Catalysts prepared by the modification of FIBAN K-4 and FIBAN X-1 fibrous ion exchangers with the hydroxides of iron and manganese were developed and tested in a water deoxygenation process. It was established that the samples obtained by the supporting of Fe(III) hydroxide onto the FIBAN X-1 ampholyte were most effective. The conclusion that the high activity of the catalytic system is caused by the formation of a mixed phase of Fe(II) and Fe(III) hydroxides of the spinel type containing mobile (weakly bound) lattice oxygen was made. A reaction scheme was proposed to explain the reaction mechanism.

The thermal transformations of anionites synthesized on the basis of a polyacrylonitrile fiber are studied. During the heat treatment of the weakly basic anionite FIBAN A-5, the cleavage of amino groups occurs via two routes. In the case of the strongly basic anionite FIBAN A-6, dealkylation and deamination occur during heating and the dealkylation of quaternary amino groups accompanied by formation of tertiary amino groups predominates. The thermal degradation of anionites proceeds much more intensely in an aqueous medium than in an atmosphere of inert gas owing to participation of water hydroxyl in the mentioned reactions.

A procedure for the preparation of a fibrous palladium-containing catalyst for the removal of dissolved oxygen from water was developed. This procedure includes the preliminary modification of an anionexchanger fiber with carboxylate ions, which makes it possible to localize metal clusters in a thin subsurface layer of a fiber at the subsequent stages of the ion-exchange introduction of palladium into the carrier and the reduction of palladium. It was found that the higher activity of fibrous palladium-containing catalysts based on the citrate forms of anion exchangers, as compared with that of samples based on the chloride forms, was due to the predominant arrangement of reduced metal clusters on the external surface and an adjacent thin layer of the fiber.

A new kind of sulfonic cation exchanger based on carbonized fiber modified with poly(styrene-divinylbenzene) was prepared by radiation grafting. The structural features and thermal stability of the cation exchangers prepared were studied.

The catalytic properties of the fibrous sulfonic acid cation exchanger FIBAN K-1 in methyl tert -amyl ether synthesis are studied as a function of its water content. Reducing the degree of hydration of the cation exchanger to <2 H 2 O molecules per SO 3 H group diminishes the proportion of the desired product in the catalysate. According to 13 C NMR data, protonation of methylbutenes in the air-dry cation exchanger phase (which contains 4 H 2 O molecules per SO 3 H group) involves [ n H 2 O] ⋅ H + species and is accompanied by olefin hydration and the formation of protonated tert -amyl alcohol.

Distribution in strength of the acid centers in sulfonic cation in the form of exchanger granules and fibers was studied by the novel modification of the thermal desorption method.

A new method for determining the thermal stability of sulfocationites is proposed. The method is based on the heating of an air-dry ionite sample in an inert gas flow that carries the gaseous products of the thermal decomposition of the ionite into a KMnO4 solution and thereby decolorizes it.

Using the IR spectroscopy method, we have studied the state of water, sulfogroups, and adsorbed methanol in a Fiban K-1 fibrous cationite under different conditions of preparation of a sample. It is shown that on an air-dried cationite protonation of methanol is performed by the ionic pair [(H 2 n +1 O n ) + ·SO 3 − ] after vacuum treatment at 20°C and by the ionic pair [H + ·SO 3 − ] after vacuum treatment at 90°C.

The effect of the main properties of FIBAN K-1 fibrous sulfonic cation exchanger on its activity and selectivity in synthesis of methyl tert-butyl ether was studied.

The conversion of a mixture of NO and CO on an industrial aluminopalladium catalyst APK-2 was studied. The kinetic constants of the occurring reactions are determined, and their possible mechanism is discussed.