The porosity parameters of samples containing Co
2+
, Co
3+
, and Fe
3+
ions were studied using IR spectroscopy to confirm the binding mechanism of metal ions to a polyacrylonitrile matrix. The main ...decomposition products of an acidic dye during catalytic oxidation in aqueous solutions were determined.
A mathematical method for determining a catalyst surface is discussed. The bond angles in an FeO
2
(NH
2
)
3
fragment are determined. The geometry of the resulting complex is established. The ...effectiveness of using quantum-chemical modeling to study the active-site structure is examined.
Polymeric catalysts containing Co
3+
were prepared. Their structures and processing characteristics were studied. The kinetics of catalytic oxidation of a dye solution were determined.
The structures and catalytic properties of metal-containing polymers with transition-metal ions and their compositions with metals of different valence were studied. Di- and trivalent Fe and divalent ...Mn were used to create the catalyst active site.
The characteristic features of the structural hierarchy of the formation of iron-containing catalytic sites on polymeric carriers based on modified polyacrylonitrile and copolymer of acrylonitrile ...with methyl acrylate were determined using optical and X-ray spectroscopy. It has been shown that some of the short ring structures that appear in the creation of a polydentate ligand lose their ability to coordinate the metal and may not be included in the composition of catalytically active particles entering the complex formation reaction.
A series of iron-containing film catalysts on a polymeric support consisting of acrylonitrile and methylacrylate copolymers were investigated. The characteristics of the catalysts, the best of which ...were those on a support of AN:MA in the ratio 98:2, were determined. The elemental composition of the catalytically active particles was studied.
Polymeric catalysts containing Co.sup.3+ were prepared. Their structures and processing characteristics were studied. The kinetics of catalytic oxidation of a dye solution were determined.
It was found that creation of structured cells for metal particles can be regulated by varying the modification parameters and optimum functioning of catalytic systems can be ensured with them. ...Mechanisms of formation and the possible structure of variable-ligand Fe³⁺-containing complexes localized on the surface of the fibre support were investigated.
A method is proposed for modifying complex PAN fibre that allows obtaining a catalytically active Fe^sup 3+^ complex on its surface; high strength of immobilization of the metal on the fibre support ...in the range of pH 4-12 is attained. It was found that active catalyst sites are formed due to the content of carboxylate-ion, amino, imine, and amide groups on the modified PAN fibre, and the metal is primarily distributed on its outer surface. The specific surface of the catalyst is determined. It is concluded that its nonporous surface causes catalysis in the outer diffusion region. The results of testing the catalyst at the factory of Wil'iam Baker Ltd. (Leicester, Great Britain) allowed recommending it for industrial use.PUBLICATION ABSTRACT
It was found that the structure of FC carbon filler significantly affects transmission and reflection of IR radiation. The penetrating power of FC is higher the more ordered the structure of the ...filler. The lowest transmission of IR radiation is observed in FC with a filler characterized by a macropore structure; microporosity has almost no effect on the penetrating power of FC. The carbon filler significantly affects the reflectivity of FC in the IR region: the intensity of reflection of carbon-containing film materials is one order of magnitude less than for films with no filler. The reflectivity of FC is higher the more perfect the structure of the carbon-containing filler is.PUBLICATION ABSTRACT
