catalКатализ в промышленностиKataliz v promyshlennosti1816-03872413-6476LLC "KALVIS"10.18412/1816-0387-2025-4-11-18catal-1182Research ArticleКАТАЛИЗ В ХИМИЧЕСКОЙ И НЕФТЕХИМИЧЕСКОЙ ПРОМЫШЛЕННОСТИCATALYSIS IN CHEMICAL AND PETROCHEMICAL INDUSTRYВлияние содержания СО2 в синтез-газе на активность и селективность бифункционального катализатора Сo/SiO2+ZSM-5+Al2O3Effect of CO2 content in synthesis gas on combined synthesis and hydrofining of hydrocarbons on Сo/SiO2+ZSM-5+Al2O3 catalystНарочныйГ. Б.NarochnyG. B.ctls@kalvis.ruЗубковИ. Н.ZubkovI. N.ctls@kalvis.ruПапетаО. П.PapetaO. P.ctls@kalvis.ruБоженкоЕ. А.BozhenkoE. A.ctls@kalvis.ruСавостьяновА. П.Savost'yanovA. P.ctls@kalvis.ruЯковенкоР. Е.YakovenkoR. E.ctls@kalvis.ruЮжно-Российский государственный политехнический университет (НПИ) имени М.И. Платова, НовочеркасскРоссияFederal State Budget Educational Institution of Higher Education "Platov South-Russian State Polytechnic University (NPI), NovocherkasskRussian Federation2025130820252541118Copyright © LLC "KALVIS", 20252025LLC "KALVIS"LLC "KALVIS"https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNoticehttps://www.catalysis-kalvis.ru/jour/article/view/1182

В работе исследовано влияние содержания СО2 в синтез-газе на процесс совмещенного синтеза и гидропреобразования углеводородов на бифункциональном Сo/SiO2+ZSM-5+Al2O3-катализаторе. Исследования выполнены в диапазоне изменения содержания СО2 от 0 до 60 об.% при температурах 240 и 250 °С, давлении 2,0 МПа и ОСГ 1000 ч–1. Показано, что на бифункциональном кобальтовом катализаторе возможна частичная переработка СО2 в синтетические углеводороды. Переработка углекислого газа, добавляемого в синтез-газ, происходит в интервале концентраций СО2 20–40 об.%. Максимальная конверсия СО2 составила 5,3 % при 240 °С и 20 об.% СО2 в газе. В результате добавки СО2 в синтез-газ в продуктах синтеза Фишера–Тропша возрастает количество углеводородов разветвленного строения. Такие углеводороды способствуют улучшению детонационной стойкости бензина и низкотемпературных свойств дизельной фракции (температуры помутнения, предельной температуры фильтруемости).

The paper studies the effect of CO2 content in synthesis gas on the process of combined synthesis and hydroconversion of hydrocarbons on a bifunctional Сo/SiO2+ZSM-5+Al2O3 catalyst. The studies were performed in the range of CO2 content from 0 to 60 vol. % at temperatures of 240 and 250 °C, pressure of 2.0 MPa and GHSV of 1000 h-1. It was shown that partial conversion of CO2 into synthetic hydrocarbons is possible on the bifunctional cobalt catalyst. Processing of carbon dioxide added to synthesis gas occurs in the range of CO2 concentrations of 20-40 vol. %. The maximum degree of CO2 conversion was 5.3 % at 240 °C and 20 vol. % CO2 in gas. It has been established that the addition of CO2 to synthesis gas leads to an increase in selectivity for C5+ hydrocarbons and the amount of isomeric hydrocarbons in the synthesis products, which contribute to the improvement of the characteristics of motor fuel, the octane number of the gasoline fraction and the pour point of the diesel fraction.

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The authors declare that there are no conflicts of interest present.