CHEMICAL PROBLEMS

Abstract The reaction of dehydrogenation and oxidative dehydrogenation of isopropyl alcohol on molybdenum-vanadium oxide catalysts has been studied. It found that the dependences of isopropyl alcohol conversion and propylene yields on the atomic ratio of molybdenum to vanadium in reaction of dehydrogenation of isopropyl alcohol have the form of a curve with two maxima on […]

Abstract Hydrogen is the cleanest fuel as it only emits water when combusted. Furthermore, it has the highest combustion energy as compared to fossil fuels. Steam-methane reforming is the dominant process for hydrogen production, but it is energy intensive and suffers from chemical equilibrium limitation. In this paper, alternative technologies for hydrogen production are discussed. […]

Abstract Two complexes – derived from dithiocarbamate ligand (L) and their adduct with nitrogen base of the general formula [Cu(L)2], [Cu(L)2(A)] obtained by the condensation of CuCl2.2H2O with L= diisopropyl amine dithiocarbamate and A=1,10-phenanthroline weve directly been synthesized and characterized by infrared spectra, metal content and magnetic measurement. Some properties of these two complexes, including […]

Abstract This work is a continuation of our work on the thermodynamic study of synthetic analogues of the mineral argyrodite. In this work, a calorimetric study of the phase transition of the Cu8GeSe6 compound was carried out using the differential scanning calorimetry (DSC) method. Based on the data of DSC curves of samples of the […]

Abstract It has been shown that self-condensation ethyl cyanoacetate under conditions of excess potash in DMSO undergoes an intermolecular Claisen-type condensation involving three substrate molecules to form ethyl 2,4-dicyano-2-[2-cyanoacetyl-3-oxo]-butanoate. Self-condensation ethyl cyanoacetate takes place in the presence of triethyl phosphite and zinc acetate with the participation of three reagent molecules resulting in triethyl 3-cyano-2,4-diiminopentane-1,3,5-tricarboxylate. Alkylation […]

Abstract By the region-selective, a click one-pot reaction a series of new 1,2,3-triazole derivatives were successfully synthesized and evaluated in vitro as antioxidant agents. The molecular structures of synthesized derivatives were characterized using spectral analysis (IR, 1H NMR, and 13C NMR) in addition to elements analysis (C.H.N). The products obtained were investigated in vitro for […]

Abstract The reaction of radical copolymerization of N,N'-(p-phenylene)bismaleinimide with allyl ester of salicylic acid was carried out. Conditions of the implementation of the copolymerization reaction, the rate, content and molecular weight of the obtained copolymers, as well as the dependence of these parameters on the composition of the initial mixture of monomers determined. It established […]

Abstract The process of biomimetic monooxidation of ethylene into ethyl alcohol and acetaldehyde by hydrogen peroxide on the per-FTPhPFe3+OH/Al2O3 bioimitator, which showed high activity and unique resistance to the action of high-active intermediate reaction products was investigated. As a result of studying the kinetic regularities of the selective biomimetic oxidation of ethylene by hydrogen peroxide, […]