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Ethyl alcohol, which has a wide application in pharmaceutics, chemical, electronic and food-processing industry, practically always contains various impurities. Many of these impurities are found in quantities which are not sufficient to influence organoleptic effects and toxic potential of ethyl alcohol. However, the quantity of some of them, such as aldehydes, fusel oil, ethers and methyl alcohol is strictly regulated. The paper suggests a new effective method of purifying alcohol-containing liquids from undesirable impurities. At present, development in many areas of science and technology is associated with carbon nanotubes (CNTs) [1 -6]. One of their remarkable features of is related to their unique sorption characteristics. The highly curved surface of CNTs can adsorb rather complex molecules including molecules of organic origin. The effectiveness of nanotubes with respect to organic molecules is ten times greater than the that one of graphite adsorbents, which are currently considered the most common means of purification. Therefore, nanotubes can be used for final purification of various liquids from extremely low concentrations of impurities. We performed quantumchemical study of molecul adsorption of heavy alcohols (normal and isomeric propanol) on the outer surface of single-walled carbon nanotubes. We constructed energy curves of interaction of normal propanol and isopropanol molecules with the CNT's surface (6, 6). We also established the most effective adsorption centres for molecules of heavy alcohols. We also proved the feasibility of physical adsorption. We developed and implemented a method of alcohol liquids purification from impurities with CNTs. We carried out experimental study of water-ethanol mixtures taken before and after purification with carbon nanomaterials, applying molecular methods of IR spectroscopy, chromatography and chemical analysis and proved the positive effect of carbon nanotubes on the process of purifying alcohol liquids from adverse impurities.

Since their discovery in the early 1990's, carbon nanotubes (CNTs) have become the subject of numerous investigations into their electronic structure and energy spectrum parameters as well as their physico-chemical properties. Due to their high surface activity, nanotubes can be used as base components for the fabrication of various types of composites. However, along with carbon nanotubes, current research also focuses on theoretical and experimental investigation of non-carbon nanotubes, namely recently discovered boron-carbon nanotubes with different concentrations of boron in them (25 % or 50 %). This article presents the results of theoretical research into the properties of boron-carbon nanotubes (BCNTs) within the framework of an ionic-built covalent-cyclic cluster model and an appropriately modified MNDO quantum chemical scheme, as well as DFT method. The authors studied mechanism of Cl and O atoms sorption onto the external surface of single-walled armchair nanotubes. As result of the study, geometrical optimization of the sorption complexes was defined, and sorption energy values were obtained.