Preview

Fine Chemical Technologies

Advanced search
Vol 5, No 5 (2010)
View or download the full issue PDF (Russian)

CHEMISTRY AND TECHNOLOGY OF INORGANIC MATERIALS

3-12 116
Abstract
The varieties of the methods of nanoparicles synthesis are discussed in this review. Wet and dry chemistry processes, pulse sonoelectrochemistry, methods with use of supercritical CO2, and far from equilibrium systems of two liquids are considered and compared.Possible role of dissipative phenomena during the processes of new nanoparticles creation is under special attention.
13-18 55
Abstract
A method for the computation of radiative heat transfer was suggested. It is based on numeric computation of heat flows from the muffle walls with a specified temperature to the ampoule walls with a temperature that needs to be estimated. The computation was realized in two steps. At the first step the form of view factors was determined with the use of analytic formulas. At the second step the heat flows were computed in the array of points on the ampoule and rod walls. Computations carried out for the CdZnTe system with the use of our algorithm
19-23 47
Abstract
Data of morphology of epitaxial layers CdXHg1-XTe, which has been grown on substrates GaAs (310) by MBE, have been presented. Peculiarities of growing V-defects have been studied by scanning electronic microscopy techniques and EDS. The structure, orientation, chemical composition of V-defects, causes of appearance and formation have been studied.
24-26 56
Abstract
Ag nanoparticles (NPs) in water solutions of carbonate-ions (CO32-) were obtained. It was found that CO32- is an effective stabilizing additive. The most stable NPs were obtained at CO32 concentration equal 1×10-3- mol∙l-1.
27-35 60
Abstract
The effects of the following factors on the optical properties of langasite crystals was studied: the growth direction for crystals of stoichiometric composition (La3Ga5SiO14) obtained in a growth atmosphere Ar+O2; growth atmosphere (Ar and Ar+O2) for crystals of stoichiometric composition; initial composition of crystals for the crystals obtained during the same conditions of growing and post-growth treatment (annealing in vacuum and in air, UV- and γ - irradiation).

THEORETICAL BASES OF CHEMICAL TECHNOLOGY

36-39 53
Abstract
In article results and calculations of heat of binary mixes on the basis of the developed thermodynamic analysis of process of transition a liquid- vapor are presented.
40-42 45
Abstract
In this article the results of experimental data for heats of steam formation depending on temperature (density) for individual organic substances and mixtures are presented
43-46 44
Abstract
A method was developed to study the initial palladium compounds (e.g. acetate or chloride) interaction with molecular hydrogen on a carrier surface. It is based on absorption of the corresponding acid evolved in the course of the reaction and its quantitative determination. A special apparatus was created enabling to study the kinetics of such reactions. The method allows investigating the metal centers formation on a heterogeneous catalyst surface.
47-51 59
Abstract
Some modes of concentration oscillations in the homogeneous system KI-PdI2-CO-O2-CH3OH are described in this paper. Described modes of phenylacetylene oxidative carbonylation reaction in this system have some distinctive features. The further studies would reveal the reasons of these special modes and help one to understand in more details the mechanism of concentration oscillations of unsaturated compounds occurring in the carbonylation reactions.
52-57 79
Abstract
Evolution of diagrams of biazeotropic three-phase mixture methyl tert-butyl ether - water at high pressure was considered.
58-64 61
Abstract
Kinetics of [2+2+2]-cycloaddition of acrylates to norbornadiene in the presence of η3-bis(allyl) nickel was studied. The thermodynamic parameters were determined. Kinetics equations for all of the isomer reaction products were found. The data obtained agree with the formerly proposed mechanism.

CHEMISTRY AND TECHNOLOGY OF MEDICINAL COMPOUNDS AND BIOLOGICALLY ACTIVE SUBSTANCES

65-70 49
Abstract
The synthesis of galactose-containing amphiphiles based on tetradecanol, cholesterol or 1,2-di-O-tetradecylglycerol has been described. The compounds synthesized can be used as components of liposomal targeted carries for therapeutics delivery into liver cells.
71-81 54
Abstract
Arginine-containing peptides consisted of 3- and 13- amino acids residues, namely RGD and [5Ala]-indolicidine were synthetized. Monosubstituted hemin derivatives modificated by RGD, [5Ala]-indolicidine and gramicidine S were obtained. Biocide activity and low toxicity of obtained conjugates was shown.
82-87 71
Abstract
In the course of searching new highly active substances which are prospective for treating tumors and some other types of widespread diseases the synthesis of protoporphyrin IX bearing the benzodiazepine residue, was performed. It was found that the use of porphyrins containing acetylacetonate residues in the heterocyclic synthesis leads to ketone splitting of the acetylacetonate moiety under the mild conditions of regioselective synthesis of benzodiazepine in addition to the formation of porphyrin-benzodiazepines.

SYNTHESIS AND PROCESSING OF POLYMERS AND POLYMERIC COMPOSITES

88-90 50
Abstract
Analysis of changes in the structure and properties of polyisoprene films was carried out. The samples contained chemically active additives (antioxidants, antiscorchings) and were subsequenly warmed up.
91-95 42
Abstract
The polymerization of aniline in the presence of mixtures of polymer sulfonic acid <http://lingvo.yandex.ru/en?text=sulfonic acid&st_translate=on&lang_from=en&lang_to=ru&dict=Medical>s has been studied. It was shown dominating influence of rigid polyacid on polymerization kinetics and electronic structure of formed polyaniline.
96-101 69
Abstract
The effect of serpentinites on the antiwear, antiwelding and lubricating properties of general-purpose lubricants was investigated. The efficiency of the industrial lizardite as a component of a multipurpose lubricant was proved.
102-105 47
Abstract
Succinic acid influence on migration properties of lead and cadmium in soil-plant system has been investigated. It has been shown that the addition the activator (succinic acid) into soil increases the efficiency of phytoextraction of lead and cadmium. The optimum conditions of succinic acid usage as the process activator have been established.
106-110 54
Abstract
Analysis of technologies of ammonia removal from water intended for drinking water supply was carried out. Comparative criteria of the choice of technologies are offered.
111-115 45
Abstract
In this article the biographic review of the life of V.I. Vernadsky is proposed. The principal stages of his scientific work are shown. Besides, examples of using his biosphere theory for the formulation of ecologo-economic principles of wildlife management are described.

MATHEMATICAL METHODS AND INFORMATION SYSTEMS IN CHEMICAL TECHNOLOGY

116-118 41
Abstract
Connection effect of deformation and temperature fields was shown to be significant for some polymers..
119-123 64
Abstract
A process of heat transport in the circuit of an oriented crystalline polymer in the range of low temperatures within the limits of approximation of stationary neighboring circuits were considered. The heat transport is caused by transmission of local nonlinear excitations of soliton type - kinks and breathers. Characteristics of nonlinear excitations of both types were determined. From the viewpoint of energy transport, kinks and breathers are more effective than linear excitations consisting of harmonic waves (phonons).
124-126 41
Abstract
Within this job a process model for the development of grounding anodes based on conductive elastomers (used to protect metal structures from underground corrosion) was designed. On the basis of this model the ways to enhance MINADAGS business processes are shown. In order to optimize production processes certain guidelines are given.
127-127 39
Abstract
In focus - surface-active materials


ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)