with aliphatic amines have a polymer structure, adsorption of hydrogen peroxide occurs on the surface of the catalyst. It has been established that complexes with tertiary amines have higher catalytic activity than complexes with mono- and di-substituted amines. This pattern is due to the spatial difficulties that arise in the coordinate plane.

The catalytic activity of the compartments of cuprum (II) with aliphatic amines increases from the primary to the secondary and tertiary amines. The resulting complexes of cuprum (II) with amines are not soluble in water, so we can assume that they have a polymer structure. Primary and secondary amines do not have such cumbersome substitutes and form more stable complexes with cuprum (II) than tertiary amines.

Greater catalytic activity was found in complexes of cuprum (II) with tertiary amines. Thus, the resulting coupling (II) coordination compounds with tertiary aliphatic amines can be used in heterogeneous catalysis of the decomposition of hydrogen peroxide, which is directed to biological treatment plants.


Keywords


hydrogen peroxide; catalysis; aliphatic amines; cuprum (II) nitrate

References


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DOI: https://doi.org/10.31319/2519-2884.32.2018.177

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Copyright (c) 2018 A. L. Kovalenko, T. O. Kizimishina

ISSN (print) 2519-2884

ISSN (online) 2617-8389