Published June - July 2021, Pg. 49-52

Section: Oil refining and petroleum chemistry

UOT: 543.54+543.8

DOI: 10.37474/0365-8554/2021-6-7-49-52

Stock analysis of additives synthesis via vapor-phase chromatography containing liquid crystals

V.M. Farzaliev Dr. in Ch. Sc. - Institute for Chemistry of Additives

M.N. Alieva Dr. in Ch. Sc. - Institute for Chemistry of Additives

Via vapor-phase chromatography 2-tiophentiol and the mixtures of individual xanthogenates, which are the stock of additive synthesis have been analyzed. Isomeric composition of high boiling aromatic hydrocarbons has been separated through vapor-phase chromatography. n,nꞌ-dyetoxiazoxybenzol and dygeptylphenyl ethers of phenyldicarbon acids, which are applied to the glass capillary columns have been used as a liquid stationary phase. The water vapor of moving carrier was used instead of the gas-carrier of nitrogen, which allowed to reduce the durability of the analysis and to improve the seperation efficiency. The main parameters of vapor-phase chromatography have been studied during the stock analysis as well. The retention time, the height of theoretic trays and rates of assimetry of analyzed compounds have been calculated.

References:

1. Stolyarov B.V., Savinov I.M., Vitenberg A.G. i dr. Prakticheskaya gazovaya i zhidkostnaya khromatographiya – SPb.: Izd-vo S.-Peterburgskogo un-ta, 1998, 610 s.

2. Rodinkova O.V., Bugaychenkova A.S., Moskvina L.N. Staticheskiy parophazniy analiz i yego sovremennoe sostoyanie // Zhurnal analiticheskoy khimii, 2020, t.75, No 1, s. 3-23.

3. Moskvin L.N. A classification of separation methods // Separation & Purification Reviews, 2016, vol. 45, No 1,
рр. 1-7.

4. Poole C., Mester Z., Miró M., Pedersen-Bjergaard S. Pawliszyn J. Extraction for analytical scale sample preparation (IUPAC Technical Report) // Pure and Applied Chemistry, 2016, vol. 88, No 7, рр. 649-53.

5. Urbanowicz M., Zabiegala B., Namiesnik J. Solventless sample preparation techniques based on solid- and vapor-phase extraction // Analytical and Bioanalytical Chemistry, 2011, vol. 399, рр. 277-284.

6. Ioffe B.V., Vitenberg A.G. Head-space Analysis and Related Methods in Gas Chromatography. – N.-Y.: Wiley Interscience, 1984, 276 p.

7. Snow N.H., Bullock G.P. Novel techniques for enhancing sensitivity in static headspace extraction-gas chromatography // Journal of Chromatography A. 2010, vol. 1217, рр. 2726-31.

8. Soria A.C., García-Sarrió M.J., Sanz M.L. Volatile sampling by headspace techniques // Trends in Analytical Chemistry, 2015, vol. 71, рр. 85-91.

9. Amerik U.B., Krentsel´ B.A. Khimiya zhidkikh kristallov i mezomernykh polimernykh system. – M.: Nauka, 1981, 38 s.

10. Alieva M.N. Parophaznaya khromatographiya – kak metod analiza vysokokipyashikh organicheskikh soedine-
niy // Azerbaidzhanskiy khimicheskiy zhurnal, 2003, No 1, s. 117-129.

11. Farzaliev V.M., Alieva M.N. Vliyanie kharakteristiki adsorbenta na razdelenie i razmyvanie khromatographicheskikh polos uglevodorodov // Azerbaidzhanskoe neftyanoe khozaistvo, 2017, No 9, s. 46-49.

12. Farzaliev V.M., Alieva M.N. Analiz osobennostey parophaznoy khromatographii vysokokipyashikh organicheskikh soedineniy // Azerbaidzhanskoe neftyanoe khozaistvo, 2020, No 4, s. 40-47.