Development of a Method and Technique for Analysis of Acetone Hydrogenation Products by Gas Chromatography

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2023-09-04 DOI:10.1134/S207005042303011X

E. Yu. Yakovleva, Mural Nurbol, G. A. Bukhtiyarova

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Abstract

The results of using capillary chromatographic columns with different stationary phases were compared to determine the purity of isopropanol obtained by hydrogenation of acetone. The study was performed with columns based on 2-nitroterephthalic acid-modified polyethylene glycol 20М (PEG20М/FFAP), poly(1-trimethylsilyl-1-propyne) (PTMSP032), and trifluoropropyl (25%) methyl silicone elastomer (SKTFT 50Х). The measurement times, asymmetry factors (A_s) of mixture components, and resolutions (R_s) of the acetone/isopropanol and isopropanol/internal standard pairs of compounds were compared; as a result, the PEG20М/FFAP capillary column was chosen. A technique for measuring the mass fractions of acetone and isopropanol using the internal standard method in the gas phase has been developed. n-Butanol was used as an internal standard. The detection limit was 1.45 for acetone, 1.43 for isopropanol, and 1.28 × 10^–12 g/s for n-butanol. The relative standard deviation (repeability factor) did not exceed 4.3% at a confidence level Р = 0.95.

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丙酮加氢产物气相色谱分析方法与技术的发展

用不同固定相的毛细管色谱柱对丙酮加氢所得异丙醇的纯度进行了比较。色谱柱为2-硝基对苯二甲酸改性聚乙二醇20М (PEG20М/FFAP)、聚(1-三甲基硅基-1-丙炔)(PTMSP032)和三氟丙基(25%)甲基有机硅弹性体(SKTFT 50Х)。比较了丙酮/异丙醇和异丙醇/内标对化合物的测定次数、混合组分的不对称因子(As)和分辨度(Rs);因此，选择PEG20М/FFAP毛细管柱。建立了用内标法测定丙酮和异丙醇气相质量分数的方法。正丁醇作为内标。丙酮的检出限为1.45，异丙醇为1.43，正丁醇为1.28 × 10-12 g/s。相对标准偏差(重复性因子)不超过4.3%，置信水平Р = 0.95。

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

期刊介绍： The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.