Iziumskyi M. Thermodestruction of cluster halocarboxylates of dirhenium(III)

The thesis is devoted to the synthesis, study of the thermochemical properties and its communication with structure of halocarboxylate clusters of dirhenium(III). 24 halocarboxylate clusters of dirhenium(III) by using standard and modified synthesis procedures were synthesized. The synthesis procedure for obtaining dichlorotetra-μ-carboxylats of dirhenium(III) was modified. The composition, features of thermal decomposition, kinetic parameters for thermodestructions by using physico-chemical methods were studied. Morphology of rhenium coatings and metalocomposite Cu-Re were investigated. Determined that the crystals rhenium in coatings have dimensions from 1 to 100 μm. For Cu-Re composite determined that the Cu has dendrite forms on rhenium base. Cu that “growing” from rhenium base have dimensions from 100 nm to 1 μm. Radical gas-phase mechanism of thermodestruction trans-[Re2Cl4(C2H5COO)2] and formation Cu-Re and Pb-Re by using reaction of trans-tetrachloro-di-μ-propionato of dirhenium(III) with metal Cu or Pb were proved. Catalytic conversion systems with 1-2 % of metal rhenium for catalytic neutralization of exhaust gases at temperature 600°С with degree of conversion rate for NO 90%, SO2 and CO 50% were developed.