2013 0(TTPT)

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   Short abstract

 

Pages:

113 - 124

Language:

RU

Ref.:

9


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2013_0(TTPT)_15.pdf

 

 

DME AND C1-C4 ALCOHOLS AS ALTERNATIVE FUEL DERIVED BY CONVERSION OF SYNTHESIS GAS IN THE AEROSOL SUPERDISPERSED CATALYTIC SYSTEMS

Khimach N.Yu., Gayday O.A., Polunkin E.V., Melnikova S.L.

Institute of Bioorganic Chemistry and Petrochemistry NAS of Ukraine, Kiev, Ukraine


Citation:

Khimach, N.Yu., Gayday, O.A., Polunkin, E.V. and Melnikova, S.L., (2013) DME and C1-C4 alcohols as alternative fuel derived by conversion of synthesis gas in the aerosol superdispersed catalytic systems, Modern Science: Researches, Ideas, Results, Technologies, Iss. #0(TTPT), PP. 113 - 124.


Keywords:

biofuels; ethanol; catalysis; synthesis gas; oil refining; organic chemistry


Abstracts:

The most important challenge faced by modern science, is a comprehensive solution of the energy and environmental problems. Despite the fact that the fossil fuel was the dominant energy source for the modern world, alcohol is used as a fuel throughout all history. The first four aliphatic alcohols (methanol, ethanol, propanol and butanol) are of interest as fuel, because they have characteristics that allow them to be used in modern engines. At the same time, the development of modern techniques of chemical products and materials, petroleum refining and petrochemical raw materials, environmental protection and energy production in the world at 80 - 90% based on catalytic processes.
Most of the catalytic systems is nanosystems. Already the first studies of the behavior of metal nanoparticles in catalysis showed that changes of the particle size provoke the speed changing of many reactions which vary in the same range, which change their structural and electronic properties of the catalyst. Methods for the synthesis of alcohols and DME are studied for a long time, many have already been introduced to the industry, but the necessity to find more efficient catalysts and/or the conditions of synthesis is still relevant. Knowledge of patterns of the process and the combination of the mechanical influence theory with the conception of the chemical nature of the catalytic action increases our ability to manage the processes of mechanical activation, synthesis of catalysts and catalytic reactions. Promising is the development of new technologies with the catalytic reactions under mechano-chemical activation (MCA). During mechanical activation of the catalyst takes place it’s continuously dispersing, accompanied by reduction of the active surface to form defects in the structure and decrease the activation energy of the reagents adsorbed on it. The latter is favorable for carrying out catalytic reactions directly in mechanical activation of the catalyst. In the study of phase transitions occurring under the influence of grinding and caused with high pressure, it was found that they have a lot in common. On the basis of these data, it is assumed that on the contact of rubbing particles sufficiently high pressures appear and shear deformations occur. The result of high pressure appearance in the mechanical activation of the catalyst is very promising as an alternative "tool" that allows you to get away from the high pressure of the processes of synthesis of alcohols and dimethyl ether, which can significantly reduce the cost of the final product. This article describes an alternative process for the conversion of synthesis gas into ultrafine aerosol catalyst systems, which allows to obtain at atmospheric pressure alcohols C1 - C4, and dimethyl ether which we can consider as components of alternative motor fuels.
The possibility of using ethanol as a component of motor fuel шis shown. The efficiency of the use of high concentrations of ethanol in the mixture with gasoline was substantiated. It was revealed that the transmission of propane-butane mixture into biofuel E-85 is the solution of a cold engine start when using biofuels. The results of comparative energy and environmental testing biofuels E-85 and commercial gasoline AI-95Euro were submitted. We found that the indicators of motor efficacy and toxicity running on E85 biofuel at maximum torque and rated power are improved in comparison with the engine running on the gasoline A-95-Euro. It was shown that optimizing the engine and using the positive properties of ethanol allow to increase the efficiency of the engine.


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