The composition of natural gas plays an important role in gas processing and transportation, and the main method for determination of the composition of natural gas is gas chromatography. In gas chromatography the efficiency of separation and the selectivity are the main characteristics of the analytical process. In this work the influence of the type of packed column on separation efficiency and selectivity during chromatographic analysis of natural gas under various conditions was investigated. The highest theoretical plate number was obtained with a Porapak R 4233 column (3 m), the best symmetry of the peaks was obtained with an OPN/Porous-Sil C Column 4355 (3 m), and the highest resolution was obtained with the Hayesep Q# 1754 (3 m), Hayesep D 4741 (2 m), and Porapak Q 1723 (2 m) columns. It was shown that optimization of operation conditions can significantly improve the efficiency and selectivity of chromatographic determination of the composition of natural gas.
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The work was carried out with financial support from the Ministry of Science and Higher Education of the Russian Federation (an agreement with LLC Chromos Engineering No. 075-11-2019-037 of 22.11.2019 “Development of the high-tech production of boxes for quality control of technological gases and liquids based on on-line industrial chromatographic analyzers using digital technologies and ensuring control of the accuracy and reliability of their on-line operation”, an agreement between Chromos Engineering LLC and the L M. Gubkin Russian State University of Oil and Gas (NRU), No. 555-19, dated 09/09/2019).
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Translated from Khimiya i Teknologiya Topliv i Masel, No. 6, pp. 43 – 47, November-December, 2020
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Mazurova, K., Tyutlikova, M., Chudin, E. et al. Increasing the Efficiency and Selectivity of Separation of Components in Chromatographic Analysis of Natural Gas. Chem Technol Fuels Oils 56, 909–918 (2021). https://doi.org/10.1007/s10553-021-01207-0
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DOI: https://doi.org/10.1007/s10553-021-01207-0