Carbon Dioxide Hydrogenation under Subcritical and Supercritical Conditions in the Presence of 15% Fe/SiO2 Catalyst Научная публикация
| Журнал |
Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555 |
||||
|---|---|---|---|---|---|
| Вых. Данные | Год: 2018, Том: 10, Номер: 4, Страницы: 288-293 Страниц : 6 DOI: 10.1134/s2070050418040062 | ||||
| Авторы |
|
||||
| Организации |
|
Реферат:
Results are presented from a comparative study of CO2 hydrogenation under gas-phase and supercritical conditions for CO2 in the presence of 15% Fe/SiO2 catalyst. The reaction is studied in the temperature range of 300–500°C at atmospheric pressure under gas-phase conditions and at a pressure of 95 atm under supercritical conditions at an Н2 : СО2 molar ratio of 2 : 1. It is found that the process proceeding under supercritical conditions lowers CO selectivity from 90–95 to 30–50% over the range of temperatures and raises (up to 60%) the hydrocarbon selectivity. In contrast to gas-phase hydrogenation, the formation of alcohols is observed in the reaction under supercritical conditions. Using a combination of thermogravimetry, differential thermogravimetry, and differential thermal analysis (TG–DTG–DTA), it is shown that the process proceeding under supercritical conditions results in a 2.2-fold drop in the amount of carbon-like deposits on the catalyst surface. X-ray diffraction analysis shows that under gas-phase process conditions, graphite-like structures form on the catalyst surface; this effect is not observed under supercritical conditions. The developed catalyst and the process for CO2 hydrogenation can be recommended for the further modification and improvement of the properties of a catalyst based on iron nanoparticles that is much (10–100 times) cheaper than the previously reported CO2 hydrogenation catalysts.
Библиографическая ссылка:
Evdokimenko N.D.
, Kim K.O.
, Kapustin G.I.
, Davshan N.A.
, Kustov A.L.
Carbon Dioxide Hydrogenation under Subcritical and Supercritical Conditions in the Presence of 15% Fe/SiO2 Catalyst
Catalysis in Industry. 2018. V.10. N4. P.288-293. DOI: 10.1134/s2070050418040062 WOS Scopus РИНЦ OpenAlex
Carbon Dioxide Hydrogenation under Subcritical and Supercritical Conditions in the Presence of 15% Fe/SiO2 Catalyst
Catalysis in Industry. 2018. V.10. N4. P.288-293. DOI: 10.1134/s2070050418040062 WOS Scopus РИНЦ OpenAlex
Оригинальная версия:
Евдокименко Н.Д.
, Ким К.О.
, Капустин Г.И.
, Давшан Н.А.
, Кустов А.Л.
Гидрирование СО2 в суб- и сверхкритических условиях на катализаторе 15% Fe/SiO2
Катализ в промышленности. 2018. №4. С.57-63. DOI: 10.18412/1816-0387-2018-4-57-63 РИНЦ CAPlus OpenAlex
Гидрирование СО2 в суб- и сверхкритических условиях на катализаторе 15% Fe/SiO2
Катализ в промышленности. 2018. №4. С.57-63. DOI: 10.18412/1816-0387-2018-4-57-63 РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 23 мар. 2018 г. |
| Опубликована в печати: | 1 окт. 2018 г. |
| Опубликована online: | 14 янв. 2019 г. |
Идентификаторы БД:
| Web of science: | WOS:000455594600004 |
| Scopus: | 2-s2.0-85060142582 |
| РИНЦ: | 38659596 |
| OpenAlex: | W2909188723 |