CHEMICAL PROBLEMS

Abstract The paper presents the results of thermal analysis of oil shale from the Baigushlu and Iyimish deposits (Azerbaijan). It was been established that in the shale of the Baygushlu deposit, the content of organic matter is 11%, while in the shale of the Iyimish deposit it is 40% higher – 15.3% (for dry shale). […]

Abstract The - irradiated 77K samples (RaO)x(SiO2)y with adsorbed water were studied using EPR spectroscopy, and EPR spectrum with g=2.0028 and hyperfine splitting constant A(H)=505.3 G belonging to hydrogen atoms was registered. EPR, presumably attributed to paramagnetic hole (≡Si-O)+, electronic (≡Si-)- centers and products of their interaction with water molecules spectra was registered. It is […]

Abstract The paper presents the results of research into the biostability of M-10 base oil samples with addition of protective additives for various purposes which are a part of the earlier composition of M-14В2 lubricating oil developed by us. It was established that despite the different nature of these additives (alkyl phenolates, dithiophosphates, sulfonates), all […]

Abstract The article presents a method to determine an amount of alunite in alunite ore and technological samples by alternative method. The essence of the method is that the alunite mineral in the ore is heated to the temperature of complete decomposition (800-8500C) and the degree of alunitation of the ore for the total mass […]

Abstract The paper present results of studies of the two-stage preparation of C10-C12 tricyclic vicinal amino alcohols from partially hydrogenated condensation products of cyclopentadiene and cyclohexa-1,3-diene, by epoxidizing them with hydrogen peroxide in the presence of cobalt-containing polyoxomolybdate, followed by aminolysis of the oxidate with diethylamine, morpholine, or piperidine. The structure of the synthesized compounds […]

Abstract The activity of tungsten-containing catalysts in the reaction of isomerization of butene-1 to butenes-2 was studied in the work. The results obtained showed that the ^ introduction of the second element into the composition of the tungsten oxide catalyst had a different effect on its activity in the butene-1 isomerization reaction. It was established […]

Abstract By the reaction of sodium diethyldithiocarbamate trihydrate with chlorosubstituted addends – allyl-, tetrahydrofurfuryl monochloroacetate, allyl-3-chloropropanoate and 4-chloromethyl-1,3-dioxolane, the appropriate ethers of diethyldithiocarbamic acid were synthesized. The influence of their composition and structure on the quality of lubricants was investigated.

Abstract This paper presents the results of studies of the anti-seize properties of (2,2-dimethyl-4-methylene- 1,3-dioxolane-allyl and benzyl)disulfides synthesized on the basis of 2,2-dimethyl-4-chloromethyl-1,3- dioxolane, sodium disulfide and allyl and benzyl chlorides, respectively, in the composition of transmission oils. The synthesized compounds are new compounds not previously described in the literature, the structure of which has […]