In this work, we optimized the process of sulfating abies ethanol lignin with complexes of sulfuric anhydride with pyridine and 1,4-dioxane. Experimentally found are the conditions for the implementation of the process of sulfation of abies ethanol lignin by complexes of sulfur trioxide with 1,4-dioxane and pyridine, providing a high sulfur content (12.0–12.6%). It was shown that a high sulfur content of 12.0–13.5% (mass.) in the obtained ethanol lignin sulfate is achieved when the ratio of the amount of chlorosulfonic acid to the amount of abies ethanol lignin is 20.22 : 1 mmol : g and the duration of the sulfation process is 60–120 min and independent of the nature of the sulfating complex. The structure and composition of water-soluble sulfated abies ethanol lignin are confirmed by FTIR spectroscopy, gel permeation chromatography and elemental analysis. In the FTIR spectra of sulfated abies ethanol lignin, in comparison with the FTIR spectra of the initial abies ethanol lignin, there are absorption bands in the region of 1270–1260, 1220–1212, 861–803 cm-1, corresponding to vibrations of sulfate groups. Compared to the initial lignin, sulfated abies ethanol lignin has a low degree of polydispersity. In particular, there was an increase in Mw c ~1.5 kDa to ~3.4 kDa in lignin sulfated for 30 min and a decrease in polydispersity from 2.59 to 1.22 compared to the initial abies ethanol lignin. With an increase in the sulfation time, the profile of the molecular mass distribution curve shifts to a high molecular weight region, with a simultaneous increase in polydispersity to 1.5 and Mw increases to ~4.3 kDa.

The isolation of proanthocyanidins from bark of Scotch pine Pínus sylvéstris L. by water and water-alcohol solutions containing 5, 10, 15, 20 and 25% ethanol was studied for the first time. Isolation of proanthocyanidins was carried out from the initial and deresinified (extracted with hexane) pine bark. It was shown that, compared with water extraction, the use of 15–25% aqueous ethanol solutions allows one to increase the yield of proanthocyanidins from 0.44 to 0.63%. It was established that the preliminary extraction of resinous substances from the pine bark does not significantly affect the yield of proanthocyanidins. It was shown that an increase in ethanol concentration of more than 20% in the extraction solution leads to an increase in the total yield of extractives, while the yield of proanthocyanidins does not increase. A study of proanthocyanidins by UV spectroscopy after their conversion to red anthocyanidins showed that they mainly consist of procyanidin and prodelphinidine in close concentrations. The composition of the obtained proanthocyanidins mixtures was studied by IR and 13C NMR spectroscopy. It was shown that the proanthocyanidins obtained from the bark of pine Pínus sylvéstris L., in contrast to isolated from other pine species, contains gallic acid residues which can increase their antiradical activity.

The possibility of using aspen bark modified with zinc and iron chlorides for preparing highly porous materials with specific properties was examined. The effect of the treatment temperature and modifiers on the structural and electrochemical parameters of the carbon-containing product was revealed. Carbonization of aspen bark modified with ZnCl2 yielded a material with the specific surface area of up to 1350 m2 g–1, containing a crystalline zinc oxide phase. The material obtained using a mixture of aspen bark with FеCl3 had the specific surface area of up to 300 m2 g–1 and contained magnetite and maghemite. Modification of the bark with zinc and iron chlorides simultaneously yielded a highly porous product with ferromagnetic properties. The apparent capacitance of the samples carbonized at 800°С was found to be 150–400 F g–1. The possibility of using these materials in electrochemical devices was suggested.

It is proposed that light-blue pigment be synthesized by co-precipitation of nickel and aluminum from nitrate solutions by the anionite AB-17-8 in OH form followed by calcination of a precursor at temperature 750°C. The product obtained is investigated by means of thermographic and x-ray diffraction analyses as well as spectrophotometry (IR and diffuse reflection). Electron microscopy shows the pigment particles to be 0.3 μm in size.

The possibility of producing porous carbon materials from birch sawdust exposed to natural decomposition in water was demonstrated. It was established that the carbon material carbonized at 800°C was of a specific surface area nearly by one order of magnitude higher than that of a product produced using ordinary sawdust under the same conditions. It was suggested that developing porous structure of the carbon product was due to structural changes in wood mainly by reducing an amount of α-cellulose and its interaction with water.

The state of gold deposited from a chloride solution on the surface of the porous magnetite-carbon composite obtained from modified birch saw dust at 400 and 800°C was studied by electron microscopy, X-ray photoelectron spectroscopy, and XRD analysis. The shape and size of the deposited gold crystallites depend on the synthesis temperature of the composite. The deposited gold crystallites were mainly ray-shaped at the synthesis temperature of 400°C and spheroid at 800°C.

The effect of the heat treatment and subsequent treatment with water on the pore structure formation in a solid product made of birch sawdust with the addition of phosphoric acid was studied. The relationships characterizing the effect of the modifier, temperature, and treatment with water on the properties of the porous carbon material prepared from wood were revealed.

Formation of the porous structure of carbon material obtained by carbonization of microcrystalline cellulose (MCC) in the presence of modifying additives KOH and H3PO4 has been investigated. The optimal conditions for the synthesis of porous carbon materials (PCMs) from chemically activated MCC have been revealed. The highest specific surface area (about 1500 m2/g) is observed for water-washed carbon products obtained by carbonization at 800°C of MCC containing 50 wt % KOH and by carbonization at 400°C of MCC with the addition of 50 wt % H3PO4.

Double modification of birch wood sawdust was performed with the aim to prepare porous carbon materials with magnetic properties.

Tris(ferrocenoyl)acetonates of some lanthanides were obtained by homophase synthesis. The compositions and structures of the complexes obtained were proved by elemental analysis, electronic absorption and IR spectroscopy. Their solubilities in some aprotic solvents and thermal stabilities (by the thermographic method) were determined. The thermal properties of lanthanide tris(ferrocenoyl)acetonates were compared with those of analogous lanthanide tris(acetyl)acetonates.

Carbonization of birch sawdust modified with zinc chloride and selected properties of the resulting porous carbon materials were studied.