CHEMICAL PROBLEMS

Abstract The process of transesterification of cotton, sunflower, corn, soybean and palm vegetable oils with simple alcohols, including methanol, ethanol, iso-propanol and butanol under hydrodynamic cavitation conditions was studied with the use of amine-containing compounds as catalysts and among them are triethylamine (TEA), phenylenediamine (FDA), diphenylamine (DFA), iso-propylamine (IPA), tert-butylamine (TBA). It revealed that when […]

Abstract Bis-(3,5-di-tert-butyl-salicylidene) dihydrazone of succinic acid dihydrazide was synthesized and its analogue-reduced azomethine bond. The complexes of Mn (II) and Fe (II) with these ligands were obtained. Based on the data of IR-, electron spectroscopy and elemental analysis, of the obtained complexes is assumed the binuclear structure. The possibility of catalytic reduction of the azomethine […]

Abstract The reaction of cyclohexene addition to glycerol in the presence of boron trifluorideetherate to obtain a simple cyclohexyl-2-glyceride ether was carried out. Also, the reaction of esterification of the obtained cyclohexyl-2-glyceride with C1-C5 monobasic saturated carboxylic acids in the presence of a heterogeneous catalyst KU-2-8 (H-form) was studied. The influence of various factors on […]

Abstract The comparative study of electrocatalysts synthesized by chemical reduction and pulsed magnetron-ion sputtering for polymer electrolyte membrane electrochemical systems are presented. Various carbon nanomaterials were used as supports of Pt nanoparticles: carbon black, nanotubes, nanofibers and reduced graphene oxide. The electrochemical studies of the obtained electrocatalysts as well as their testing in the fuel […]