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Fine Chemical Technologies

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Vol 5, No 4 (2010)
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3-4 42
Abstract
It is shown that biomass of different type can be processed into valuable products of organic and petrochemical synthesis and monomers of synthetic rubber in order to provide an alternative to the use of oil. The key technological, economical, ecological problems of bioethanol processing were stated. The analysis of development of new generation catalysts for motor fuels and hydrocarbons production from bioethanol is made.
5-22 71
Abstract
It is shown that biomass of different type can be processed into valuable products of organic and petrochemical synthesis and monomers of synthetic rubber in order to provide an alternative to the use of oil. The key technological, economical, ecological problems of bioethanol processing were stated. The analysis of development of new generation catalysts for motor fuels and hydrocarbons production from bioethanol is made.
23-27 50
Abstract
The article gives a brief overview of studies on the decomposition of hydrocarbons in electrical discharges. The authors suggest using this process for the possible utilization of liquid organic waste of chemical and petrochemical industries, which gives a wide range of valuable products.
28-39 58
Abstract
Methanol transformation in the presence of catalysts based on various carbon materials - nanofibres synthesized in the presence of Co-, Ni- and Fe-catalysts and of the carbon-carbon composite material Sibunit were studied. It was shown that the conditions of the synthesis of carbon nanofibres influence their structure and catalytical properties. A research of Cu-containing systems based on carbon nanofibers was carried out. It was found that a particle of the catalyst metal applied to the synthesis of carbon nanofibres actively participates in the interaction with methanol. Copper and cobalt promote the decomposition of methanol giving synthesis gas. Copper and ferrum show synergism in the reaction of dehydration of methyl alcohol.
40-43 48
Abstract
The pressure effect in the disintegration unit DA-1 on the oil has been investigated. A change in oil composition and indicators characterizing some properties of the residual fraction of direct distillation has been identified.
44-47 62
Abstract
In this paper results of monitoring of quality impregnating and integumentary roofing bitumens of marks BNK 45/190 and BNK 90/30 by company TehnoNICOL are analysed. On the basis of the big data the interrelation between penetration at 25°С and softening temperature is investigated.
48-53 49
Abstract
The zirconium-aluminium oxide and zirconium-containing calcium aluminate materials of different composition were prepared. Their activity in the process of methanol dehydration was investigated. It was found that their activity depends on the acidic properties of the surface of the synthesized materials, which in turn is determined by the ratio of components. It was concluded that the proposed systems can be promising catalysts for obtaining dimethyl ether.
54-62 55
Abstract
It was shown that carrying a small (up to 1%) amount of a heteropoly compound increases the adsorption of NOx as compared to the original carrier. The increase in adsorption is due to the oxidation of NO to NO2 on the carried heteropoly compound. The main adsorption factors are nitrite and nitrate complexes. Their place of localization is the carrier. As temperature increases, the complexes change to nitrates. The presence of ions of varying valencies in the composition of the Kegin anion reduces the strength of the bond of the nitrate complexes with the surface. The ions that are not in the Kegin anion increase the bond strength. The change in the strength of the bond of nitrates with the surface of the carrier is owned to the carrier modification, which results from disintegration of a part of the carried heteropoly compound.
63-69 52
Abstract
In this paper the influence of the conditions of the heavy oil raw materials oxidation process on the quality characteristics and paramagnetism of oxidized bitumen has been investigated.
70-76 41
Abstract
Studies on thermal decomposition cis-1,4-polyisoprene (model raw) and application of the products formed for a partial replacement nutritive floral oils in the LDM composition were carried out.
77-86 77
Abstract
The fundamentals of catalytic bioethanol conversion into gasoline products, ethylene and aromatic hydrocarbons are studied. New catalysts on the basis of HZSM-5 are synthesized for these purposes. The scheme of the mechanism of process key stages is offered. The possibility of catalytic hydrogenation of mixture of aromatic hydrocarbons contained in products of bioethanol conversion into motor fuel is demonstrated.
87-92 50
Abstract
The properties of mixed M-V-Sb (M = Ni, Co, Bi, Sn) oxides, supported on aluminum oxide, have been physically characterized and their activities estimated .in dehydrogenation of light paraffins, ethyl benzene and ethanol. The most selective NiVSb catalyst was easily reduced which allowed for proposing of the reduction-oxidation mechanism .The result of kinetic researches has shown that, the concentration of oxygen in the gas phase is the key parameter responsible for dehydrogenation selectivity. To maintain the optimal process conditions, oxygen was distributed along the catalyst layers.
93-97 65
Abstract
Development of the hydrogen power technologies demands new simple and effective methods for hydrogen production from renewable sources. Bio-ethanol produced by biomass fermentation can be used as a raw material for hydrogen production. In this work we studied the conversion of ethanol to hydrogen containing gas on Cu/CeO2 systems. We showed that optimal copper concentrations for these catalysts are within the range of 5-10%. This enables to achieve the reasonable yield of hydrogen at high ethanol conversion values. The main advantage of the proposed catalytic systems is the very low yield of carbon monoxide, which is necessary for further use of the obtained gas in fuel cells.
98-100 49
Abstract
It was considered the effects of low concentrations of silicic acid esters on changes of the physical and mechanical properties of epoxy composites. The following extreme changes in the properties in a narrow range of concentrations of the modifier in various polymer systems. The results are compared with previous studies of composites based on epoxy matrix modified with carbon nanotubes.


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